Meeting Agenda
Monday, September 21, 2026 at 6:00 pm
621 11th Street, Fortuna CA
Regular Meeting Agenda
Zoom Option: 1-669-900-9128 Meeting ID 880 7368 4104 Password 818002 • We May Disagree, But We Will Be Respectful of One Another • All Comments Will Be Directed to the Issue at Hand, and Addressed to the City Council • Personal Attacks are Unacceptable
• The City Council May Take Action on any Item on this Agenda.
CALL TO ORDER / FLAG SALUTE / ROLL CALL
Council
Staff
• Council Member Kyle Conley
• Council Member Carlos Diaz
• Council Member Abe Stevens
• Mayor Pro Tem Tami Trent
• Mayor Mike Johnson
• City Manager Amy Nilsen
• City Clerk Siana L. Emmons
1. PRESENTATIONS / PROCLAMATIONS
a. Proclamation: National Program of All-Inclusive Care for the Elderly
2. ORAL COMMENTS FROM THE PUBLIC
Members of the Public may be heard at this time on any item within the subject matter jurisdiction of the City that is not on the Public Meeting Agenda. It is the practice of this Council to hold public
3. comment for every item of business on the agenda at the time that item is heard. If a speaker cannot stay for a particular item of business, they may be heard during this time. Comments concerning the Consent Calendar may also be heard at this time. Speakers addressing the Council will be limited to 3 minutes per speaker. Be advised that, by law, the City Council can only deliberate or take action on items that are included on the agenda.
CONSENT CALENDAR
These matters are routine in nature and are usually approved by a single vote. Any member of the Council may pull a particular item for further discussion.
City Council Minutes – September 8, 2026 (Regular Meeting) & September 8, 2026 (Special Meeting)
a.
b. Administrative Monthly Report
c. Community Development Monthly Report
d. Finance Monthly Report
e. Parks & Recreation Monthly Report
f. Police Monthly Report
g. Public Works Monthly Report
h. Report of Disbursements
i. Approve the Investment Policy for Fiscal Year 2026-27, Resolution 2026-31 Authorization of Destruction of Selected Finance Department Files, Resolution 2026-32
j.
Consider Revisions to the Organizational Chart and Full-Time Pay Rate Schedule for the Community Development/Public Works Department k.
Authorization of Destruction of Selected River Lodge Files, Resolution 2026-33
l.
4. CITY COUNCIL BUSINESS
Second Reading and Adoption of Ordinance 2026-788, Adding Chapter 5.30 to the Fortuna Municipal Code Regulating Massage Establishments a.
Approval of Amendments No. 5 and No. 6 to the Engineering Services Agreement with Jacobs for the Wastewater Treatment Plant NPDES Compliance Project
b.
5. 6. CITY MANAGER’S REPORT
FUTURE AGENDA ITEMS
At this time, members of the Council may consider or request items to be placed on a future agenda through a consensus of the majority.
7. CITY COUNCIL REPORTS AND COMMENTS
Council Member Kyle Conley
Redwood Region Economic Development Corporation (RREDC) Alternate, Parks & Recreation Commission, Humboldt Transit Authority Alternate a.
Council Member Carlos Diaz
Redwood Region Economic Development Corporation (RREDC), Redwood Coast Energy Authority (RCEA), Parks & Recreation Commission Alternate b.
8. Contact: Siana L. Emmons, City Clerk ([email protected] 707-725-1409) | Agenda published on 09/17/ 2026 at 1:56 PM
Council Member Abe Stevens
Humboldt County Association of Government Alternate, Redwood Region Economic Development Corporation
c.
Mayor Pro Tem Tami Trent
Humboldt Transit Authority (HTA), Indian Gaming Commission, League of California Cities Public Safety Commission, Fortuna Business Improvement District (FBID), Humboldt Local Agency Formation Commission (LAFCo)
d.
Mayor Mike Johnson
Humboldt County Association of Governments (HCAOG), Historical Commission, League of California Cities Transportation, Communication, & Public Works Commission e.
ADJOURN
Pursuant to Government Code Section 54957.5, any non-confidential documents or writings that the City distributes, less than 72 hours before a regular meeting, to all or a majority of the legislative body's members must be made available to members of the public at the same time as the distribution. Documents and information related to the agenda topics are available for review at City Hall, 621 11th Street, between the hours of 8:00 AM to 5:00 PM. Members of the public are invited to come to the meeting and comment. In compliance with the Americans with Disabilities Act, if you need special assistance to participate in this meeting, please contact the City Clerk at (707) 725-7600. Notification prior to the meeting will enable the City to make reasonable arrangements to ensure accessibility to this meeting.
9. In Recognition of
National PACE Month
September 2026
WHEREAS, the elderly population in Humboldt County is growing rapidly, with a significant impact on healthcare needs and costs; and
WHEREAS, the Program of All-Inclusive Care for the Elderly (PACE) is a fully integrated, comprehensive model of care that allows older adults who qualify for a nursing home level of care to continue living safely and independently in their homes and communities; and
WHEREAS, participants enrolled in PACE receive all Medicare- and Medi-Cal-covered services, along with additional support such as rehabilitation, transportation, nutrition, social engagement, and family caregiver assistance that promote overall health and well-being; and WHEREAS, PACE programs assume full financial responsibility for participants’ medical care and related services — including hospitalization and long-term care — through capitated payments from Medicare and Medi-Cal, thereby helping to control costs for the state while improving quality of care; and WHEREAS, Redwood Coast PACE, a program of the Humboldt Senior Resource Center, has served more than 750 older adults in Humboldt County with over 400 older adults currently enrolled with centers located in Fortuna, Eureka and Arcata, providing a trusted local resource for families and seniors alike; and WHEREAS, Redwood Coast PACE celebrates its 12th anniversary of serving the Humboldt community, WHEREAS, the PACE model of care has consistently demonstrated improved health outcomes, greater participant satisfaction, and enhanced quality of life for older adults, while supporting families and strengthening communities;
NOW THEREFORE, I Mayor Mike Johnson, on behalf of the City Council of the City of Fortuna, do hereby proclaim September 2026 as National PACE Month in the City of Fortuna, and encourage all citizens to recognize the importance of Redwood Coast PACE, a program of the Humboldt Senior Resource Center in ensuring dignity, independence, and quality care for our community’s seniors.
SIGNED this 21st day of September 2026, at the City of Fortuna, in the State of California, and in witness thereof, the seal of Fortuna.
Mike Johnson,
Mayor, City of Fortuna
Meeting Agenda
Minutes
Tuesday, September 8, 2026 at 6:00 pm
621 11th Street, Fortuna CA
Regular Meeting Agenda
Zoom Option: 1-669-900-9128 Meeting ID 837 7709 4892 Password 531673 • We May Disagree, But We Will Be Respectful of One Another • All Comments Will Be Directed to the Issue at Hand, and Addressed to the City Council • Personal Attacks are Unacceptable
• The City Council May Take Action on any Item on this Agenda.
CALL TO ORDER / FLAG SALUTE / ROLL CALL
Minutes:
Mayor Johnson called the meeting to order at 6:00 pm and led the flag salute. ROLL CALL: Council Member Conley - Absent, Council Member Diaz - Present, Council Member Stevens - Present, Mayor Pro Tem Trent - Present, Mayor Johnson - Present Mayor Johnson reported out there was nothing to report from the 5pm Special meeting Closed Session.
1. PRESENTATIONS / PROCLAMATIONS
Constitution Week 2026 Proclamation
Minutes:
Mayor Johnson presented the Constitution Week Proclamation to Catherine Culver from the Eel Valley Chapter of the National Society Daughters of the American Revolution (NSDAR).
a.
Presentation by Vero Fiber
Minutes:
Presentation was presented by Candace Kaiser, Director of Fiber Built Programs and Joe Wicelinski, OSP Project Manager.
b.
2. 3. ORAL COMMENTS FROM THE PUBLIC
Minutes:
Virginia Howard Mullen, Matt Rogers There being no additional public comments, Mayor Johnson closed the public comment section.
CONSENT CALENDAR
Minutes:
PUBLIC COMMENT: There being no public comments, Mayor Johnson closed the public comment section. CITY COUNCIL ACTION: Mayor Pro Tem Trent moved, seconded by Council Member Diaz, to approve the consent calendar. Voice vote.
AYES: Council Members Diaz, Stevens, Mayor Pro Tem Trent, Mayor Johnson NOES:
None ABSTAIN: None ABSENT: Council Member Conley MOTION CARRIED: 4/0 a. City Council Minutes – August 17, 2026 (Regular Meeting) b. Report of Disbursements
c. Parks Commission Bylaws Amendment
4. CITY COUNCIL BUSINESS
Introduction and First Reading of Ordinance 2026-788, Adding Chapter 5.30 to the Fortuna Municipal Code Regulating Massage Establishments Minutes:
Interim Chief of Police Matt Eberhardt provided a staff on the adding Chapter
5.30 to the Fortuna Municipal Code regulating massage establishments.
PUBLIC COMMENT: There being no public comments, Mayor Johnson closed the public comment section. CITY COUNCIL ACTION: Council Member Diaz moved, seconded by Mayor Pro Tem Trent, to introduce and conduct a first reading of Ordinance 2026-788, an Ordinance of the City Council of the City of Fortuna Adding Chapter 5.30 to Article 5 of the Fortuna Municipal Code Regulating Massage Establishments and continue the public hearing to October 5, 2026, for the second reading and adoption. Roll Call vote. AYES: Council Members Diaz, Mayor Pro Tem Trent, Mayor Johnson NOES: Council Member Stevens ABSTAIN: None ABSENT: Council Members Conley MOTION CARRIED: 3/1
a.
Authorization to Submit a Proposal to Establish a NorCal SBDC Neighborhood Branch Serving Fortuna and the Greater Eel River Valley Minutes:
Senior Planner Katey Schmidt provided a staff report on submitting a proposal to establish a NorCal Small Business Development Center (SBDC) neighborhood branch. PUBLIC COMMENT: There being no public comments, Mayor Johnson closed the public comment section. CITY COUNCIL ACTION:
Council Member Diaz moved, seconded by Mayor Pro Tem Trent, to authorize staff to submit a proposal to the Northern California Small Business Development Center seeking designation of the City of Fortuna as a Neighborhood Branch host organization serving Fortuna and the greater Eel River Valley. Roll Call vote. AYES: Council Members Diaz, Stevens, Mayor Pro Tem Trent, Mayor Johnson NOES: None ABSTAIN: None ABSENT: Council Members Conley MOTION CARRIED: 4/0
b.
5. Contact: Siana L. Emmons, City Clerk ([email protected] 707-725-1409) Hiring Freeze Exception – Finance Office Supervisor
Minutes:
Finance Director Aaron Felmlee provided a staff report on a hiring freeze exemption for the Finance Office Supervisor position. PUBLIC COMMENT:
Catherine Culver, Matt Eberhardt. There being no additional public comments, Mayor Johnson closed the public comment section. CITY COUNCIL ACTION:
Mayor Pro Tem Trent moved, seconded by Council Member Diaz, to approve an exception to the hiring freeze for the Finance Office Supervisor position and, if necessary, to fill a resulting Finance vacancy provided an internal Finance staff member is promoted. Roll Call vote. AYES: Council Members Diaz, Stevens, Mayor Pro Tem Trent, Mayor Johnson NOES: None ABSTAIN: None ABSENT: Council Members Conley MOTION CARRIED: 4/0
c.
CITY MANAGER’S REPORT
Minutes:
Acting City Manager Aaron Felmlee provided a verbal report.
6. FUTURE AGENDA ITEMS
Minutes:
None.
7. CITY COUNCIL REPORTS AND COMMENTS
a. Council Member Kyle Conley
b. Council Member Carlos Diaz
c. Council Member Abe Stevens
d. Mayor Pro Tem Tami Trent
e. Mayor Mike Johnson
8. ADJOURN
Minutes:
Mayor Pro Tem Trent moved, seconded by Council Member Diaz to adjourn the meeting at 6:51 pm. MOTION CARRIED: 4/0
9. Special Meeting Agenda
Minutes
Tuesday, September 8, 2026 at 5:00 pm
621 11th Street, Fortuna CA
Zoom Option: 1-669-900-9128 Meeting ID 893 5569 5002 Password 840494 • We May Disagree, But We Will Be Respectful of One Another • All Comments Will Be Directed to the Issue at Hand, and Addressed to the City Council • Personal Attacks are Unacceptable
• The City Council May Take Action on any Item on this Agenda.
CALL TO ORDER / FLAG SALUTE / ROLL CALL
Minutes:
Mayor Johnson called the meeting to order at 5:00 pm and led the flag salute. ROLL CALL: Council Member Conley - Absent, Council Member Diaz - Present, Council Member Stevens - Present, Mayor Pro Tem Trent - Present, Mayor Johnson - Present
1. ORAL COMMENTS FROM THE PUBLIC
Minutes:
PUBLIC COMMENT: There being no public comments, Mayor Johnson closed the public comment section.
2. ADJOURN TO CLOSED SESSION
Minutes:
CITY COUNCIL ACTION: Mayor Pro Tem Trent moved, seconded by Council Member Diaz to adjourn to Closed Session. MOTION CARRIED 4/0
CONFERENCE WITH LABOR NEGOTIATORS Agency designated
representatives: Amy Nilsen, City Manager Employee organization: Fortuna Employee Association and Fortuna Unrepresented pursuant to Section 54957.6 of the Government Code
a.
CONFERENCE WITH LABOR NEGOTIATORS Agency designated
representatives: Amy Nilsen, City Manager Employee organization: Fortuna Police Employees Association, pursuant to Section 54957.6 of the b.
3. Contact: Siana L. Emmons ([email protected] 7077251409) Government Code
CONFERENCE WITH LABOR NEGOTIATORS Agency designated
representatives: Amy Nilsen, City Manager Employee organization: Fortuna Unrepresented pursuant to Section 54957.6 of the Government Code c.
REPORT OUT AND ADJOURN
Minutes:
CITY COUNCIL ACTION: There was no action to report out. Mayor Pro Tem Trent moved, seconded by Council Member Diaz to adjourn the Special meeting at 5:24 p.m.
MOTION CARRIED 4/0
4. Consent Agenda Item 4b
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and Council Members
FROM: Siana L. Emmons, Human Resources Director/City Clerk THROUGH: Amy Nilsen, City Manager
SUBJECT: Administrative Monthly Report for August 2026
STAFF RECOMMENDATION:
Receive report as an informational item.
EXECUTIVE SUMMARY:
The Administration Department monthly report encompasses the following divisions: City Attorney, City Clerk, Risk Management/Human Resources and Information Technology.
CITY ATTORNEY
The City Attorney billing was 3 hours for the month of August. Project support for these months included public records request review, ordinance review, contract review, personnel inquiries, and various email and telephone calls.
CITY CLERK DIVISION
For the month of August, the Clerk’s Office prepared and published two agendas for Regular City Council Meetings, one agenda for Special City Council Meeting, one agenda for Fortuna Business Improvement District Advisory Committee Meeting, and one Cancellation Notice for RCRPD Board meeting.
City Council Meetings
Council Meeting Date Agenda Items
August 17, 2026 – Regular Meeting 14
September 8, 2026 – Special Meeting 3
September 8, 2026 – Regular Meeting 8
Totals 25
City Clerk’s Office Key Duties August
Public Records Act Requests 11
General Information Requests 25 – 30 per day, average
Ordinances 1
Resolutions 1
Minutes Prepared 3
Notary Services Provided 2
Claims for Damages Filed 0
FPPC Filings: 5
Consent Agenda Item 4b
Legal/Proof of Publications 4
Notices Posted (Public Hearing, Agenda, Ordinance, etc.) 9 In the September 1, 2026, publication of Western City Magazine, Carolyn Steffan, the City Clerk in Tehama, was honored for her contribution of six decades to her agency. Carolyn is an active Board Member for California Intergovernmental Risk Authority (CIRA) and today is the longest serving City Clerk in State History. Steffan’s success has come from her opinion that city staff and council members should “Be available to people, listen to their concerns, and try to make them feel like their opinions are valued. I stress that with my council, so that if somebody contacts them, they take [the concern] seriously, even though it may not be serious to them.” Steffan has also maintained a good working relationship with the city [Tehama]. “I’ve always said, if I have a council that doesn’t listen to me and take my direction, I’m gone. But that’s never happened. They don’t get paid. They’re here because they love the city, and they want it to stay the way it is.” What an amazing accomplishment for Carolyn Steffan! The City Clerk’s office maintains the official records of the City, including the minutes of the City Council meetings and documents pertaining to Public Records Act (PRA) requests. For more information, or to access city documents, you can visit the City of Fortuna’s website at www.friendlyfortuna.com or contact the City Clerk at [email protected].
RISK MANAGEMENT / HUMAN RESOURCES DIVISION
Risk Management
The City received one (1) new Worker’s Compensation claim as of July 21, 2026, and one new tort claim. City staff continue to work closely with LWP for Worker’s Compensation and George Hills, the City’s third-party claims administrator, to bring claims to settlement or closure.
Date of Claim Type of Claim Status
08/10/2026 Tort Claim Closed
On August 20, 2026, Risk staff attended a California Intergovernmental Risk Authority (CIRA) Executive Committee (EC) meeting in Eureka. Agenda topics included review and approval of Supplemental Actuarial Reports for the 2025/26 Program Year, review and approval of the Employment Risk Management Authority (ERMA) excess allocation methodology, discussion of Strategic Planning Initiatives, California Intergovernmental Risk Authority Captive (CIRAC) implementation update and approval of Administrative Services Agreement, review and approval of CIRA accounting position, approval of Amendments to the CIRA Bylaws, prospective new members to the cities of Fullerton and Lynwood, CIRA program renewals and closed session items. The City of Eureka graciously hosted the EC attendees and provided a tour and welcome reception at the Ingomar Club on August 19th, and following the meeting a lunch and tour of the Sequoia Park Zoo Skywalk.
Human Resources
Human Resources staff continue to administer recruitments for non-general fund full-time positions, police officer and sergeant and part-time recreation positions, as needed.
Current Recruitments:
Department Requisition Recruitment Status Notes
Consent Agenda Item 4b
Community
Development
202600014 Special Projects ManagerEngineeringClosed No interviews scheduled.
Community
Development
202600015 Deputy City Engineer Closed No interviews
scheduled.
Parks & Rec 202600016 Administrative Assistant
II
Open Candidate in preemployment.
Police 202600013 Police Officer (Lateral) Closed On hold.
Police 202600008 Dispatcher I Filled Candidate in preemployment.
The City is always looking to recruit qualified staff for open positions. For more information about employment with the City of Fortuna, visit the City’s website www.friendlyfortuna.com, send email to the City Clerk at [email protected], or call 707-725-7600. We also encourage all interested applicants to create a user account on www.governmentjobs.com
INFORMATION TECHNOLOGY DIVISION
City Website (www.friendlyfortuna.com)
If any members of the public are interested in the latest City news or City alerts, please visit the City of Fortuna website www.friendlyfortuna.com
Computer/Network
Staff continue to obtain quotes from qualified firms to replace the obsolete phone system currently being used by the City. The City’s technical infrastructure and network is complex and will require a unique skill set and knowledge for a successful transition. Currently there are four potential firms working on providing quotes. As an update, support staff anticipate all quotes will be received by the end of September.
City staff continue to work collaboratively with Nylex to meet the City’s ongoing technical needs.
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Committed Service: Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 2: Our People – Staff Retention, Pay & Succession RECOMMENDED COUNCIL ACTION:
Motion to Receive Administrative Monthly Report. Consent Agenda vote.
Consent Agenda Item 4c
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and Council Members
FROM: Brendan Byrd, Community Development Director/City Engineer THROUGH: Amy Nilsen, City Manager
SUBJECT: Community Development Department Monthly Report for August 2026 STAFF RECOMMENDATION:
Receive report as an informational item.
EXECUTIVE SUMMARY:
Planning Division Activity:
• The Planning Division processed 9 business licenses in August. • The City is currently recruiting members for the General Plan Technical Advisory Group.
Fortuna residents and individuals who work in the community are encouraged to participate in shaping the City’s General Plan, a long-range policy document that will guide growth, development, and community priorities over the next 30 years. • Community Development staff are working with local Mobile Home Parks to implement the Mobile Home Rent Stabilization Ordinance and establish Maximum Allowable Rents. • City Council approved the award and Professional Service Agreement for the On-Call Administrative Hearing Officer to preside over public hearings related to the Mobile Home Rent Stabilization Ordinance and other applicable administrative hearings resulting from violations of the municipal code on August 17, 2026.
• Planning staff continue to attend Technical Assistance workshops presented by the California Department of Housing and Community Development to receive guidance on Cycle 7 Housing Element development and requirements.
• Community Development, Public Works, and Fortuna Fire staff participated in four preapplication meetings in August, consulting with local property owners, developers, and potential businesses regarding housing and new business ventures within the city. • Planning staff submitted a Letter of Interest to the NorCal Small Business Development Center (SBDC) to express the City's intent to submit a proposal in response to SBDC's Request for Proposals to host an SBDC Neighborhood Branch at City Hall, providing business advising services to local small businesses. Proposals are due September 18, 2026. • Planning staff presented to the Rohner Community Recreation and Parks District on August 5, requesting supplemental funding to support awarded grant funds and to cover incidental expenses and federally required expenses necessary to complete the acquisition of parkland at the Lower Eel River Riverwalk area and the Vancil Forest area.
Consent Agenda Item 4c
Planning Commission Activity:
• The August 11th, and August 25th Planning Commission meetings were cancelled.
Active Planning Projects:
Proposed Project Project Description Location
Minor Subdivision
A minor subdivision of an existing developed
parcel dividing the property into four individual
parcels and one remainder parcel
701 S. Fortuna Blvd
Subdivision- Major
Subdivision of one parcel into six multi-family
residential parcels to allow for 28 total
condominium units.
1569 Newburg Road
Lot Line Adjustment Lot line adjustment between two commercial parcels. Mill Site Area
Subdivision-Major Phase 2 of the Twin Creeks subdivision to create 21 residential parcels. Redwood Way
Subdivision-Major Completion of the final phases of the Gulliksen subdivision to create 35 residential parcels. Gulliksen Avenue Subdivision-Minor Minor subdivision of one parcel into three residential parcels. Berry Creek Avenue
Subdivision-Minor Minor subdivision of one parcel into three residential parcels. Berry Creek Avenue
Subdivision-Minor Minor subdivision of one parcel into two residential parcels.
1125 Angel Heights
Drive
Subdivision-Minor Subdivision of one parcel into three residential parcels. 3495 Rohnerville Road
Engineering Division Activity:
• Staff have been coordinating with Sequoia Construction on the minor remodel project at City Hall, which will convert the former Building Counter area into a second public counter and workspace. Work is anticipated to begin in the fall. • Division Staff have been working with the Community Development Department to finalize a number of larger building permits, including a new contractors yard at 359 Main Street, and the Newburg Glen Apartments.
• Staff have contracted with GHD for the Water System Master Plan and have been working with Public Works to fulfil a comprehensive data request for the update to the City’s water system hydraulic model.
• The Engineering Division has continued to upgrade controllers at traffic signals throughout the City and has been collecting vehicle speed data for the City’s 2026 Speed Survey update.
• Staff have been researching and evaluating a number of grant opportunities for the fall, including CDFW and WCB grants for the Mill Creek Habitat Connectivity Project and a Highway Safety Improvement Program Grant for Improvements to Rohnerville Road.
Consent Agenda Item 4c
Grant Funding Updates:
• Community Development Block Grant 2025 NOFA Planning Activity: General Plan Update; Application for $279,307
Status: Application is under review by California Department of Housing and Community Development staff.
• Community Development Block Grant Program Income (PI); PI on hand~$970,000 Status: A Community Meeting is scheduled for September 24, 2026, to discuss potential uses of program income funds. A Public Hearing is scheduled for October 5, 2026, to approve selected activities and authorize submission of a Program Income Application. • Northcoast Resource Partnership Technical Assistance; Awarded $10,000 Status: Awarded technical assistance grant to provide consultant assistance to develop a comprehensive Community Forest Plan as a guiding document to manage, protect, and sustainably use City-owned forests. Staff are working with the technical advisor on the scope of the plan. Opportunities for community input will follow. • California Department of Housing and Community Development Permanent Local Housing Allocation (PLHA) 2026 NOFA; NEW FUNDS ALLOCATED: $136,762 for CY 202425
Status: The City is reviewing potential uses of allocated funds. Staff will bring the selected activity to Council prior to application.
• Rohner Community Recreation and Park District; Funding Request: $16,000 Status: Approval of $13,500 in funding for the Vancil Acquisition to cover the Lot Line Adjustment, State Historic Preservation Office requirements, including a Cultural Survey, and Yellow Book appraisal; Appraisal; $12,500 for the Lower Eel River Acquisition to cover the Lot Line Adjustment and County LLA application fees. • Habitat Conservation Fund Vancil Forest Acquisition; Awarded $175,750 Acquisition of a 6.25-acre forest adjacent to Rohner Park for community forest expansion, trails, and recreation areas.
Status: Staff seeking compatible grants to fulfill 50% match requirement. • Land and Water Conservation Fund Vancil Forest Acquisition; Awarded $144,500 Partial match funds for Vancil Forest Acquisition.
Status: City Staff to work with State Parks staff to complete Federal requirements. Staff are seeking final funds for closing and incidental costs. • California Natural Resources Agency California River Parkway Grant; Awarded $620,194
California State Coastal Conservancy; Awarded $250,000
National Coastal Wetlands Conservation Grants Program; Awarded $972,250 Lower Eel River Wetlands Acquisition Project. In partnership with the Wiyot Tribe, acquisition of approximately 250-acres to be utilized as a recreation area and preservation of open space. The city will assume ownership of 7.2 acres along Riverwalk Drive to develop a public park and access to the Eel River. The Wiyot Tribe will assume ownership of the remainder for habitat restoration, preservation of open space, and cultural activities.
Consent Agenda Item 4c
Status: City Council has approved the purchase agreement with the property owners, and signatures have been obtained. Staff are seeking incidental funding for a lot line adjustment to separate the City and tribal portions of the parcel.
Building Division Activities:
• The Building Division issued 36 permits in August 2026; permit detail summaries are attached.
RECOMMENDED COUNCIL ACTION:
Receive Community Development Department Monthly Report. Consent Agenda vote.
Consent Agenda Item 4c
Consent Agenda Item 4d
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council
FROM: Aaron Felmlee, Finance Director
SUBJECT: Finance Department Monthly Report
STAFF RECOMMENDATION:
Receive report as an informational item.
EXECUTIVE SUMMARY:
Sales Tax Revenue:
The City received sales tax revenue reports from its sales tax consultant, HdL, for the period of January through March 2026. Sales tax revenue increased 0.5% compared to the same period in 2025. For comparison, statewide sales tax revenue increased 4.0% during the same period. Fortuna and Humboldt County are therefore underperforming the statewide trend, which may indicate that local economic conditions are weaker than the broader state economy. Additional information regarding first-quarter 2026 sales tax performance is provided in the Newsletter attached to this staff report.
Sales tax revenue for the City came in approximately $5,000 below the budgeted amount of $2,168,500 for FY 2025-26. This represents an approximate 1% increase over the prior fiscal year’s revenue. However, total sales tax revenue remains approximately $150,000 below the amount received in FY 2021-22.
Looking ahead, the City budgeted conservatively for FY 2026-27, incorporating anticipated macroeconomic conditions into the budgeted sales tax revenue of $2,163,000. Based on current revenue performance and the conservative approach used in developing the FY 2026-27 budget, no immediate action is necessary.
Fiscal Year 2024-25 Financial Statement Audit:
July 1 signaled the start of a new fiscal year for the City. As such, staff are working on closing the previous fiscal year and preparing for the City’s annual financial statement audit. The Cities auditor will be Michael O’Connor from O’Connor and Company who also performed last year’s audit for the City. Michael and his staff are planning to come on site for a week to conduct interim audit work during the month of October.
Finance staff will be preparing for this interim audit work by preparing the necessary reconciliations, reports, adjustments and backup information that is required during the audit process. Having these documents ready prior to the auditors’ arrival has provided for a smooth audit process in past years.
Consent Agenda Item 4d
Measure E Update:
The Measure E committee’s next regularly scheduled meeting is set for October 14, 2026, at 5:30pm. The primary purpose of this meeting will be for Staff to review with the Committee the list of Measure E funded projects that were included in the Council Adopted Budget for fiscal year 2026-27.
List of Measure E items funded this month:
• (2) Police Detective Positions
• Police Community Services Officer Position
• Police Records Clerk Position
• Parks and Recreation Director Position
• Recreation Program Supervisor Position
• Transit Trips to Eureka for Seniors
• K-9 Program
• Encampment Outreach and Cleanup Services
• Storm Drain Maintenance Projects
• Street Maintenance Projects
An activity log displaying important Finance data is attached for informational purposes.
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Community Connection & Care: Close-knit feel, big community events, volunteering, showing up for each other.
Economic Resilience The status quo is not sustainable. Generating City revenue is essential to keeping City services and investing in what Fortuna residents want.
Committed Service Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health Priority 3: Fiscal Foundation — Revenue, Cost Accounting & Honest Commitments Priority 4: Economic Development to Build Fortuna's Future Priority 8: Youth, Recreation & Community Life
FISCAL IMPACT:
None.
RECOMMENDED COUNCIL ACTION:
Motion to receive Finance department monthly report. Consent Agenda vote.
ATTACHMENTS:
• Finance Staff Activity Log for August 2026
• Sales Tax Newsletter January – March 2026
City of Fortuna
Finance Department
Fiscal Year 2026/27
Finance Department March April May June July August
Activity Log 2026 2026 2026 2026 2026 2026
Payroll Checks Issued: 212 219 209 289 416 227
Accounts Payable Checks Issued: 201 239 216 204 269 205 Number of Invoices Processed: 409 454 405 406 517 401
CDBG Loan Payments/Payoff: 0 0 0 0 0 0
Number of Telephone Calls: 1089 1003 1045 1020 1173 1044 Avg Daily 61 56 70 57 65 61
Daily Walk-in Customers
Utility 484 532 463 673 610 580
Other 126 114 91 126 200 109
Total: 610 646 554 799 810 689
Average Daily Walk-in Customers 34 36 37 44 45 41
Monthly Bills 4606 4607 4617 4615 4616 4599
Reminder Notices 464 396 430 395 408 455
Shut Off Notices Mailed 292 257 278 240 262 291
Shut Offs 13 23 13 14 14 14
Ebills - Bills sent via email 1914 1929 1900 2001 1984 1981 Utility Bills paid online 1954 1954 2047 1985 2056 2017 % of Utility bills paid in person 11% 12% 10% 15% 13% 13% Public Works Calls Dispatched: 119 113 106 98 108 104
Avg Service Calls 108.0
Utility Billing Aging Report Total Bal Current 30 Days 60 Days 90 Days $ 1,118,881 $ 909,678 $ 128,996 $ 31,734 $ 48,473
81.3% 11.5% 2.8% 4.3%
81%
12% 3% 4%
Utility Accounts Aging
Current
30 Days
60 Days
90 Days
www.hdlcompanies.com | 888.861.0220
Q1 2025*
Q1 2026*
Legend
$0
$20,000
$40,000
$60,000
$80,000
$100,000
$120,000
SALES TAX BY MAJOR BUSINESS GROUP *Allocation aberrations have been adjusted to reflect sales activity County
and State
Pools
Fuel and
Service
Stations
Restaurants
and
Hotels
Business
and
Industry
Autos
and
Transportation
Building
and
Construction
General
Consumer
Goods
Food
and
Drugs
CITY OF FORTUNA HIGHLIGHTS TOP 25 PRODUCERS
Published by HdL Companies in Summer 2026
Ace Hardware & Garden
Chevron
Cigarette Payless
Dollar General
Dollar Tree
Eel River Brewing
Forbusco Lumber
Fortuna Liquors
Grocery Outlet
Hummel Tire & Wheel
Les Schwab Tire Center
McDonald’s
Mercer Fraser
O’Reilly Auto Parts
Pepper’s Restaurant
Peterson Cat
Power Market
Ray’s Quality Cars
Renner Petroleum
Safeway
Sport & Cycle
Sunbelt Rentals
Tractor Supply
Walgreens
Wyckoff Plumbing
SALES TAX UPDATE
CITY OF FORTUNA
1Q 2026 (JANUARY - MARCH)
Fortuna’s gross receipts from January
through March 2026 were essentially
2.6% lower compared to the first sales
period in 2025. However, after adjusting
for reporting modifications from audit
corrections and delayed payments,
actual sales landed essentially even at
0.5%.
The City’s allocation from the
countywide use tax pool ticked up 2.8%,
aided by a new ecommerce distribution
and several one-time taxpayer payments
to the Humboldt pool.
Fuel-service stations returns improved
1.6% as the price of fuel began climbing
toward the end of the quarter. Increased
casual dining receipts helped offset
lower quick-service returns – netting a
positive outcome for restaurants-hotels.
Transportation related spending ended
relatively even with auto repair shop
gains overcoming a slight dip in auto
supply sales. General retail outcomes
were also flat, with second-hand store
shopping help lift the results. While
contractor activity slowed a bit, buildingconstruction revenues grew slightly.
Conversely, business-industry dipped
2.4% and lower grocery store revenues
contributed to a 4.8% decline in fooddrugs.
Voter-approved Measure E posted
slightly lower results, with ecommerce
boosting general retail and fuel-service
stations experiencing the largest decline.
Net of adjustments, taxable sales for all
of Humboldt County declined 1.1% over
the comparable time period; the Far
North region was up 1.4%.
TOTAL:
-1.1%
$428,514
Measure E
TOTAL: $ 477,348
0.5% -1.1% 4.0%
COUNTY STATE
FORTUNA
1Q2026
TOP NON-CONFIDENTIAL BUSINESS TYPES
Q1 '26
Fortuna
Business Type Change Change Change
County HdL State
Service Stations 57,358 0.6% -5.0% 1.0%
Casual Dining 34,510 1.7% -0.7% 4.0%
Grocery Stores 27,087 -2.5% -3.7% -1.0%
Automotive Supply Stores 26,667 -0.4% 4.0% 1.5%
Quick-Service Restaurants 22,970 -1.4% 0.4% 1.9%
Contractors 17,266 -0.5% -6.7% 4.3%
Auto Repair Shops 13,781 2.6% -4.6% -2.3%
Electronics/Appliance Stores 11,151 -0.8% -21.0% -1.4%
Second-Hand Stores 4,674 30.5% 4.6% -3.7%
Government/Social Org. 444 42.9% 7.3% -25.0%
*Allocation aberrations have been adjusted to reflect sales activity
REVENUE BY BUSINESS GROUP
Fortuna This Quarter*
23%
Pools
13%
Restaurants
10%
Autos/Trans.
10%
Building
11%
Bus./Ind.
9%
Cons.Goods
9%
Food/Drug
14%
Fuel
*ADJUSTED FOR
ECONOMIC DATA
1Q 2026 CITY OF FORTUNA SALES TAX UPDATE
STATEWIDE RESULTS
California’s local one cent sales and use
tax receipts posted moderate growth
during the first quarter, reflecting resilient
consumer behavior despite persistent
economic headwinds. For the months
of January through March, revenues
increased 4% from the year ago quarter
after adjusting for accounting anomalies.
Strong consumer spending patterns did
not falter and was the main reason of
growth, partially enhanced by larger-thanexpected income tax refunds. Both online retailers and brick and mortar merchants
experienced dynamic changes over
last year that far exceed expectations.
E-commerce remains the platform of
choice providing convenience, broad
product availability, and flexible payment
options – benefitting the business-industry
sector and allocations via the countywide
use tax pool. Family apparel and discount
department stores both boosted general
consumer goods the most, with a slight
bump in gas prices further pushing returns
from multiple vendors.
Patronage at restaurants resulted in a
4.2% year over year jump. With demand
constrained due to increasing pricesensitivity and slower foot traffic, gains by all types of eateries signaled underlying
resolve to dine out. Temporary events
further contributed to the positive
outcome – Southern California wildfires
hindered 2025 and the Super Bowl lifting
2026.
The first quarter also included the initial
impacts of elevated tensions in the
Middle East which drove West Texas
Intermediate crude oil prices above $95
per barrel. This had an immediate impact
on local gas prices resulting in a modest
bump to receipts from gas stations and
created large amounts of uncertainty. At
the time of writing, the conflict appears to
have subsided with the Strait of Hurmuz
reopened reducing the possibility of future
strain.
Autos-transportation posted a nominal
gain in first quarter 2026, as higher average
transaction prices offset weaker unit sales.
These price increases reflected tariff
impacts reaching consumers after months
of absorption by automakers, along with
rising material costs. As in the prior quarter,
the transition to the new DMV payment
system for used vehicle dealers under AB
85 modestly reduced cash receipts, with
adjustments still pending.
Overall, the short-term outlook remains
cautiously optimistic. Normal consumer
spending combined with multiple host sites
of World Cup matches and corresponding
tourism should sustain growth, albeit
varied regionally. The Middle East conflict
temporarily resulted in $6 per gallon
average peak pricing during the start of the
summer months. The forecast is coupled
with a national inflation rate that anticipates
an upward trend leaving little room for the
Federal Reserve to alter interest rates in a
favorable way for consumers, potentially
slowing down the retail economy.
Consent Agenda Item 4e
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and Council Members
FROM: Kaylyn Stainbrook, Parks and Recreation Director
SUBJECT: Parks and Recreation Department Monthly Report for August 2026 STAFF RECOMMENDATION:
Receive report as an informational item.
EXECUTIVE SUMMARY:
Parks Maintenance
▪ Deferred Maintenance Items:
o Red rock berm maintenance at Berti and Rohner Fields
o Forest Management
o Pavilion foundation
o Pavilion bar sheet rock repairs and re-paint
o Pavilion Interior/Exterior Paint
o Monday Club Paint
o Museum Steps and Ramp
o Rohner Park Roofs
Park/Facility Maintenance Tasks Completed (in addition to several routine items):
• Caught up on several routine items following July’s conclusion • Installed new lighting at Deep Pit BBQs
• Pavilion Service Window Updates
• Delivered tables and receptacles downtown for special events • Daily field dressing for adult softball
• Bus stop trash-pull
• Landscaping at Franklin Estates and Senestraro Way
Special Events Information
• The following tracked special event hours were dedicated to preparation, event coverage, and post-event cleanup:
o Hops in Humboldt: 35 staff hours (approximately $1,525 based on the average Park Maintenance straight-time wage).
Consent Agenda Item 4e
Rentals
There were seven Monday Club rentals. The Rec Hall was largely used by Summer Fun.
Aside from Rec programming, there were four Rec Hall rentals. There were four Picnic Area/Cookshack rentals. Additionally, several user groups, such as Emerald Football Club, Eel River Valley Youth Soccer League, Genealogical Society, Fortuna Garden Club, Fortuna High School, and Results Fit Camp, continue to use our indoor and outdoor facilities on a recurring basis.
Community Service
In August, four community service workers serviced hours assigned by Humboldt County Probation to the Parks and Recreation Department. Together, they completed a total of approximately 37.5 hours.
Recreation
▪ The Adult Softball League concluded followed by the kickoff of the CoEd Softball League started.
▪ Skate programming resumed on August 1 after it was paused for the month of July due to special events.
▪ In August, the last two weeks of Summer Fun Program had a total of 130 participants. ▪ Year-Round Recreation Programs (Firemen’s Pavilion) Schedules:
o Drop-in Pickleball: Monday, Wednesday, and Friday mornings, 9am – 12pm, at the Firemens Pavilion. Monday evening from 6pm-8pm, Tuesday and Sunday evenings from 7pm – 9pm
o Drop-in Basketball: Thursday evenings, 7pm – 9pm, at the Firemens Pavilion. o Drop-in Volleyball: Sunday evenings, 5pm – 7pm, at the Firemens Pavilion (Paused).
o Public Skate: Fridays and Saturdays, 6:30pm – 9:30pm, and Sunday afternoons, 1:30pm – 4:00pm, at the Firemens Pavilion.
Year-Round
Programs
Drop-In
Pickleball
Drop-In
Basketball
Drop-In
Volleyball
Public
Skate
Private
Skate Party
Total Sessions 26 4 0 12 10
Total
Participants
422 66 0 201 148
Fortuna Transit
• In August, 5 new riders signed up for the transit service.
Consent Agenda Item 4e
Rider/Miles/Hours Stats
August
2025
August
2026
YTD July 2025-
June 2026
YTD July 2026-
June 2027
Total
Passengers
418 471 672 1072
Total Miles 1548 1610 2532 3717
Service Miles 1444 1515 2364 3478
Total Hours
Worked
187.25 184.25 290.25 447.75
Service Hours
Worked
174.75 173.25 272.50 409.75
Fortuna Depot Museum
▪ August’s visitor total at the Fortuna Depot Museum is 269 people. This is in the middleto-high range of our August visitation totals in the post-pandemic era. August visitation totals in recent years were: 2025: 372, 2024: 239, 2023: 209, 2022: 250, 2021: 186, 2020:
closed, 2019: 485, 2018: 378, 2017: 477, 2016: 393.
▪ In August 2026 we welcomed California visitors from Arcadia, Blocksburg, Bridgeville, Carlotta, Chico, Cloverdale, Concord, Elk River, Eureka, Fair Oaks, Ferndale, Fortuna, Knight’s Landing, Los Angeles, Marysville, McKinleyville, Oroville, Palm Springs, Paradise, Petrolia, Red Bluff, Redding, Redway, Rio Dell, Sacramento, Saint Helena, San Diego, San Francisco, San Jose, Shively, Temecula, Trinidad, Ukiah, and Visalia. We also welcomed out-of-state visitors from Arizona, Florida, Idaho, Michigan, New Mexico, Oklahoma, Oregon, Texas, Virginia, and Washington, as well as international visitors from China, Costa Rica and Spain.
▪ Six volunteers have assisted with staffing the museum to cover the 7-days-a-week throughout summer. Some have also assisted the curator with various museum projects.
River Lodge
▪ City Council has selected Fortuna Chamber of Commerce as the new operator of the River Lodge. Staff are working closely with the Chamber to plan the transition. ▪ Deferred Maintenance Items:
o Sheetrock repair in the foyer from earthquake damage. o Paint sheetrock that was already repaired in the main rooms. o Replace failing windowpanes throughout.
o Kitchen drainage (currently requiring weekly maintenance) Consent Agenda Item 4e
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Quality of Life: Family, Nature & Neighbors Safety, family life, care for youth, cleanliness, parks, forests, and river. Fortuna’s #1 value across every instrument and generation in this process.
Community Connection & Care: Close-knit feel, big community events, volunteering, showing up for each other.
Clear Direction Consistent decisions based on shared principles that outlast any one leader. Every Council member interviewed named this as essential.
Committed Service Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health Priority 3: Fiscal Foundation — Revenue, Cost Accounting & Honest Commitments Priority 6: Parks, Trails & Outdoors — Fortuna's Natural Advantage Priority 8: Youth, Recreation & Community Life
Priority 9: Building A Communication Culture & Fortuna's Voice RECOMMENDED COUNCIL ACTION:
Receive Parks and Recreation Department Monthly Report. Consent Agenda vote.
August 2025 August 2026 Fiscal YTD
26-27
Total Events 9 9 18
Total Attendees
(Based on estimated
attendance on rental
application)
1220 338 1145
Total Days
Occupied
15 12 23
Consent Agenda Item 4f
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council
FROM: Matthew Eberhardt, Interim Chief of Police
SUBJECT: Police Department Monthly Report for August 2026 STAFF RECOMMENDATION:
Receive report as an informational item.
EXECUTIVE SUMMARY:
Patrol Statistics:
• 1,410 Calls for Service
• 292 Officer Initiated
• 87 Case Investigations
• 48 Misdemeanor Arrests
• 14 Felony Arrests
• 140 Traffic Stops
• 36 Citations Issued
Crime statistics and information on calls for service are available at forpd.crimegraphics.com.
Staffing:
• Vacancies: Four Fulltime Sworn Police Officer positions. One Part-Time/On-Call Public Safety Dispatcher position. One Part-Time Community Services Officer position and one Part-Time Code Compliance Officer.
• Recruitment Update: The city is accepting applications for the position of Chief of Police.
The applicant for the Part-time Code Compliance officer did not successfully complete the hiring process. The applicant for the Part-Time On-Call Dispatcher position is continuing through the background process.
• One Fulltime Sworn Officer position and one Part-Time Community Services Officer remain held vacant due to the active hiring freeze.
Training:
• Sergeant Palmer attended Internal Affairs Investigation Training in Sacramento • FTO Moore attended Firearms Instructor Training Susanville • All Sworn officers completed the CIRA Back safe Training Consent Agenda Item 4f
Enforcement/Community Engagement:
• 3 subjects arrested for driving under the influence.
• Officer Moore and K9 partner Blitz and Chief Eberhardt participated in the Fortuna First Friday event on Main Street.
• K9 Officer Moore attended the Grand Re-opening of Grocery Outlet with his K9 partner Blitz.
• Sergeant Primofiore conducted a presentation for the Criminal Justice class at FUHS • Lt. Kadle fulfilled the duties of Acting Chief, during Chief Eberhardt’s scheduled vacation. • Head JV Football Coach Officer Burley and Special Teams Assistant Coach Lt. Kadle and the JV Husky Football team were victorious in the first game of the year against St. Helena.
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Quality of Life: Family, Nature & Neighbors Safety, family life, care for youth, cleanliness, parks, forests, and river. Fortuna’s #1 value across every instrument and generation in this process.
Community Connection & Care: Close-knit feel, big community events, volunteering, showing up for each other.
Committed Service Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health RECOMMENDED COUNCIL ACTION:
Motion to receive Police Department Monthly Report. Consent Agenda vote.
Consent Agenda Item 4g
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and Council Members
FROM: Brian Issa, Public Works Director
THROUGH: Amy Nilsen, City Manager
SUBJECT: Public Works/Engineering Department Monthly Report STAFF RECOMMENDATIONS:
Receive report as an informational item.
EXECUTIVE SUMMARY:
The Public Works Director and Public Works divisions engaged in the following key activities during August.
• Continued coordination with Jacobs on the National Pollutant Discharge Elimination System (NPDES) Compliance Project, including design development, regulatory strategy, Supervisory Control and Data Acquisition (SCADA) integration, and project management. • Coordinated with the State Water Board on the basin plan amendment process and permitting of the City’s percolation ponds as a final point of summer discharge. • Advanced major transportation and roadway initiatives, including Kenmar Interchange design and approval work with GHD and the California Department of Transportation (Caltrans), corridor planning, Americans with Disabilities Act (ADA) improvements, and paving program development.
• Participated in Mill District development coordination, including infrastructure needs, site access, and developer-funded improvements.
• Continued initial steps for the Great Redwood Trail Project Approval and Environmental Document (PA&ED) grant, including consultant selection and grant acceptance actions. • Coordinated with Vero Fiber on rollout activities and City infrastructure concerns under its encroachment permit.
• Coordinated with legal counsel to submit comments on the draft Small Municipal Separate Storm Sewer System (MS4) regulations, focusing on implementation timelines, funding constraints, rural community impacts, and flexibility for disadvantaged communities. • Continued Senate Bill 1383 (SB 1383) regional coordination and solid waste reporting and compliance work.
• Negotiated an updated agreement with Caltrans for use of the Corporation Yard for its asphalt testing facility.
Consent Agenda Item 4g
Utilities Division – Utilities Superintendent
Water Distribution System
• The utilities crew read meters, changed out 12 dead meters, and completed the meter worksheet.
• The utilities crew upgraded 124 single port radios, 16 dual port radios, and 156 total meters.
• The utilities crew installed one new 1” water service this month. • On-call personnel responded to 14 after-hours callouts. • The utilities crew completed 14 shutoffs for nonpayment. • There were 7 water leaks repaired this month; the following table displays the details:
Sewer Collection System
• There were zero Sanitary Sewer Overflows (SSOs).
• The Utilities crew cleaned approximately 5,700 feet of sewer lines. • On-call personnel responded to one sewer-related callout.
Service Calls Summary
• Underground Service Alert (USA): The utilities crew marked 29 USA tickets; zero were mismarked.
• A total of 94 service calls were completed. Figure 1 shows the breakdown by type:
Figure 1: Service call breakdown
Projects & Miscellaneous Tasks
• The Utilities division continues to add to the City’s GIS database, focusing on water meter and radio transmitter inventory to better assist the radio upgrade Capital Improvement Program (CIP). The database now includes approximately 61.6% of all water meters. 23 28
21 22
OCCUPANT CHANGES
DISCONNECTS
SERVICE ACTIONS
CONNECTS
0 5 10 15 20 25 30
Service Calls
Service Calls By Type
Date Location Main
or
Service
Size and Pipe
Material
Estimated Leak
Rate (Gallons per
Minute)
Total Estimate Leak
Volume (Gallons)
8/2/26 14th Street Service 1” PE 30 1,800
8/19/26 N Fortuna Blvd Service 1” PE 5 7,200
8/19/26 O Street Service ¾” PE 3 4,320
8/19/26 Newburg Court Service 2” SCH 40 PVC 30 43,200
8/25/26 15th Street Service 1” PE 5 7,200
8/26/26 15th Street Service 1” Blue PE 5 7,200
8/31/26 Cole Court Main 1” GALV 2 17,280
TOTAL: 88,200
Consent Agenda Item 4g
• The Utilities crew has been assisting Wendt Construction with the valve replacement project by handling notices, valve shutoffs, line refilling and flushing, and water sampling. • During the first fiscal year of the meter radio transmitter replacement program, the crew achieved a consistent rate of 100 upgrades per month. With increased CIP funding, the program capacity was expanded to 150 upgrades per month. This increase is projected to reduce the overall project schedule by approximately 33%, accelerating completion by an estimated nine months.
Water Treatment/Wastewater Division – Chief Plant Operator Table 2. August wastewater plant effluent flows for the past five years in Million Gallons (MG) and Million Gallons per Day (MGD).
Figure 2. August wastewater plant effluent flows for the past five years in Million Gallons (MG) and Million Gallons per Day (MGD).
Wastewater Events & Maintenance Tasks Completed:
• Staff, with assistance from the Streets Department, removed brush from the treatment plant overflow ponds.
• One staff member passed the Grade III wastewater treatment certification exam. • Staff made repairs to the effluent chlorine analyzer. • Staff, with assistance from Wahlund Construction’s electrical division, troubleshot and repaired the plant automatic transfer switch.
• Staff replaced the rotor stator and expansion joint on primary sludge pump 311. • Staff replaced the suction side check valves on Nob Hill lift station pumps 1 and 2. • Staff made repairs to the grit pump chamber sump pump piping. • Staff completed preparation and painting for the replacement grit cyclone cone. • Staff made repairs to the digester lid condensate trap. 0 5
10 15
20 25
30 0
0.2 0.4
0.6 0.8
1 1.2
2022 2023 2024 2025 2026
Total Flow, MG
Flow, MGD
Total Monthly Flow, MG MAX Daily Flow, MGD AVG Daily Flow, MGD Year 2022 2023 2024 2025 2026
Total Monthly Flow, MG 26.560 25.750 21.880 19.570 25.790 Maximum Daily Flow, MGD 1.000 1.000 1.010 0.750 0.950
Average Monthly Flow, MGD 0.857 0.831 0.706 0.631 0.832 Consent Agenda Item 4g
Water Treatment
Table 3. August potable water production for the past five years in Million Gallons (MG).
Figure 3. August potable water production for the past five years in Million Gallons (MG).
Water Events & Maintenance Tasks Completed:
• Staff completed third-quarter Per- and Polyfluoroalkyl Substances (PFAS) testing on the City wells with a non-detect on all tested wells.
• Staff completed and submitted the monthly drought report and the monthly coliform testing report.
General Services and Streets – General Services Superintendent The following is a list of scheduled assignments completed by the General Services staff in August:
• Staff prepared and provided traffic control closures for First Friday and Fortuna Vintage Market special events.
• Staff painted yellow and white traffic markings before the start of the school year. • Staff installed foundations for radar feedback signs on Ross Hill Road and 12th Street; the signs were installed the following week.
• Staff chipped accumulated limbs and debris at the treatment plant. • Staff mowed overgrown vegetation in the Newburg Park expansion area, cut low-hanging limbs along the Newburg Park property line, and removed a fallen limb from Main Street. • Staff cut overgrown vegetation at Vancil Reservoir, mowed vegetation, and removed remaining dirt from the percolation ponds for winter use. • Staff mowed the right-of-way shoulder along Fortuna Boulevard. • TreeTactics completed the hazardous tree removal by grinding the remaining stump on Barney.
• Staff removed and replaced failing asphalt with hot mix asphalt and paved water ditches with temporary cold mix.
• In addition to the special tasks noted above, staff completed routine maintenance activities, including Underground Service Alert markings, street sweeping, recycling and trash 0 0.5
1 1.5
2 34
36 38
40 42
44 46
2022 2023 2024 2025 2026
Flow, MGD
Production, MG
Production Max Daily Avg Daily
Year 2022 2023 2024 2025 2026
Total Production, MG 42.600 44.387 38.434 42.378 41.615 Maximum Daily, MG 1.735 1.893 1.678 1.786 1.787
Average Daily, MG 1.374 1.432 1.239 1.367 1.342
Consent Agenda Item 4g
management, battery collection at City Hall, road maintenance, Dog Park maintenance, vegetation management, curb trimming, safety training, and inspections. Staff also remained available for public requests and emergency response needs.
RECOMMENDED COUNCIL ACTION:
Receive Public Works Department Monthly Report. Consent Agenda vote.
Consent Agenda Item 4h
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council Members
FROM: Amy Nilsen, City Manager
SUBJECT: Report of Disbursements
STAFF RECOMMENDATION:
Receive staff report of disbursements that were processed for the City of Fortuna and the Successor Agency (Fortuna Redevelopment Agency) if applicable, as an informational item only.
REPORT OF DISBURSEMENTS:
Disbursement was processed as follows:
September 16, 2026 $50,018.76
RECOMMENDED COUNCIL ACTION:
Informational Item. Receive report by Consent Agenda vote.
ATTACHMENTS:
• Disbursements Detail Report for September 16, 2026
Amount
9/16/2026 8:36:30 AM Page 1 of 5
85787 09/16/2026 FREEDOM FUEL 1019283 Equipment Fuel 60 85788 09/16/2026 GRAINGER 9073585375 Calibration Cylinder/Regulator - WWTP 580.1 85786 09/16/2026 FORTUNA ACE HARDWARE 412871 Crackstop/Caulk - Streets 68.94 85786 09/16/2026 FORTUNA ACE HARDWARE 412878 Brush/Handle/Fly Traps/Car Wash - Gen Services 84.01 85786 09/16/2026 FORTUNA ACE HARDWARE 412832 Batteries/Janitorial Supplies - Parks 21.89 85786 09/16/2026 FORTUNA ACE HARDWARE 412832 Batteries/Janitorial Supplies - Parks 38.94 85785 09/16/2026 ECOLAB 6361504276 River Lodge Dishmachine Rental FY 26/27 156.91 85786 09/16/2026 FORTUNA ACE HARDWARE 412739 Smoke Detecotr - Parks 51.31 85784 09/16/2026 CEL ANALYTICAL INC 260811-7931 Lab Testing 380 85785 09/16/2026 ECOLAB 6361424699 River Lodge Sanitizer Chemicals FY 26/27 262.8 85783 09/16/2026 AT&T MOBILITY - CC GQQ082026 August Cellular Data Service 44.53 85783 09/16/2026 AT&T MOBILITY - CC GQQ082026 August Cellular Data Service 24.97 85783 09/16/2026 AT&T MOBILITY - CC GQQ082026 August Cellular Data Service 436 85783 09/16/2026 AT&T MOBILITY - CC GQQ082026 August Cellular Data Service 51.5 85783 09/16/2026 AT&T MOBILITY - CC GQQ062026 June Cellular Data Services 8.61 85783 09/16/2026 AT&T MOBILITY - CC GQQ082026 August Cellular Data Service 3 85783 09/16/2026 AT&T MOBILITY - CC GQQ062026 June Cellular Data Services 37.5 85783 09/16/2026 AT&T MOBILITY - CC GQQ062026 June Cellular Data Services 14.14 85783 09/16/2026 AT&T MOBILITY - CC GQQ062026 June Cellular Data Services 3 85783 09/16/2026 AT&T MOBILITY - CC GQQ062026 June Cellular Data Services 268 85781 09/16/2026 AT&T 9011 25790021 9391062011 54.24
85781 09/16/2026 AT&T 9011 25790022 9391062012 41.46
85781 09/16/2026 AT&T 9011 25790020 9391062010 48.21
85781 09/16/2026 AT&T 9011 25790020 9391062010 89.53
85781 09/16/2026 AT&T 9011 25790019 9391062009 88.76
85781 09/16/2026 AT&T 9011 25790019 9391062009 164.85
85781 09/16/2026 AT&T 9011 25789994 9391061253 82.84
85781 09/16/2026 AT&T 9011 25789994 9391061253 16.57
85781 09/16/2026 AT&T 9011 25789992 9391061251 118.24
85781 09/16/2026 AT&T 9011 25789993 9391061252 253.2
85781 09/16/2026 AT&T 9011 25789990 9391061249 37.48
85781 09/16/2026 AT&T 9011 25789991 9391061250 16.35
85781 09/16/2026 AT&T 9011 25789986 9391061220 52.4
85781 09/16/2026 AT&T 9011 25789987 9391061221 26.98
85781 09/16/2026 AT&T 9011 25789985 9391061219 26.2
85781 09/16/2026 AT&T 9011 25789985 9391061219 26.2
85781 09/16/2026 AT&T 9011 25789983 9391061217 26.98
85781 09/16/2026 AT&T 9011 25789984 9391061218 77.84
85781 09/16/2026 AT&T 9011 25789980 9391061213 257.27
85781 09/16/2026 AT&T 9011 25789981 9391061214 26.98
85781 09/16/2026 AT&T 9011 25789976 9391061209 179.48
85781 09/16/2026 AT&T 9011 25789979 9391061212 26.98
85781 09/16/2026 AT&T 9011 25753342 9391083962 287.87
85781 09/16/2026 AT&T 9011 25789975 9391061208 26.98
85781 09/16/2026 AT&T 9011 25752195 9391082149 369.61
85781 09/16/2026 AT&T 9011 25752195 9391082149 369.62
85781 09/16/2026 AT&T 9011 25752195 9391082149 1013.01
85781 09/16/2026 AT&T 9011 25752195 9391082149 629.71
85781 09/16/2026 AT&T 9011 25752195 9391082149 3910.24
85781 09/16/2026 AT&T 9011 25752195 9391082149 2180.53
85781 09/16/2026 AT&T 9011 25748178 9391061243 147.77
85781 09/16/2026 AT&T 9011 25748437 9391062358 64.48
85781 09/16/2026 AT&T 9011 25748174 9391061237 54.76
85781 09/16/2026 AT&T 9011 25748174 9391061237 101.69
Expense Approval Report
CITY OF FORTUNA By (None)
Payment Dates 9/16/2026 - 9/16/2026
Payment Number Payment Date Vendor Name Payable Number Description (Item) Amount
9/16/2026 8:36:30 AM Page 2 of 5
85809 09/16/2026 US BANK EQUIPMENT FINANCE 590957544 Printer Leases FY 26/27 831.73 85809 09/16/2026 US BANK EQUIPMENT FINANCE 590957544 Printer Leases FY 26/27 324.23 85807 09/16/2026 RYDER, BILL 090826 River Lodge Piano Tuning Service 210 85808 09/16/2026 SWRCB 090926 Wastewater Grade 3 Cert Application - J Rizzo 419 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08269457 99509569457 34.9 85806 09/16/2026 RON DUPRATT FORD 172083A Transceiver - General Services 56.94 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08267872 67125257872 51.48 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08269363 48780729363 14.69 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08265729 75033105729 151.86 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08266485 44193066485 27.03 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08262501 10129392501 408.9 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08262728 48364062728 12.56 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08260906 78346610906 51.97 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08261200 81934311200 100.18 85804 09/16/2026 O'REILLY AUTOMOTIVE STORE 399957 Air Jack - Utilities 339.84 85805 09/16/2026 PACIFIC GAS & ELECTRIC CO 08260729 95900010729 98.82 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 822.65 85803 09/16/2026 OPTIMUM SEPT26MC Monday Club WiFi Service FY 26/27 126.43 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 91.41 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 685.54 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 319.92 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 365.62 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 548.43 85802 09/16/2026 NYLEX.NET 17723 Nework Support Services FY 26/27 2471.43 85800 09/16/2026 NC UNIFIED AIR QUALITY MGMNT DISTRICT 7990 Annual Renewal Fees FY 26/27 7100.05 85801 09/16/2026 NOR CAL GLOVES 1588804 Latex Gloves - WWTP 612.11 85799 09/16/2026 MITCHELL LAW FIRM, THE 12079 City Attorney Services FY 26/27 555 85800 09/16/2026 NC UNIFIED AIR QUALITY MGMNT DISTRICT 7990 Annual Renewal Fees FY 26/27 5533.93 85798 09/16/2026 MISSION LINEN INDUS SERV 526713516 Wastewater Linen Service 101.38 85798 09/16/2026 MISSION LINEN INDUS SERV 526713526 Parks/Rink Linen Service 106.75 85798 09/16/2026 MISSION LINEN INDUS SERV 526713515 Corp Yard Linen Service 92.5 85798 09/16/2026 MISSION LINEN INDUS SERV 526713515 Corp Yard Linen Service 65.62 85797 09/16/2026 MICROBAC LABORATORIES INC 190420 Lab Testing 485 85798 09/16/2026 MISSION LINEN INDUS SERV 526696317 River Lodge Linen Service 39.11 85797 09/16/2026 MICROBAC LABORATORIES INC 190355 Lab Testing 60 85797 09/16/2026 MICROBAC LABORATORIES INC 190420 Lab Testing 340 85797 09/16/2026 MICROBAC LABORATORIES INC 190334 Lab Testing 436 85797 09/16/2026 MICROBAC LABORATORIES INC 190354 Lab Testing 130 85797 09/16/2026 MICROBAC LABORATORIES INC 190331 Lab Testing 930.5 85797 09/16/2026 MICROBAC LABORATORIES INC 190334 Lab Testing 447 85796 09/16/2026 MERCER FRASER COMPANY 119986 Emulsion Oil 164.25 85797 09/16/2026 MICROBAC LABORATORIES INC 190331 Lab Testing 298 85796 09/16/2026 MERCER FRASER COMPANY 119985 Asphalt Concrete 273.64 85796 09/16/2026 MERCER FRASER COMPANY 119985 Asphalt Concrete 1832.09 85794 09/16/2026 JORDAN, JONNY 082426 Per Diem 9.21 - 9.25 (SRO Training) 471 85795 09/16/2026 LIEBERT CASSIDY WHITMORE 333433 Legal Services 300 85792 09/16/2026 HUMB CO DEPT OF HEALTH 135717133763133762133518HazMat/CUPA Permit - Vancil Pump 569.48 85793 09/16/2026 HUMBOLDT SECTION CATA 081326 Park Deposit Refund 250 85792 09/16/2026 HUMB CO DEPT OF HEALTH 135715133759133758133516Haz Mat/CUPA Permit - Seneca Pump 569.48 85792 09/16/2026 HUMB CO DEPT OF HEALTH 135716133761133760133517HazMat/CUPA Permit - Muni Water Well 684.43 85792 09/16/2026 HUMB CO DEPT OF HEALTH 135713133755133754133514HazMat/CUPA Permit - Strongs Creek Lift Station 569.48 85792 09/16/2026 HUMB CO DEPT OF HEALTH 135714133751133756133515HazMat/CUPA Permit - Muni WW Plant 1029.28 85792 09/16/2026 HUMB CO DEPT OF HEALTH 133675133676 CalARP Program - Muni Water Well 1400 85792 09/16/2026 HUMB CO DEPT OF HEALTH 135688133642133641 APSA/CUPA Permit - Muni WW Plant 460.5 85791 09/16/2026 HOPS IN HUMBOLDT 062326 Park Deposit Refund 250 85792 09/16/2026 HUMB CO DEPT OF HEALTH 133674 CalARP Program - Muni WW Plant 1030 85789 09/16/2026 GROCERY OUTLET 090326 Janitorial Supplies - Parks/MC/CH 2.72 85790 09/16/2026 HIGHWAY SPECIALTY CO INC 264054 Marking Paint/Drive Pin Rivets - Streets 360.5 85789 09/16/2026 GROCERY OUTLET 090326 Janitorial Supplies - Parks/MC/CH 2.72 85789 09/16/2026 GROCERY OUTLET 090326 Janitorial Supplies - Parks/MC/CH 5.47 Expense Approval Report Payment Dates: 9/16/2026 - 9/16/2026 Payment Number Payment Date Vendor Name Payable Number Description (Item) Amount
Grand Total: 50018.76
9/16/2026 8:36:30 AM Page 3 of 5
85809 09/16/2026 US BANK EQUIPMENT FINANCE 590957544 Printer Leases FY 26/27 253.75 85810 09/16/2026 WOODS PEST CONTROL 1405618 River Lodge Pest Service FY 26/27 150 Expense Approval Report Payment Dates: 9/16/2026 - 9/16/2026 Payment Number Payment Date Vendor Name Payable Number Description (Item) 500-5500-6100 Department Supplies 65.62
9/16/2026 8:36:30 AM Page 4 of 5
280-5500-4200 Department Supplies 429.44
280-5525-4200 Asphalt 273.64
280-6505-4200 Utility - General & Electric 199
160-6210-5800 Internet Service 629.71
160-6505-5700 Utility - General & Electric 151.86
189-7000-2000 Travel, Conferences & Training 471
160-6200-5700 Telephone 26.98
160-6200-5800 Telephone 353.02
160-6210-5700 Internet Service 126.43
160-5706-5800 Equipment Lease 156.91
160-5740-5800 Building Repair and Maintenance 150
160-5775-5800 Network Support 91.41
160-5565-5800 Janitorial Supplies 39.11
160-5575-5800 Kitchen Chemical 262.8
160-5705-5800 Equipment Maintenance 210
120-6200-3000 Telephone 16.57
120-6205-3000 Cell Phones 89
160-5500-5700 Department Supplies 2.72
100-6210-5450 Internet Service 1013.01
100-6220-2000 CLETS Service 287.87
100-6505-5450 Utility - General & Electric 487.63
100-6205-2000 Cell Phones 6
100-6210-1500 Internet Service 3910.24
100-6210-2000 Internet Service 2884.53
100-6020-1600 Legal Services 300
100-6200-2000 Telephone 649.06
100-6200-5400 Telephone 306.38
100-5775-4000 Network Support 319.92
100-5775-5400 Network Support 365.62
100-6020-1300 Legal Services 555
100-5745-5450 Vandalism Repair 51.31
100-5775-1500 Network Support 548.43
100-5775-2000 Network Support 2471.43
100-5705-2000 Equipment Maintenance 324.23
100-5705-5450 Equipment Maintenance 253.75
100-5715-4100 Vehicle Repairs 56.94
100-5565-1500 Janitorial Supplies 2.72
100-5565-5450 Janitorial Supplies 151.16
100-5705-1500 Equipment Maintenance 831.73
100-5500-4100 Department Supplies 176.51
100-5500-5450 Department Supplies 21.89
100-5505-5450 Vehicle Fuel & Oil 60
Account Summary
Account NumberAccount Name Payment Amount
100-1684 Distributed Telephone 370.3
100-2220 Refundable Park Deposits 500
280 - Gas Tax Fund 902.08
500 - Water Fund 13368.43
550 - Wastewater Fund 16038.87
590 - TDA Transit Fund 26.2
Grand Total: 50018.76
Fund Payment Amount
100 - General Fund 16905.66
120 - Development & Building Fund 105.57
160 - Riverlodge Fund 2200.95
189 - Measure Z Fund 471
Expense Approval Report Payment Dates: 9/16/2026 - 9/16/2026 Report Summary
Fund Summary
9/16/2026 8:36:30 AM Page 5 of 5
Grand Total: 50018.76
Project Account Summary
Project Account Key Payment Amount
**None** 50018.76
Grand Total: 50018.76
550-6612-6600 Permits 10189.31
550-7012-6600 Certification 419
590-6200-5000 Telephone 26.2
550-6205-6700 Cell Phones 33.58
550-6210-6700 Internet Service 369.62
550-6505-6600 Utility - General & Electric 86.87
550-5775-6700 Network Support 822.65
550-6045-6600 Laboratory Services 1851.5
550-6200-6500 Telephone 294.75
500-6612-6000 Permits 8757.32
550-5500-6600 Department Supplies 1293.59
550-5766-6600 Bio solids Management 678
500-6205-6300 Cell Phones 58.67
500-6210-6300 Internet Service 369.61
500-6505-6000 Utility - General & Electric 27.03
500-5775-6300 Network Support 685.54
500-6045-6000 Laboratory Services 977
500-6200-6100 Telephone 91.46
Account NumberAccount Name Payment Amount
500-5525-6100 Asphalt 1996.34
500-5715-6100 Vehicle Repairs 339.84
Expense Approval Report Payment Dates: 9/16/2026 - 9/16/2026 Account Summary
Consent Agenda Item 4i
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council
FROM: Aaron Felmlee, Finance Director
SUBJECT: Approve the Investment Policy for Fiscal Year 2026-27; Adopt Resolution 2026-31
STAFF RECOMMENDATION:
Approve the Investment Policy for Fiscal Year 2026-27; Adopt Resolution 2026-31 EXECUTIVE SUMMARY:
The purpose of the Investment Policy is to establish cash management and investment guidelines for the City Treasurer, who is responsible for the administration of the City of Fortuna Investment Program. It is the policy of the City of Fortuna to meet the short and long-term cash flow demands of the City in a manner which will provide for the safety of principal and sufficient liquidity, while providing an investment return.
The City last revised the investment policy on September 15, 2025. As such, it is time for the annual review by the City Council of the Investment Policy. Staff is not recommending any changes to the investment policy for fiscal year 2026-27.
The June 30, 2026, investment report for Council review is attached. Please note that the total funds listed in the investment report are pooled funds comprised of the many general funds, restricted funds, and enterprise funds held by the City and therefore a majority of the funds are restricted to specific projects and purposes.
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Quality of Life: Family, Nature & Neighbors Safety, family life, care for youth, cleanliness, parks, forests, and river. Fortuna’s #1 value across every instrument and generation in this process.
Economic Resilience The status quo is not sustainable. Generating City revenue is essential to keeping City services and investing in what Fortuna residents want.
Clear Direction Consistent decisions based on shared principles that outlast any one leader. Every Council member interviewed named this as essential.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health Priority 2: Our People — Staff Retention, Pay & Succession Priority 3: Fiscal Foundation — Revenue, Cost Accounting & Honest Commitments Priority 4: Economic Development to Build Fortuna's Future Consent Agenda Item 4i
FISCAL IMPACT:
None.
RECOMMENDED COUNCIL ACTION:
Motion to adopt Resolution 2026-31. Consent Agenda vote.
ATTACHMENTS:
• Resolution 2026-31, A Resolution of the City Council of the City of Fortuna Approving the Investment Policy for Fiscal Year 2026-27.
• City of Fortuna Investment Policy
• June 30, 2026 Treasurer’s Report
Consent Agenda Item 4i
RESOLUTION 2026-31
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF FORTUNA APPROVING THE INVESTMENT POLICY FOR FISCAL YEAR 2026-27 WHEREAS, sound investment practices are facilitated by the preparation of written governing policy statements, and;
WHEREAS, such policies should cover all substantive aspects of the investment of funds, and; WHEREAS, the City Treasurer has prepared a comprehensive Investment Policy document pursuant to which the City will manage and conduct investment of the City’s pooled funds, and; WHEREAS, in furtherance of the prudent management of the City’s treasury pools, the Investment Policy is in compliance with State law provisions establishing investment objectives and setting forth permissible investment of public funds not required for immediate expenditure, and;
WHEREAS, the Fortuna Municipal Code designates the City Finance Director as the City Treasurer, and;
WHEREAS, the delegation of investment authority and responsibility from the City Council to the City Treasurer will allow the City Treasurer and his staff to continue the prudent investment of the City’s pooled funds and the effective and efficient support of the City’s efforts to meet its cash flow needs.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Fortuna that the Council hereby
Section 1. Approves and adopts the Investment Policy submitted by the City Treasurer, attached hereto as Exhibit A.
Section 2. The City Council, pursuant to Government Code section 53607, delegates to the City Treasurer for a period of twelve (12) months the authority to invest the City’s pooled funds in accordance with the Investment Policy.
Section 3. Exhibit A is part of this resolution.
PASSED AND ADOPTED on this 21st day of September 2026 by the following vote:
AYES:
NAYS:
ABSENT:
ABSTAIN:
Mike Johnson, Mayor
ATTEST:
Siana L. Emmons, City Clerk
City of Fortuna
Investment Policy
September 15, 2025
Council Resolution 2025-24
A. Introduction
The purpose of this document is to identify various policies and procedures that enhance the opportunities for a prudent and systemic Investment Policy and to organize and formalize investment related activities. Related activities which comprise good cash management include accurate cash projections, the expeditious collection of revenue, the control of disbursements, cost-effective banking relations, and a short-term borrowing program which coordinates working capital requirements and investment opportunity. In concert with these requirements are many facets of an appropriate and secure short-term investment program.
B. Scope
It is intended that this policy cover all funds and investment activities under the direct authority of the City.
C. Objectives
The primary objectives of the City’s investment activities shall be, in order of priority:
1. Safety. Safety of principal is the foremost objective of the investment program. The City’s investments shall be undertaken in a manner that seeks to ensure preservation of capital in the overall portfolio.
2. Liquidity. The City’s investment portfolio will remain sufficiently liquid to enable the City to meet its reasonably anticipated cash flow requirements. An adequate percentage of the portfolio should be maintained in liquid, short-term securities which can be converted to cash if necessary to meet disbursement requirements.
3. Yield. Yield should become a consideration only after the basic requirements of safety and liquidity have been met. The City seeks to attain a market-average rate of return on its investments throughout economic cycles, taking into account the City’s risk constraints, the cash flow characteristics of the portfolio, and State and Local laws, ordinances or resolutions that restrict investments.
D. Prudence
All participants in the investment process shall recognize that the investment program is subject to public review and evaluation. The overall program shall be designed and managed with a degree of professionalism worthy of the public trust.
All persons authorized to make investment decisions on behalf of the City are trustees and therefore fiduciaries subject to the prudent investor standard. The prudent investor standard states, in essence, that “a trustee shall act with care, skill, prudence, and diligence under circumstances then prevailing, including, but not limited to, the general economic conditions and the anticipated needs of the agency,
that a prudent person acting in a like capacity and familiarity with those matters would use in the conduct of funds of a like character and with like aims, to safeguard the principal and maintain the liquidity needs of the agency.”
E. Delegation of Authority
The City Council delegates its authority to invest funds of the City for a one-year period to the City Treasurer, who shall thereafter assume full responsibility for those transactions until the delegation of authority is revoked or expires. Subject to review, the City Council may renew the delegation of authority each year. The Treasurer shall make all investment decisions and transactions in strict accordance with state law and this Investment Policy. If authorized by the City Council, the Treasurer may delegate his/her investment decision-making and execution authority to an investment advisor. The advisor shall follow the investment policy, herein stated, and such other written instructions as are provided.
According to Municipal Code Section 2.10.010 the Finance Director shall additionally function as the ity Treasurer of the City and shall be responsible, under the City Manager’s direction, for keeping the record of all investments and submitting the reports as required by this policy and the California Government Code.
The Treasurer and the delegated investment officers, acting in accordance with written procedures and the investment policy and exercising due diligence, shall be relieved of personal responsibility for an individual security’s credit risk or market price changes, provided deviations from expectations are reported in a timely fashion and appropriate action is taken to control adverse developments.
F. Ethics and Conflicts of Interest
Officers and employees involved in the investment process shall refrain from personal business activities that could conflict with proper execution of the Investment Program, or which could impair their ability to make impartial investment decisions.
G. Internal Controls
The Treasurer shall establish a system of written internal controls to regulate the City’s investment activities, including the activities of any subordinate officials acting on behalf of the City.
Controls deemed most important include: control of collusion, separation of duties, separating transaction authority from accounting and record keeping, custodial safekeeping, clear delegation of authority, specific limitations regarding securities losses and remedial action, minimizing the number of authorized investment officials, documentation of transactions and strategies, and code of ethics standards.
H. Authorized Financial Dealers and Institutions
A competitive process, when practical, will be used for all purchases and sales of investments. It shall be the City’s policy to purchase securities only from those authorized institutions and firms. No deposit of public funds shall be made except in a qualified public depository as established by state laws.
The Treasurer shall maintain a list of authorized broker/dealers and financial institutions that are approved for investment purposes. If an external investment advisor is authorized to conduct investment
transactions on the City’s behalf, the investment advisor may use their own list of approved broker/dealers and financial institutions for investment purposes. This list should be provided to the City.
I. Safekeeping and Custody
All security transactions entered into by the City shall be conducted on a delivery-versus-payment (DVP) basis. To protect against potential losses by collapse of individual securities dealers, and to enhance access to securities, interest payments and maturity proceeds, all securities owned by the City shall be held in safekeeping by a third party bank trust department, acting as agent for the City under the terms of a custody agreement executed by the bank and by the City. The only exception to the foregoing shall be depository accounts and securities purchases made with: (i) LAIF, the county pool, and other local government investment pools; (ii) time certificates of deposit, and, (iii) money market mutual funds, since the purchased securities are not deliverable.
J. Authorized and Suitable Investments
The City’s investments are governed by Government Code, Sections 53600 et seq. Within the investments permitted by the Government Code, the City seeks to further restrict eligible investment to the investments listed below. In the event an apparent discrepancy is found between this policy and the Government Code, the more restrictive parameters will take precedence.
The portfolio shall be diversified by security type and institution to avoid incurring unreasonable and avoidable risks regarding specific security types or individual financial institutions. Percentage holding limits listed in this section apply at the time the security is purchased. In the event a security held by the City is subject to a credit rating change that brings it below the minimum credit ratings specified in this policy, the Treasurer should notify the City Council of the change. The course of action to be followed will then be decided on a case-by-case basis, considering such factors as the reason for the change, prognosis for recovery or further rate drops, and the market price of the security.
1. United States Treasury Issues. United States Treasury notes, bonds, bills, or certificates of indebtedness, or those for which the faith and credit of the United States are pledged for the payment of principal and interest. There is no limitation as to the percentage of the portfolio that may be invested in this category.
2. Federal Agency Obligations. Federal Agency or United States government-sponsored enterprise obligations, participations, or other instruments, including those issued by or fully guaranteed as to principal and interest by federal agencies or United States governmentsponsored enterprises. There is no limitation as to the percentage of the portfolio that may be invested in this category; however purchases of callable Federal Agency obligations are limited to a maximum of 20 percent of the portfolio. In addition, purchases of Federal Agency mortgage-backed securities issued by or fully guaranteed as to principal and interest by government agencies are limited to a maximum of 20 percent of the portfolio.
3. California Municipal Debt. Registered treasury notes or bonds of this state, including bonds payable solely out of the revenues from a revenue-producing property owned, controlled, or operated by a state or by a department, board, agency, or authority of this state.
Bonds, notes, warrants, or other evidences of indebtedness of any local agency within this state, including bonds payable solely out of the revenues from a revenue-producing property
owned, controlled, or operated by the local agency, or by a department, board, agency, or authority of the local agency. Purchases are limited to securities rated at least in the “AA” category, or its equivalent, by a Nationally Recognized Statistical Rating Organization (“NRSRO”). A maximum of 15 percent of the portfolio may be invested in this category.
The amount invested with any one issuer shall not exceed 10 percent of the portfolio.
4. Medium-Term Notes. Medium-term notes are defined as all corporate and depository institution debt securities with a maximum remaining maturity of five years or less, issued by corporations organized and operating within the United States or by depository institutions licensed by the United States or any state and operating within the United States. Purchases are limited to securities rated at least in the “A” category, or its equivalent, by a NRSRO. A maximum of 30 percent of the portfolio may be invested in this category. The amount invested in corporate notes of any one issuer in combination with any other securities from that issuer shall not exceed 10 percent of the portfolio.
5. Negotiable Certificates of Deposit. Negotiable certificates of deposit (NCDs) issued by a nationally or state-chartered bank, a savings association or a federal association, a state or federal credit union, or by a state-licensed branch of a foreign bank. The full amount of the principal and the interest that may be accrued during the maximum term of each certificate of deposit shall at all times be insured by federal deposit insurance. NCDs may not exceed 5 years in maturity. A maximum of 30 percent of the portfolio may be invested in this category.
The amount invested in NCDs with any one financial institution in combination with any other securities from that financial institution shall not exceed 5 percent of the portfolio.
6. Commercial Paper. Commercial paper of “prime” quality of the highest ranking or of the highest letter and number rating as provided for by a NRSRO. The entity that issues the commercial paper shall meet all of the following conditions: (i) Is organized and operating in the United States as a general corporation. (ii) Has total assets in excess of five hundred million dollars ($500,000,000). (iii) Has debt other than commercial paper, if any that is rated at least in the “AA” category, or its equivalent, by a NRSRO.
Eligible commercial paper shall have a maximum maturity of 270 days or less and not represent more than 10 percent of the outstanding paper of an issuing corporation. A maximum of 25 percent of the portfolio may be invested in this category. The amount invested in commercial paper of any one issuer in combination with any other securities from that issuer shall not exceed 10 percent of the portfolio.
7. Bankers’ Acceptances. Bankers’ acceptances, otherwise known as bills of exchange or time drafts that are drawn on and accepted by a commercial bank. Purchases are limited to bankers’ acceptances issued by domestic or foreign banks, which are eligible for purchase by the Federal Reserve System. Purchases of bankers’ acceptances may not exceed 180 days maturity. Eligible bankers’ acceptances are restricted to issuing financial institutions with short-term paper rated in the highest category by a NRSRO. Investments in bankers’ acceptances are further limited to 40 percent of the portfolio. The amount invested in bankers’ acceptances of any one issuer in combination with any other securities from that issuer shall not exceed 10 percent of the portfolio.
8. Bank Deposits. FDIC insured or fully collateralized demand deposit accounts, savings accounts, market rate accounts and time certificates of deposits (“TCDs”) in financial
institutions located in California. The amount on deposit in any financial institution shall not exceed the shareholder’s equity. To be eligible to receive City deposits, the financial institution must have received a minimum overall satisfactory rating, under the Community Redevelopment Act, for meeting the credit needs of California Communities in its most recent evaluation. Bank deposits are required to be collateralized as specified under Government Code Section 53630 et. seq. The Treasurer, at his/her discretion, may waive the collateralization requirements for any portion that is covered by federal deposit insurance.
The City shall have a signed agreement with any depository accepting City funds per Government Code Section 53649. The maturity of TCDs may not exceed 1 year in maturity.
A maximum of 20 percent of the portfolio may be invested in TCDs.
9. Placement Service Time Certificates of Deposit. Certificates of deposit placed through a deposit placement service shall meet the requirements under Government Code Section 53601.8. The full amount of the principal and the interest that may be accrued during the maximum term of each certificate of deposit shall at all times be insured by federal deposit insurance. The maximum term for time certificates of deposit shall be five years. The combined amount invested in time certificates of deposit and negotiable certificates of deposit shall not exceed 30 percent of the portfolio.
10. State of California Local Agency Investment Fund (LAIF). LAIF is a voluntary program offering local agencies the opportunity to participate in a multi-billion dollar portfolio. LAIF is part of the State of California’ Pooled Money Investment Account (PMIA). Oversight of the PMIA is provided by a board whose members include the State Treasurer, Director of Finance, and the State controller. All securities are purchased under the authority of the California Government Code. There is no limitation as to the percentage of the portfolio that may be invested in this category.
11. Humboldt County Investment Pool. The City may invest in the Humboldt County Investment Pool operated by the Humboldt County Treasurer. A maximum of 50 percent of the portfolio may be invested in this category.
Whenever the City has any funds invested in County pool, the Treasurer shall maintain on file a copy of the pool’s current investment policy and its requirements for participation, including limitations on deposits or withdrawals. In addition, the Treasurer should review the pool’s summary portfolio holdings on a quarterly basis.
12. Local Government Investment Pools. Shares of beneficial interest issued by a joint powers authority organized pursuant to Government Code Section 6509.7. To be eligible for purchase, the pool must meet the requirements of California Government Code Section 53601(p), the pool must seek to maintain a stable Net Asset Value (“NAV”), and the pool must rated at least AAAm, or its equivalent, by a NRSRO. A maximum of 50 percent of the portfolio may be invested in this category.
Whenever the City has any funds invested in a LGIP, the Treasurer shall maintain on file a copy of the pool’s current information statement. In addition, the Treasurer should review the pool’s summary portfolio holdings on a quarterly basis.
13. Money Market Funds. Shares of beneficial interest issued by diversified management companies that are money market funds registered with the Securities and Exchange
Commission that invests solely in U.S. Treasuries and Federal Agency obligations and repurchase agreements relating to such obligations.
The company shall have met either of the following criteria: (A) Attained the highest ranking or the highest letter and numerical rating provided by not less than two NRSROs. (B) Retained an investment adviser registered or exempt from registration with the Securities and Exchange Commission with not less than five years of experience managing money market mutual funds with assets under management in excess of five hundred million dollars ($500,000,000). A maximum of 20 percent of the portfolio may be invested in this category.
If the City has funds invested in a money market fund, a copy of the fund’s information statement shall be maintained on file. In addition, the Treasurer should review the fund’s summary holdings on a quarterly basis.
K. Authorized Investments for Bond Proceeds
Bond proceeds shall be invested in the securities permitted by the applicable bond documents. If the bond documents are silent as to the permitted investments, bond proceeds will be invested in the securities permitted by this policy. Notwithstanding the other provisions of this policy, the percentage or dollar portfolio limitations listed in elsewhere in this policy do not apply to bond proceeds. In addition to the securities listed in Section J above, bond proceeds may be invested in a structured investment product if approved by the Treasurer.
L. Prohibited Investment Practices and Instruments
Any investment in a security not specifically listed in Section J, but otherwise permitted by the Government Code, is prohibited without the prior approval of the City Council. In addition, Government Code Section 53601.6 specifically prohibits investments in inverse floaters, range notes, or interest-only strips that are derived from a pool of mortgages.
M. Maximum Maturities
It is the objective of this policy to provide a system which will accurately monitor and forecast revenues and expenditures so that the City can invest funds to the fullest extent possible. Funds of the City will be invested in accordance with sound treasury management principles.
The maximum maturity of individual investments shall not exceed the limits set forth in Section J.
Where no maturity limit is stated, no investment shall exceed a maturity of five years from the date of purchase unless the City Council has granted express authority to make that investment either specifically or as a part of an investment program approved by the City Council no less than three months prior to the investment. With respect to maximum maturities, this policy authorizes investing bond reserve funds beyond five years if prudent in the opinion of the Treasurer.
N. Reporting
The Finance Director shall submit a quarterly investment report to the City Council. This report will include the following elements:
• Type of investment
• Name of issuer
• Date of maturity
• Amount of deposit or cost of security
• Current market value of securities with maturity in excess of twelve months • Coupon rate, if applicable
• Yield to maturity at cost
• A list of monthly investment transactions
• A statement that the portfolio complies with the investment policy, or the manner in which the portfolio is not in compliance
• A statement denoting the ability of the City to meet its liquidity requirements for the next six months, or provide an explanation as to why sufficient money shall, or may not be, available
O. Policy Adoption
This policy can be revised whenever necessary and will be reviewed by the City Council annually at a public meeting. Any change in the policy shall be reviewed and approved by the City Council at a public meeting.
CITY OF FORTUNA
Treasurer's Report
As of June 30, 2026
% of Effective
INSTITUTION COST VALUE MARKET VALUE Total Yield
Local Agency Investment Fund (LAIF) $ 24,172,052 $ 24,144,795 62.92% 3.92% Treasury Obligation Sweep - US Bank 3,697,951 3,697,951 9.64% 3.26% Post-Employment Benefits Trust - PARS 712,349 712,349 1.86% 7.22% Edward Jones - US Bank Trust 9,842,450 9,811,328 25.57% 4.10% Total Investments $ 38,424,802 $ 38,366,423
US Bank, General Checking $ 146,973 $ 146,973 0.38%
US Bank, Payroll Checking (142,887) (142,887) -0.37%
Petty Cash/Cashier's Change 1,615 1,615 0.00%
Total Cash with Banks* $ 5,701 $ 5,701 0.01%
TOTAL INVESTMENT & CASH EQUIVALENTS $ 38,430,503 $ 38,372,124 100.00% Respectfully submitted,
Aaron Felmlee
Treasurer
City of Fortuna
The LAIF, Treasury Obligation Sweep/US Bank, and Edward Jones/US Bank investment statements detailing all investment transactions and balances are on file in the Finance Department and available upon request. *Cash with Bank is shown based upon reconciled book balance.
This report accurately reflects all cash and investments and is in conformity with California Government Code Section 53646 and City of Fortuna's investment policy. The investment program shown herein is sufficient to meet City of Fortuna's expenditure requirement over the next six months.
Consent Agenda Item 4j
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council
FROM: Aaron Felmlee, Finance Director
SUBJECT: Authorization of Destruction of Selected Finance Department Files, Resolution 2026-32
STAFF RECOMMENDATION:
Authorize destruction of specific files by approving Resolution 2026-32.
EXECUTIVE SUMMARY:
A review of City files has resulted in the attached lists of files selected for destruction. Files selected for destruction meet the criteria according to California Government Code Section 34090.
State law provides that these records may be destroyed with the approval of the City Council by Resolution and the written consent of the City Attorney. A copy of this staff report was sent to the City Attorney for review and approval.
File destruction information was provided by the following department, and a list of City records scheduled for destruction is attached:
• Finance Department
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Clear Direction Consistent decisions based on shared principles that outlast any one leader. Every Council member interviewed named this as essential.
Committed Service Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health Priority 3: Fiscal Foundation — Revenue, Cost Accounting & Honest Commitments FISCAL IMPACT:
None.
Consent Agenda Item 4j
RECOMMENDED COUNCIL ACTION:
Motion to adopt Resolution 2026-32. Consent Agenda vote.
ATTACHMENTS:
• Resolution 2026-32: A Resolution of the City Council Authorizing the Destruction of Records
• List of files to be destroyed from Finance Department Consent Agenda Item 4j
RESOLUTION 2026-32
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF FORTUNA
AUTHORIZING THE DESTRUCTION OF RECORDS
WHEREAS, the City of Fortuna staff has determined that certain records are no longer needed for the operation of business, nor required by statute; and WHEREAS, California Government Code 34090 authorizes the destruction of City records upon approval of the City Council by resolution and written approval by the City Attorney.
NOW THEREFORE, BE IT RESOLVED that the City Council of the City of Fortuna hereby declares the attached City records to be no longer needed and may therefore be destroyed; and BE IT FURTHER RESOLVED that the City Attorney of the City of Fortuna hereby approves the destruction of the attached City records.
PASSED AND ADOPTED, on the 21st day of September 2026, by the following vote:
AYES:
NOES:
ABSTAIN:
ABSENT:
APPROVED:
Ryan Plotz, City Attorney Mike Johnson, Mayor
ATTEST:
Siana L. Emmons, City Clerk
File Destruction
Finance Department
September 2026
The following Finance Department records are submitted for destruction:
Files older than and up to FY 2018-2019:
Payroll Time Cards
Files older than and up to FY 2019-2020:
Bank Reconciliations
Cancelled and Voided Accounts Payable Checks
Cancelled and Voided Payroll Checks
Ceased Business Licenses
Check Copies
Files older than and up to FY 2020-2021:
A/P Invoice Copies
Bank Deposit Books
Cash Receipt Books
Cash Receipts by Detail
Open Payables
PO Requisition Books
Warrant Register by Fund
Files older than and up to FY 2022-2023:
Adjustment Register
Area Report Register
Journal Entries
Service Call Books
A/R Billing Invoices
Cash Receipts
Delinquent Reports Register Open Receivable
Deposit Receipt Books Invoice Entry
PO Copies
Warrant Register
Federal & State Tax (1096, 1099, W-4 & W-2’s)
Bank Statements
Closing Bill Register
Register - Water and Sewer
Water and Sewer Billing
Reviewed by: ____________________________________________ Aaron Felmlee – Finance Director
Approved by:________________________________________________________________ Amy Nilsen – City Manager
Consent Agenda Item 4k
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council
FROM: Brendan Byrd, Community Development Director/City Engineer SUBJECT: Consider Revisions to the Organizational Chart and Full-Time Pay Rate Schedule for the Community Development/Public Works Department STAFF RECOMMENDATION:
Approve the proposed revisions to the City of Fortuna Fiscal Year 2026-27 Organizational Chart and Full Time Pay Rate Schedule.
EXECUTIVE SUMMARY:
The Community Development Department is proposing several changes to the department’s organizational structure. Each proposed change is discussed in individual detail below, and the recommended draft revisions to the Organizational Chart and Full-Time Pay Rate Schedule are included as attachments.
1. Move Engineering Positions from Public Works to Community Development With the hiring of the Community Development Director position the City Engineer role has now moved into the Community Development Department, while the current organizational chart still shows the Deputy City Engineer and Engineering Technician position in the Public Works Department. Staff are proposing to move these two positions into the Community Development Department on the organizational chart, which reflects the current supervisory structure of the Engineering Division. Staff will note that this change does not modify the duties of those positions, how their pay is allocated, or the types of projects they’ll be engaged in. These positions will continue to work across several departments as part of their duties, and they will still be largely focused on engineering-related tasks in the Public Works Department.
2. Change the Engineering Technician II position to Assistant City Engineer Staff are proposing to modify the current Engineering Technician II position title to Assistant City Engineer. This title, and the associated job description, better reflects the current duties and expectations of the position. This change also provides a more formal opportunity for the employee to advance their skills and expectations within the organization. Staff will note the employee is supportive of this proposed change, and that there is not a recommendation to change the salary for the position, just the title.
3. Modify the Planning Division to make the Senior Planner position a supervisory role Currently the Community Development Director directly supervises the Department’s Senior Administrative Assistant, and the Senior Planning has no supervisory responsibilities. In practice the Senior Planner directs the workload of this position, and as a Division Head the Senior Planner classification is a level that traditionally has a supervisory role in their Department. Staff are proposing to modify the organization chart so that the Senior Planner Consent Agenda Item 4k
has direct supervisory responsibility for the Senior Administrative Assistant position. Staff will note that the current employee is supportive of this change.
4. Add a Senior Project Manager Position to the Engineering Division Over the past 8-10 years the Engineering Division has regularly needed to modify the division head-level position in order to recruit or retain qualified staff. This has included classifications that are both licensed engineering professionals and non-licensed professionals, with position titles including Deputy City Engineer, Deputy Public Works Director, Public Works Project Manager, and Engineering Technician III. During transitions in staff at this position vacancy periods are usually 6-12 months, and it is typical that during those vacancy periods staff have identified the need to modify position specifics in order to recruit a new qualified candidate.
As the Council is aware this position is currently vacant, and staff have brought to the Council a hiring freeze exemption in early June of this year. Staff have conducted a recruitment to backfill this position and have received no qualified applications to date. At the closure of the recruitment staff reviewed the pay scale for the position; the division needs and are proposing that the Council approve modifying the current Deputy City Engineer classification to be Deputy City Engineer OR Senior Project Manager. In the budget there would only be one (1) full-time equivalent position, therefore even though there would be two titles listed in the organizational chart it would only be staffed by a single employee that possesses the necessary qualifications for the position title they are assigned. The newly created position of Senior Project Manager would have the same general job duties as the Deputy City Engineer; however, the job description would be written to require more years of professional experience in lieu of an engineering license (or potential of an engineering license). Staff will note that engineering licensure is not a requirement to successfully perform the duties included in this position as long as the City employs or contracts for the services of a City Engineer.
To simplify budgeting, remain closer to the local market value of the position, and increase the likelihood of a successful requirement for a Senior Project Manager, staff are proposing to have both positions at the same pay scale as the existing Deputy City Engineer position (F60).
Staff will note that even with the Senior Project Manager position at this scale the proposed compensation falls short of equivalent salaries offered at other local jurisdictions.
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Economic Resilience The status quo is not sustainable. Generating City revenue is essential to keeping City services and investing in what Fortuna residents want.
Committed Service Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health Priority 2: Our People — Staff Retention, Pay & Succession Priority 5: A Development-Ready City — Permitting, Design & Standards Consent Agenda Item 4k
FISCAL IMPACT:
The proposed departmental changes have no fiscal impact to the budget. There are no proposed changes to salaries for the adjustments to the current Engineering Technician II or Senior Planner position, and the proposed addition/adjustment of the Senior Project Manager position would not exceed what is currently budgeted for the Deputy City Engineer position.
ALTERNATIVES TO STAFF RECOMMENDATIONS:
Council could choose not to approve the proposed revisions to the organizational chart and budget.
However, as noted in the proposed revisions for the Engineering Technician II position and Senior Planner position are intended to align current positions with their expected job duties, reconcile actual organizational structure, and provide further opportunities for employee growth through job requirements. Not approving these proposed changes would continue forward an Ad Hoc departmental operating structure.
For the proposed addition of the Senior Project Manger position, if the salary and job description is not approved as proposed it significantly increases the likelihood that this key position will remain vacant within the organization. Staff will note that the Engineering Division’s workload does not change or scale down based on the number of staff members at any given time, so while these positions remain vacant the work they are conventionally assigned are shifted to other existing positions.
RECOMMENDED COUNCIL ACTION:
Motion to approve the proposed revisions to the City of Fortuna Fiscal Year 2026/27 Organizational Chart and Full-Time Pay Rate Schedule. Consent Agenda vote.
ATTACHMENTS:
• Draft City Organizational Chart
• Draft Full-Time FY26-27 Pay Rate Schedule
City of Fortuna
Organizational Chart
Deputy City Engineer
OR Senior Project Manger (Division Head)
Assistant City
Engineer II
1 FTE
Residents & Businesses of Fortuna
Mayor & City Council
City Manager - 1 FTE City Attorney - Contract
Public Works Director
(Department Head)
1 FTE
Laboratory Director
1 FTE
Senior Admin Assistant /
Deputy City Clerk
1 FTE
City Clerk / Human
Resources Manager
(Department Head)
1 FTE
Payroll / Benefits
Administrator
1 FTE
Finance Office
Supervisor
1 FTE
Accounting
Technician
1 FTE
Finance Director
(Department Head)
1 FTE
Account Clerk II
1 FTE
Community Development
Director / City Engineer
(Department Head)
1 FTE
Senior Planner
(Division Head)
1 FTE
Building Official
1 FTE
Building Inspector
1 FTE
Chief of Police
(Department Head)
1 FTE
Lieutenant
(Division Head)
1 FTE
Sergeant assigned to
Supervise Dispatch
1 FTE
Administrative
Assistant III
1 FTE
Parks & Rec Director
(Funded by Measure E)
(Department Head)
1 FTE
Museum Curator (PT)
.40 FTE
Lead Parks
Maintenance Worker
1 FTE
Parks Maintenance
Worker III
1 FTE
Parks Maintenance
Worker II
4 FTE
Bus Driver II
1 FTE
Conference Center
Worker (PT)
1.06 FTE
Transit Dispatcher /
Office Assistant (PT)
0.51 FTE
Administrative
Assistant II
1 FTE
WWTP Operator III /
Shift Supervisor
1 FTE
WW Chief Plant Operator
(Division Head)
1 FTE
Utility Maintenance
Worker III
2 FTE
Lead Utility Worker
1 FTE
General Services Superintendent (Division Head)
1 FTE
WWTP Operator II
4 FTE
WWTP Operator I /
OIT
1 FTE
Lead Vehicle &
Equipment Mechanic
1 FTE
Vehicle & Equipment
Mechanic
1 FTE
Street Maintenance
Worker III
2 FTE
Street Maintenance
Worker II
3 FTE
Lead Street Maintenance
Worker
1 FTE
Police Officer (Sworn)
9 FTE (1 FTE Frozen)
Police Officer (Sworn) -
Funded by Measure Z
2 FTE
Sergeant (Sworn)
3 FTE
Police Officer (Sworn) -
Funded by Measure E
2 FTE
Administrative
Assistant I (PT)
.67 FTE
Bus Driver I (PT)
1.00 FTE
Code Compliance
Officer (PT) (Funded
by Measure E)
.46 FTE
Police Dispatcher II
5 FTE
Police Dispatcher I
(PT)
.50 FTE
Rec Program Supervisor
(Funded by Measure E)
1 FTE
Recreation Program
Coordinator (PT)
.58 FTE
Recreation Leader
(PT)
3.39 FTE
CSO (Funded by
Measure E)
1 FTE
Community Services
Officer (PT)
.67 FTE (Frozen)
Senior Administrative
Assistant (PW)
1 FTE
Records Clerk (Funded
by Measure E)
1 FTE
Utility Maintenance
Worker II
3 FTE
Facility Custodian
1 FTE
Utilities Superintendent
(Division Head)
1 FTE
Facility Maintenance
Worker III
1 FTE
WWTP Operator III
1 FTE
Account Clerk I
0.48 FTE
Kennel Attendant (PT)
.50 FTE
Senior Administrative
Assistant
1 FTE
FY 2026-27 Full-time Pay Rate Schedule
City of Fortuna
P / R Step Base 4% 4% 4% 4% 4%
Code No. Step 0 Step 1 Step 2 Step 3 Step 4 Step 5
305 Bus Driver II (1) F20 Yr: 38,212.09 39,740.57 41,330.20 42,983.41 44,702.74 46,490.85 320 Facility Custodian (1) Hr: 21.6132 22.4778 23.3769 24.3119 25.2844 26.2958 325 Park Maintenance Worker II (1)
312 Account Clerk II (1) F21 Yr: 39,440.54 41,018.17 42,658.89 44,365.25 46,139.86 47,985.45 326 Street Maintenance Worker II (1) Hr: 22.3080 23.2004 24.1284 25.0935 26.0973 27.1411 334 Records Clerk (2) F22 Yr: 40,604.18 42,228.35 43,917.48 45,674.18 47,501.15 49,401.20 Hr: 19.5213 20.3021 21.1142 21.9588 22.8371 23.7506
338 Administrative Assistant II (1) F23 Yr: 40,286.71 41,898.18 43,574.11 45,317.07 47,129.76 49,014.95 Hr: 22.7867 23.6981 24.6460 25.6319 26.6572 27.7234
313 Recreation Program Supervisor (4) F24 Yr: 40,681.68 42,308.95 44,001.31 45,761.36 47,591.81 49,495.48 Hr: 23.0101 23.9305 24.8877 25.8832 26.9185 27.9952
327 Utility Worker II (1) F25 Yr: 41,371.20 43,026.05 44,747.09 46,536.97 48,398.45 50,334.39 Hr: 23.4000 24.3360 25.3095 26.3219 27.3747 28.4697
350 Community Services Officer II (2) F26 Yr: 43,056.35 44,778.61 46,569.75 48,432.54 50,369.84 52,384.64 351 Police Officer Trainee (2) Hr: 20.7002 21.5282 22.3894 23.2849 24.2163 25.1850 352 Park Maintenance Worker III (1) F27 Yr: 42,472.71 44,171.62 45,938.48 47,776.02 49,687.06 51,674.54 356 Accounting Technician (1) Hr: 24.0231 24.9840 25.9834 27.0227 28.1036 29.2277 353 Street Maintenance Worker III (1) F28 Yr: 43,240.36 44,969.98 46,768.78 48,639.53 50,585.11 52,608.51 365 Treatment Plant Operator I (1) Hr: 24.4573 25.4356 26.4530 27.5111 28.6115 29.7560 367 Administrative Assistant III (2) F29 Yr: 46,309.55 48,161.93 50,088.41 52,091.95 54,175.62 56,342.65 Hr: 22.2643 23.1548 24.0810 25.0443 26.0460 27.0879
354 Utility Worker III (1) F30 Yr: 45,604.74 47,428.93 49,326.08 51,299.13 53,351.09 55,485.14 Hr: 25.7946 26.8264 27.8994 29.0154 30.1760 31.3830
Classification
Adopted By Council at 6-1-26 Meeting (Effective 7-1-26) FY 2026-27 Full-time Pay Rate Schedule
City of Fortuna
P / R Step Base 4% 4% 4% 4% 4%
Code No. Step 0 Step 1 Step 2 Step 3 Step 4 Step 5
Classification
376 Facility Maintenance Worker III (1) F31 Yr: 46,435.03 48,292.43 50,224.13 52,233.09 54,322.42 56,495.32 Hr: 26.2642 27.3148 28.4074 29.5437 30.7254 31.9544
382 Vehicle & Equip Mechanic (1) F32 Yr: 47,265.33 49,155.94 51,122.18 53,167.06 55,293.75 57,505.50 Hr: 26.7338 27.8032 28.9153 30.0719 31.2748 32.5258
370 Treatment Plant Operator II (1) F33 Yr: 47,778.43 49,689.57 51,677.15 53,744.24 55,894.01 58,129.77 Hr: 27.0240 28.1050 29.2292 30.3984 31.6143 32.8789
387 Police Dispatcher II (2) F34 Yr: 51,377.25 53,432.33 55,569.63 57,792.41 60,104.11 62,508.27 Hr: 24.7006 25.6887 26.7162 27.7849 28.8963 30.0521
384 Lead Park Maintenance Worker (1) F35 Yr: 49,890.38 51,886.00 53,961.44 56,119.90 58,364.69 60,699.28 389 Senior Administrative Assistant - CD (1) Hr: 28.2186 29.3473 30.5212 31.7421 33.0118 34.3322 390 Senior Administrative Assistant - PW (1)
375 Conference Center Manager (4) F36 Yr: 50,379.51 52,394.69 54,490.47 56,670.09 58,936.90 61,294.37 391 Sr Administrative Assistant / Deputy City Clerk (3) Hr: 28.4952 29.6351 30.8205 32.0533 33.3354 34.6688 380 Lead Street Maintenance Worker (1) F37 Yr: 50,788.43 52,819.97 54,932.77 57,130.08 59,415.28 61,791.89 400 Building Inspector (1) Hr: 28.7265 29.8756 31.0706 32.3134 33.6060 34.9502 398 Treatment Plant Operator III (1) F38 Yr: 51,979.20 54,058.37 56,220.70 58,469.53 60,808.31 63,240.64 401 Lead Vehicle & Equip Mechanic (1) Hr: 29.4000 30.5760 31.7991 33.0711 34.3939 35.7696 381 Lead Utility Worker (1) F39 Yr: 53,627.69 55,772.80 58,003.71 60,323.86 62,736.82 65,246.29 404 Laboratory Director (1) Hr: 30.3325 31.5458 32.8076 34.1199 35.4847 36.9041 405 Planner II (4) F40 Yr: 54,153.46 56,319.59 58,572.38 60,915.27 63,351.88 65,885.96 Hr: 30.6298 31.8550 33.1292 34.4544 35.8326 37.2659
408 Police Officer (2) F41 Yr: 60,570.89 62,993.73 65,513.48 68,134.02 70,859.38 73,693.75 Hr: 29.1207 30.2855 31.4969 32.7568 34.0671 35.4297
Adopted By Council at 6-1-26 Meeting (Effective 7-1-26) FY 2026-27 Full-time Pay Rate Schedule
City of Fortuna
P / R Step Base 4% 4% 4% 4% 4%
Code No. Step 0 Step 1 Step 2 Step 3 Step 4 Step 5
Classification
403 Treatment Plant Operator III/Shift Supervisor (1) F42 Yr: 56,073.89 58,316.84 60,649.52 63,075.50 65,598.52 68,222.46 Hr: 31.7160 32.9847 34.3041 35.6762 37.1033 38.5874
450 Assistant City Engineer II (4) F43 Yr: 58,235.36 60,564.77 62,987.36 65,506.86 68,127.13 70,852.22 430 Finance Office Supervisor (4) Hr: 32.9386 34.2561 35.6264 37.0514 38.5335 40.0748 432 Payroll/Benefits Administrator (3)
440 Police Sergeant (2) F47 Yr: 73,390.08 76,325.68 79,378.71 82,553.86 85,856.01 89,290.25 Hr: 35.2837 36.6951 38.1629 39.6894 41.2770 42.9281
450 Senior Planner (4) F54 Yr: 71,248.15 74,098.07 77,062.00 80,144.48 83,350.26 86,684.27 458 Building Official (4) Hr: 40.2988 41.9107 43.5872 45.3306 47.1439 49.0296 460 General Services Superintendent (4)
462 Utility Superintendent (4)
463 Chief Treatment Plant Operator (4)
465 Parks and Recreation Director (4)
470 Senior Public Works Project Manager (4) F60 Yr: 79,568.74 82,751.49 86,061.54 89,504.01 93,084.17 96,807.53 480 Deputy City Engineer (4) Hr: 45.0050 46.8052 48.6774 50.6245 52.6495 54.7554 472 Lieutenant (4) F61 Yr: 89,252.62 92,822.73 96,535.64 100,397.06 104,412.94 108,589.46 Hr: 42.9100 44.6264 46.4114 48.2679 50.1986 52.2065
464 City Clerk/Human Resource Manager (5) F65 Yr: 90,753.32 94,383.45 98,158.79 102,085.14 106,168.55 110,415.29 Hr: 51.3311 53.3844 55.5197 57.7405 60.0501 62.4521
487 Community Development Dir/City Engineer(5) F66 Yr: 110,960.16 115,398.57 120,014.51 124,815.09 129,807.69 135,000.00 Hr: 62.7603 65.2707 67.8816 70.5968 73.4207 76.3575
488 Public Works Director (4) F70 Yr: 101,116.76 105,161.43 109,367.89 113,742.60 118,292.31 123,024.00 Hr: 57.1928 59.4805 61.8597 64.3341 66.9075 69.5838
490 Finance Director (5) F72 Yr: 110,480.18 114,899.39 119,495.37 124,275.18 129,246.19 134,416.03 Hr: 62.4888 64.9884 67.5879 70.2914 73.1031 76.0272
Adopted By Council at 6-1-26 Meeting (Effective 7-1-26) Consent Agenda Item 4l
STAFF REPORT
Consent Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and City Council
FROM: Kaylyn Stainbrook, Parks & Recreation Director
SUBJECT: Authorization of Destruction of Selected River Lodge Files, Resolution 2026- 33 STAFF RECOMMENDATION:
Authorize destruction of specific files by approving Resolution 2026-33.
EXECUTIVE SUMMARY:
A review of City files has resulted in the attached lists of files selected for destruction. Files selected for destruction meet the criteria according to California Government Code Section 34090.
State law provides that these records may be destroyed with the approval of the City Council by Resolution and the written consent of the City Attorney. A copy of this staff report was sent to the City Attorney for review and approval.
File destruction information was provided by the following department, and a list of City records scheduled for destruction is attached:
• Parks and Recreation Department | River Lodge Conference Center STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
CORE VALUES:
Clear Direction Consistent decisions based on shared principles that outlast any one leader. Every Council member interviewed named this as essential.
Committed Service Recognition that staff put care into their hard work to provide vital and efficient services, are appreciated by the community, and deserve support.
PRIORITIES:
Priority 1: Clarity, Culture & Capacity for Organizational Health Priority 3: Fiscal Foundation — Revenue, Cost Accounting & Honest Commitments FISCAL IMPACT:
None.
Consent Agenda Item 4l
RECOMMENDED COUNCIL ACTION:
Motion to adopt Resolution 2026-33. Consent Agenda vote.
ATTACHMENTS:
• Resolution 2026-33: A Resolution of the City Council of the City of Fortuna Authorizing the Destruction of Records
• List of files to be destroyed from Parks and Recreation/River Lodge Conference Center Consent Agenda Item 4l
RESOLUTION 2026-33
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF FORTUNA
AUTHORIZING THE DESTRUCTION OF RECORDS
WHEREAS, the City of Fortuna staff has determined that certain records are no longer needed for the operation of business, nor required by statute; and WHEREAS, California Government Code 34090 authorizes the destruction of City records upon approval of the City Council by resolution and written approval by the City Attorney.
NOW THEREFORE, BE IT RESOLVED that the City Council of the City of Fortuna hereby declares the attached City records to be no longer needed and may therefore be destroyed; and BE IT FURTHER RESOLVED that the City Attorney of the City of Fortuna hereby approves the destruction of the attached City records.
PASSED AND ADOPTED, on the 21st day of September 2026, by the following vote:
AYES:
NOES:
ABSTAIN:
ABSENT:
APPROVED:
Ryan Plotz, City Attorney Mike Johnson, Mayor
ATTEST:
Siana L. Emmons, City Clerk
File Destruction
Parks and Recreation Department
September 2026
The following Parks and Recreation (River Lodge) records are submitted for destruction:
Files older than and up to FY 2019-2020:
A/P Invoice Copies
A/R Billing Invoices
Cash Receipts
Bank Deposit Books
Cash Receipt Books
Cash Receipts by Detail
PO Requisition Books
Check Copies
Facility Use Contracts
Facility Use Applications
Facility Use Diagrams
Facility Use Insurance Certificates
Personnel Records (Copies)
Federal & State Tax (1096, 1099, W-4 & W-2’s)
Reviewed by: ____________________________________________ Aaron Felmlee – Finance Director
Approved by:________________________________________________________________ Amy Nilsen – City Manager
Business Agenda Item 5a
STAFF REPORT
Business Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and Council Members
FROM: Matthew Eberhardt, Interim Chief of Police
THROUGH: Amy Nilsen, City Manager
SUBJECT: Second Reading and Adoption of Ordinance 2026-788, Adding Chapter 5.30 to the Fortuna Municipal Code Regulating Massage Establishments STAFF RECOMMENDATION:
Second reading and adoption, by title only, of Ordinance 2026-788, adding Chapter 5.30 to the Fortuna Municipal Code to establish registration, operating, inspection, and enforcement requirements for massage establishments operating within the City of Fortuna.
EXECUTIVE SUMMARY:
The Police Department is requesting that the City Council consider adopting a new chapter of the Fortuna Municipal Code regulating massage establishments operating within the City.
Massage establishments are lawful businesses that provide legitimate therapeutic, health, and wellness services. However, massage businesses may also be used to facilitate prostitution, human trafficking, sexual exploitation, controlled-substance activity, and other unlawful conduct when adequate operating standards and regulatory oversight are not in place.
California law provides for certification and oversight of massage professionals through the California Massage Therapy Council, commonly referred to as CAMTC. State law also preserves the authority of local governments to regulate massage establishments, business operations, and land uses in a manner consistent with state law.
The proposed ordinance would establish a local registration program for massage establishments, require background investigations and registration certificates for certain owners, operators, managers, and non-CAMTC massage professionals, and establish minimum operating, sanitation, identification, and facility requirements.
The ordinance would also authorize the Chief of Police to deny, refuse to renew, suspend, or revoke a massage establishment registration when qualifying violations occur. The proposed ordinance includes notice, hearing, and appeal procedures intended to provide due process to affected applicants and businesses.
Business Agenda Item 5a
DISCUSSION:
The Fortuna Municipal Code does not currently contain a comprehensive regulatory chapter governing massage establishments. While massage establishments are lawful businesses that provide legitimate therapeutic and wellness services, the City identified the need for local operating standards and enforcement authority following a recent investigation involving a local massage establishment. The proposed ordinance is intended to provide the City with appropriate regulatory tools to address businesses used to facilitate unlawful activity while supporting legitimate massage establishments.
The proposed ordinance establishes a local registration program for massage establishments operating within the City while recognizing the State's authority over CAMTC-certified massage professionals.
It also establishes minimum operating, sanitation, inspection, and identification requirements intended to protect public health, safety, and welfare while supporting legitimate massage businesses.
The ordinance authorizes the Chief of Police to deny, refuse to renew, suspend, or revoke a massage establishment registration when specified violations occur. It also establishes notice and appeal procedures to ensure due process while providing the City with appropriate administrative enforcement authority.
In addition to administrative enforcement, the ordinance provides civil, criminal, and nuisanceabatement remedies for violations and authorizes administrative inspections to ensure compliance with the chapter.
Overall, the proposed ordinance provides the City with a clear regulatory framework for massage establishments while balancing public safety, legitimate business operations, and procedural due process.
STRATEGIC PLAN 2026-2036:
This action supports the following area(s) of your City Council’s Strategic Plan 2026-2036.
Core Values:
Quality of Life: Family, Nature & Neighbors – Safety, family life, care for youth, cleanliness, parks, forests, and rivers. Fortuna's #1 value across every instrument and generation in this process.
Priorities:
Priority 1: Clarity, Culture & Capacity for Organizational Health FISCAL IMPACT:
No fiscal impacts are anticipated. Administration and enforcement of the proposed ordinance can be accomplished within the City’s existing adopted budget. Once the administrative costs associated with the registration program are known, the City Council may consider establishing registration fees by resolution to offset those costs.
Business Agenda Item 5a
ALTERNATIVES TO STAFF RECOMMENDATION:
1. Deny the proposed ordinance amendment – Not recommended.
Denial would maintain the current Municipal Code without comprehensive massage establishment registration, operating, inspection, suspension, revocation, and appeal procedures. The City would continue to have limited local regulatory tools specifically addressing massage establishments and related unlawful activity.
2. Continue and provide direction – Not recommended.
While the City Council may continue the item and direct staff regarding additional revisions, doing so would delay implementation of the proposed regulatory framework. Staff believe timely adoption is appropriate given the City’s recent need for clearer local regulatory authority over massage establishments.
RECOMMENDED COUNCIL ACTION:
1. Receive staff report and review questions with staff;
2. Open Public Comment
3. Close Public Comment
4. Motion to conduct second reading and adopt Ordinance 2026-788, read by title. Roll Call vote.
ATTACHMENTS:
Ordinance 2026-788, An Ordinance of the City Council of the City of Fortuna Adding Chapter
5.30 to Article 5 of the Fortuna Municipal Code Regulating Massage Establishments 1 ORDINANCE 2026-788
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF FORTUNA ADDING CHAPTER 5.30 TO ARTICLE 5 OF THE FORTUNA MUNICIPAL CODE
REGULATING MASSAGE ESTABLISHMENTS
WHEREAS, massage establishments are lawful businesses that provide legitimate therapeutic, health, and wellness services when operated in compliance with state and local law; and WHEREAS, the State of California, through the Massage Therapy Act, Business and Professions Code Section 4600 et seq., has established statewide certification and oversight of massage professionals through the California Massage Therapy Council; and WHEREAS, the Massage Therapy Act recognizes that local governments retain broad control over land use and massage establishments so that local agencies may regulate such establishments in the best interests of the individual community; and
WHEREAS, the Massage Therapy Act recognizes local authority to regulate massage establishments and expressly encourages local governments to consider a registration program that permits suspension or revocation of a massage business registration for specific violations; and WHEREAS, the City Council finds that local regulation of massage establishments is necessary to protect the public health, safety, and welfare; to ensure minimum sanitation, facility, and operational standards; to assist law enforcement and code enforcement in distinguishing lawful massage businesses from businesses used for unlawful activity; to prevent sexual exploitation, human trafficking, prostitution, and related criminal conduct; and to protect legitimate massage professionals and massage businesses from unfair association with unlawful conduct; and WHEREAS, the City Council intends this ordinance to be interpreted and applied consistently with the Massage Therapy Act and does not intend to regulate California Massage Therapy Council certification, impose duplicative professional licensing requirements on California Massage Therapy Council-certified massage professionals, or prohibit lawful massage services provided by properly certified professionals in compliance with state law; and WHEREAS, this ordinance regulates massage establishments and business operations within the City pursuant to the City's police power and local business-regulatory authority.
NOW THEREFORE, THE CITY COUNCIL OF THE CITY OF FORTUNA FINDS AND ORDAINS AS FOLLOWS:
SECTION 1. The above recitals are all true and correct and are hereby adopted as findings of the City Council.
SECTION 2. AMENDMENT TO MUNICIPAL CODE. The Fortuna Municipal Code is hereby amended to add Chapter 5.30 to Article 5, entitled "Massage Establishments," as set forth in Attachment A, attached hereto and incorporated herein by this reference.
SECTION 3. CEQA DETERMINATION. This Ordinance has been reviewed for compliance with the California Environmental Quality Act (CEQA), and the CEQA Guidelines, and has been found to be exempt pursuant to Section 15061(b)(3) (general rule) of the CEQA Guidelines, because the 2 City Council hereby finds with certainty that there is no possibility the passage of this Ordinance will have a significant effect on the environment.
SECTION 4. SEVERABILITY. If any part of this Ordinance is held to be invalid or inapplicable to any situation by a court of competent jurisdiction, such decision will not affect the validity of the remaining portions of this Ordinance or the applicability of this Ordinance to other situations.
SECTION 5. PUBLICATION. The City Clerk shall cause this Ordinance to be published in a newspaper of general circulation in Humboldt County once within 15 days of its adoption in accordance with the requirements of Government Code Section 36933.
SECTION 6. EFFECTIVE DATE. This Ordinance will be effective 30 days after the date of its adoption by the City Council.
INTRODUCED ON FIRST READING by the City Council of the City of Fortuna on the 8th day of September 2026 by the following vote:
AYES:
NOES:
ABSENT:
ABSTAIN:
________________________________
Mike Johnson, Mayor
ATTEST:
________________________________
Buffy Gray, Deputy City Clerk
SECOND READING AND ADOPTION by the City Council of the City of Fortuna on the 5th day of October 2026 by the following vote:
AYES:
NOES:
ABSENT:
ABSTAIN:
________________________________
Mike Johnson, Mayor
ATTEST:
________________________________
Siana L. Emmons, City Clerk
3 ATTACHMENT A
CHAPTER 5.30 MASSAGE ESTABLISHMENTS.
5.30.010 DEFINITIONS.
The following words and phrases, whenever used in this chapter, are defined as follows:
A. "Adult-oriented merchandise" means any sexually-oriented implements, paraphernalia, or novelty items such as, but not limited to, condoms and items that are designed or marketed primarily for the stimulation of human genital organs.
B. "CAMTC" means the California Massage Therapy Council.
C. "Employee" means any owner, partner, operator, manager, supervisor, worker, employee, independent contractor, or other person, whether paid or unpaid, who manages or operates a massage establishment, renders personal services of any nature in the operation of a massage establishment, or performs massage on behalf of a massage professional or massage establishment.
D. "Genitals" means the parts of the human anatomy including the pubic area, anus, or perineum and the breasts of any female.
E. "Massage" means the manipulation of soft body tissues. For purposes of this definition, "massage" and "massage therapy" shall have the same meaning.
F. "Massage establishment" means a fixed location where massage for compensation is provided on a regular or routine basis by a massage professional, including the home of a massage professional if massage for compensation is provided from the home pursuant to any home occupation permit or other approval required by the Fortuna Municipal Code.
G. "Massage for compensation" means the provision of massage for consideration of any kind, whether monetary or otherwise, regardless of whether the consideration is provided before or after completion of the massage.
H. "Massage professional" means any person who provides massage services to another person for compensation.
I. "Operator" means any person who is an owner or otherwise leases, manages, or controls a massage establishment, or who directs the occupation of a massage professional or receives a share of the compensation of a massage professional.
J. "Owner" means any living person or persons, firm, joint venture, association, co-partnership, limited partnership, general partnership, corporation, limited liability company, or any combination thereof, who has any interest, legal or equitable, in any massage establishment.
K. "Person" means any individual, partnership, firm, association, joint stock company, corporation, limited liability company, joint venture, or combination of individuals of whatever form or character.
4 L. "Individual registration certificate" means a written or electronic certificate issued by the Fortuna Police Department confirming that an individual has satisfactorily completed the background investigation required by Section 5.30.020(C).
M. "Massage establishment registration" means the written authorization issued by the Chief of Police pursuant to this chapter to operate a massage establishment at a particular location.
N. "Registrant" means the person or entity to whom a current massage establishment registration has been issued.
5.30.015 CONSISTENCY WITH STATE LAW.
This chapter shall be interpreted and applied consistently with the Massage Therapy Act, Business and Professions Code Section 4600 et seq. Nothing in this chapter shall be construed to regulate the issuance, denial, suspension, or revocation of a CAMTC certificate, or to impose a duplicative local professional licensing requirement on a massage professional holding a valid CAMTC certificate. The massage establishment registration required by this chapter regulates the operation and location of a massage business and does not constitute certification of an individual's professional qualifications.
5.30.016 MASSAGE ESTABLISHMENT REGISTRATION REQUIRED.
A. No person shall own, operate, manage, conduct, carry on, or permit the operation of a massage establishment within the City unless a current massage establishment registration has been issued for the owner and location and the establishment has obtained all other business licenses, land use approvals, and permits required by law.
B. A separate massage establishment registration is required for each location. A registration is nontransferable as to the registrant and location. A new registration shall be obtained before any change in ownership or controlling interest or before relocation of the establishment. The registrant shall notify the Chief of Police in writing within ten business days of any change in an operator or manager, and each new owner, operator, or manager shall satisfy the requirements of this chapter before acting in that capacity.
C. An application for issuance or renewal shall be submitted to the Chief of Police on a form approved by the City and shall include the legal and fictitious business names, the establishment address, the names and contact information of all owners, operators, and managers, documentation of compliance with Section 5.30.020(C), a current list of persons who will provide massage and their CAMTC certificate or individual registration certificate information, evidence of all other required City approvals, and any other information reasonably necessary to administer this chapter. The City Council may establish by resolution an application or renewal fee that does not exceed the reasonable cost of administering the registration program.
D. The Chief of Police shall issue or renew a massage establishment registration unless a ground for denial, refusal to renew, suspension, or revocation exists under Section 5.30.017. A registration shall expire one year after issuance unless a different annual expiration date is established administratively. A complete renewal application shall be filed at least thirty days 5 before expiration. A timely renewal application shall extend the existing registration until a final decision is issued, unless the City has issued an emergency suspension or a notice proposing suspension or revocation before the renewal application was filed.
E. The massage establishment registration shall be conspicuously displayed at the registered location and shall be produced upon request by a City official authorized to enforce this chapter.
F. A massage establishment lawfully operating on the effective date of this chapter shall apply for a massage establishment registration within ninety days after the City makes application forms available. The establishment may continue operating during that period and while a timely, complete application is pending, unless otherwise prohibited by law or subject to an emergency suspension under Section 5.30.018.
5.30.017 DENIAL, REFUSAL TO RENEW, SUSPENSION, OR REVOCATION.
A. The Chief of Police may deny an application, refuse to renew a registration, or suspend or revoke a massage establishment registration upon a finding, by a preponderance of the evidence, of one or more of the following:
1. The application contains a material false statement, misrepresentation, or omission, or the registration was issued in error.
2. The applicant, registrant, owner, operator, or manager does not satisfy a requirement of this chapter, including the background investigation requirements of Section 5.30.020(C), or is subject to a disqualification identified in Section 5.30.020(D).
3. The establishment, premises, applicant, or registrant is not in compliance with this chapter or with an applicable business license, zoning, building, fire, health, safety, or other legal requirement.
4. The registrant, an owner, operator, manager, employee, or other person acting for or on behalf of the establishment has violated this chapter or a law substantially related to the operation of a massage establishment. When the conduct is that of an employee or other person who is not an owner, operator, or manager, disciplinary action against the establishment shall require evidence that an owner, operator, or manager participated in the conduct, knew or reasonably should have known of the conduct and failed to take reasonable preventive or corrective action, or failed to exercise reasonable supervision of the establishment.
5. The establishment has been used to facilitate prostitution, solicitation of prostitution, human trafficking, pimping, pandering, sexual conduct for compensation, lewd conduct, unlawful controlled-substance activity, or other criminal activity substantially related to the operation of a massage establishment, and an owner, operator, or manager participated in the activity, knew or reasonably should have known of the activity and failed to take reasonable preventive or corrective action, or failed to exercise reasonable supervision of the establishment. A criminal conviction is not required for an administrative action under this paragraph.
6 6. The registrant or a person acting on the registrant's behalf has refused or materially interfered with an inspection authorized by this chapter, failed to comply with a lawful corrective order, or failed to pay a final administrative, civil, or criminal fine or penalty arising from operation of the establishment.
7. The establishment is being operated as a public nuisance or in a manner that presents a substantial threat to public health, safety, or welfare.
B. In determining the appropriate action, the Chief of Police shall consider the nature and seriousness of the conduct, whether the conduct was isolated or repeated, the registrant's knowledge and degree of responsibility, prior violations, corrective measures taken, and the need to protect the public. A suspension shall be for a period reasonably related to the violation and shall not exceed ninety days. Repeated or serious violations may support revocation without a prior suspension.
C. A person shall not operate, advertise, or hold out a massage establishment as authorized to operate while its registration is suspended or revoked, or after an application or renewal has been finally denied. The Finance Department shall not issue or renew a business license authorizing operation of a massage establishment unless the establishment has a current massage establishment registration or a timely application that permits continued operation under Section 5.30.016(D) or (F).
5.30.018 NOTICE, HEARING, AND APPEAL.
A. Except as provided in subsection E, before denying or refusing to renew a registration or suspending or revoking a registration, the Chief of Police shall provide written notice of the proposed decision. The notice shall state the action proposed, the factual and legal grounds for the action, the proposed effective date, and the time and manner for requesting an appeal. The proposed effective date shall be no less than fifteen calendar days after service of the notice.
B. The applicant or registrant may appeal by filing a written request with the City Clerk within fifteen calendar days after service of the notice. The request shall identify the decision being appealed and the grounds for appeal. A timely appeal of a refusal to renew, suspension, or revocation shall stay the proposed action until a final administrative decision is issued, except for an emergency suspension under subsection E. An appeal of an initial denial does not authorize operation while the appeal is pending.
C. The City Manager shall hear the appeal or designate an impartial hearing officer who did not participate in the initial decision. The hearing shall be held within thirty calendar days after the appeal is filed unless continued for good cause. The City shall provide at least ten calendar days' written notice of the hearing. The appellant may be represented by counsel, present testimony and documentary evidence, and respond to evidence offered in support of the proposed action.
D. The appeal shall be heard de novo. The technical rules of evidence shall not apply, but the decision shall be based on reliable evidence of the type on which reasonable persons rely in the conduct of serious affairs. The City bears the burden of establishing grounds for the action by a preponderance of the evidence. The hearing officer shall issue a written decision, 7 including findings and the effective date of any action, within fifteen calendar days after the hearing is closed. The decision is final.
E. The Chief of Police may immediately suspend a massage establishment registration when there are reasonable grounds to believe that continued operation presents an immediate threat to public health or safety, or that prostitution, human trafficking, sexual conduct for compensation, or comparably serious criminal activity is ongoing at or through the establishment. Written notice stating the grounds and appeal rights shall be served no later than the next business day. The registrant may request an expedited appeal within five business days after service, and the hearing shall be held within ten business days after the request unless the registrant agrees to a later date. The emergency suspension shall remain in effect until modified or dissolved by the Chief of Police or the hearing officer.
F. A notice or decision under this section may be personally delivered or sent by first-class mail and by any electronic address provided by the applicant or registrant. Service by mail is complete at the time of deposit in the United States mail. Failure to receive a properly addressed notice does not invalidate the proceeding.
G. A final decision under this section is subject to judicial review under Code of Civil Procedure Sections 1094.5 and 1094.6. The final written decision shall advise the appellant that the time for seeking judicial review is governed by Code of Civil Procedure Section 1094.6.
5.30.020 OPERATING REQUIREMENTS.
No person, owner, or operator shall engage in, conduct, carry on, or permit any massage unless all of the following requirements are met:
A. Except when permitted in writing by the Chief of Police, massage shall be provided or given only between the hours of 7:00 a.m. and 10:00 p.m. A massage commenced prior to 10:00 p.m. must terminate at 10:00 p.m., and, in the case of a massage establishment, all clients shall exit the premises at that time.
B. No person who has not reached eighteen years of age shall provide massage for compensation.
C. Massage shall not be provided by any person not certified by the CAMTC unless the individual holds a current individual registration certificate issued by the Fortuna Police Department following an approved background investigation. No person shall act as an owner or operator of a massage establishment unless the individual holds a current individual registration certificate. This requirement shall be applied in a manner consistent with Business and Professions Code Section 4603.1 and shall not be construed to impose a duplicative local professional licensing requirement on a massage professional holding a valid CAMTC certificate.
1. The Fortuna Police Department shall issue an individual registration certificate, in paper or electronic form, to indicate satisfactory compliance with the requirements of this section.
The Department shall maintain a record of the certificate's status. The certificate need not contain a photograph and is not required to be worn or carried on the person. 8 2. The Fortuna Police Department is authorized to issue a temporary individual registration certificate without the requirement of a background check to any massage therapist who has completed a course of study and has applied for certification by the CAMTC. The temporary certificate shall not exceed six months in duration.
3. At all times while on the premises of a massage establishment, each person required to hold an individual registration certificate shall, upon demand, provide the certificate, a copy of the certificate, or sufficient information for the Fortuna Police Department to confirm that the certificate is current. A copy may be maintained at the massage establishment in lieu of being carried by the individual.
D. No person who has not been certified by the CAMTC shall provide massage for compensation or act as an employee of a massage business if such person has:
1. Been convicted of, or entered a plea of guilty or no contest to, an offense that requires registration under the Sex Offender Registration Act, Penal Code Section 290 et seq., or which is a violation of Penal Code Sections 261, 261.5, 261.9, 262, 264.1, 265, 266, 266a, 266b, 266c, 266d, 266e, 266f, 266g, 266h, 266i, 266j, 267, 269, 285, 288, 288.2, 288.3, 288.4, 288.5, 288.7, 289, 289.5, 289.6, 311.1, 311.2, 311.3, 311.4, 311.5, 311.6, 311.10, 311.11, 311.12, 313.1, 314, 315, 316, 318, or 647(a) or (b), or equivalent offenses under the laws of another jurisdiction, even if expunged pursuant to Penal Code Section 1203.4 or equivalent statute under the laws of another jurisdiction.
2. Been convicted of, or entered a plea of guilty or no contest to, an offense involving the sale, possession for purposes of sale, purchase for the purpose of sale, transport, import, export, administration, gift, or cultivation of a controlled substance specified in Health and Safety Code Sections 11054 through 11058, inclusive, or equivalent offenses under the laws of another jurisdiction, even if expunged pursuant to Penal Code Section 1203.4 or equivalent statute under the laws of another jurisdiction.
3. Been convicted of, or entered a plea of guilty or no contest to, a violation of Penal Code Section 415 as a result of being charged with a violation of Penal Code Section 647(a) or (b).
4. Been convicted of any state or federal law relating to the trafficking of humans for the purpose of labor or sex.
5. Suffered revocation or suspension of a certificate issued under the Massage Therapy Act, Business and Professions Code Section 4600 et seq., unless such certificate has been restored.
6. Been found liable by means of the procedures set forth in Chapter 1.09 of the Fortuna Municipal Code, or any other applicable administrative enforcement procedure, for violating any provision of this chapter, except when such finding of liability is pending appeal or review in a court of competent jurisdiction.
E. Massage establishments shall at all times be equipped with an adequate supply of clean sanitary towels, coverings, and linens. Towels and linens shall not be used on more than one client 9 unless they have first been laundered and disinfected. Disposable towels and coverings shall not be used on more than one client.
F. Wet and dry heat rooms, steam or vapor rooms or cabinets, toilet rooms, shower and bath rooms, tanning booths, whirlpool baths, and pools located at massage establishments shall be cleaned and disinfected at least once each day when such facilities have been in use.
G. All instruments used in massage shall be maintained in a clean and sanitary condition.
Instruments utilized in providing massage shall not be used on more than one client unless they have been sterilized or sanitized.
H. No dressing room shall be occupied by more than one person at a time except where occupation is by a parent or legal guardian to a child then present or when the presence of an individual necessary to accommodate a disability is required.
I. No room where massage is provided shall be occupied by a person other than the client and massage professional except where occupation is by a caregiver, parent or legal guardian to a child then present, when the presence of an individual necessary to accommodate a disability is required, or massage is provided to a couple.
J. Toilet facilities shall be provided in convenient locations within the massage establishment and shall consist of at least one unisex toilet with a lavatory or wash basin provided with soap and both hot and cold running water.
K. No alcoholic beverages or controlled substances, as defined in Health and Safety Code Sections 11054 through 11058, inclusive, or in the Controlled Substances Act, shall be sold, served, furnished, kept, consumed, or possessed on the premises of any massage establishment except as otherwise permitted by law.
L. All massage professionals and employees of massage establishments shall wear clean, nontransparent outer garments while engaged in massage for compensation, to the extent this requirement is consistent with Business and Professions Code Section 4609 and Government Code Section 51034. Such garments shall not expose the genitals, pubic areas, buttocks, or chest and shall not be worn in such manner as to expose the genitals, pubic areas, buttocks, or chest. For purposes of this section, outer garments means a garment worn over other garments and does not include garments like underwear, bras, lingerie, or swimsuits.
M. No massage for compensation shall be provided unless the client's genitals are at all times fully covered. While engaged in massage for compensation, a massage professional shall not make, or offer to make, physical contact with the genitals of any other person regardless of whether the contact is over or under the person's clothing, nor shall the massage professional permit, or offer to permit, the client to make physical contact with the genitals of the massage professional regardless of whether the contact is over or under the massage professional's clothing.
1. Notwithstanding the foregoing, massage of the female breasts by the massage professional is permissible with the written consent of the client and delivery to the massage professional by the client of a written referral from a licensed health care provider. 10 N. Except when massage is provided pursuant to a home occupation authorized by the Fortuna Municipal Code, no adult-oriented merchandise or material which depicts the human genitals shall be kept at a massage establishment. In the case of an authorized home occupation, adultoriented merchandise or material depicting human genitals shall be kept away from the possession and view of the client.
O. Except where a home occupation is permitted under the Fortuna Municipal Code, no massage professional or employee, excluding custodial or janitorial staff, shall occupy a massage establishment from the hours of 11:00 p.m. through 6:00 a.m.
P. A massage professional shall operate only under the name reflected on the CAMTC certificate or individual registration certificate applicable to that person. A massage establishment shall operate only under the name specified on its massage establishment registration and business license.
Q. No person may advertise to provide massage for compensation in a state of undress which violates subdivisions L or M of this section.
5.30.030 PROVISIONS APPLICABLE TO LOCATION.
No person shall provide massage, operate a massage establishment, or provide property for the operation of a massage establishment at a particular location if:
A. Another massage establishment is or was operating at that particular location within the prior thirty-six months and that massage establishment or any employee of that massage establishment has been found liable by means of the procedures set forth in Chapter 1.09 of the Fortuna Municipal Code, or any other applicable administrative enforcement procedure, for violating any provision of this chapter, except when such finding of liability is pending appeal or review in a court of competent jurisdiction, or if the massage establishment or an employee of that massage establishment has been found guilty of a violation of this chapter or any of the statutes specifically referenced in Section 5.30.020(D). For purposes of this section, a plea of no contest is a finding of guilt.
B. Another massage establishment is or was operating at that particular location within the prior thirty-six months and that massage business has outstanding unpaid fines or penalties, whether criminal, administrative, or civil.
5.30.040 INSPECTION.
A. All persons providing massage and massage establishment owners and operators shall, during permissible hours of operation, have on their person or immediately available at the massage establishment a valid, government-issued identification which identifies the individual.
B. For the sole purpose of inspecting and verifying compliance with this chapter and otherwise facilitating the functions of this chapter, the City Manager, or his or her designee, and the Chief of Police, or his or her designee, are authorized to enter massage establishments to conduct administrative inspections thereof, and of the things specified in this section, relevant to those functions.
11 C. Prior to inspection, City personnel shall inform those present at the massage establishment that inspection is made pursuant to this chapter.
D. All massage establishments shall submit to regular administrative inspections between the hours of 7:00 a.m. and 10:00 p.m.
5.30.050 EXEMPTIONS.
The provisions of this chapter shall not apply to the following classes of individuals or businesses while engaged in the performance of their duties:
A. Physicians, surgeons, chiropractors, osteopaths, nurses, physical therapists, occupational therapists, or other health care professionals who are duly licensed to practice their respective professions in the State of California, and persons working directly under the supervision of, or at the direction of, such licensed persons, working at the same location as the licensed person and administering massage services subject to the review or oversight by the licensed person.
B. Barbers, cosmetologists, estheticians, manicurists, and beauticians who are duly licensed under the laws of the State of California while engaging in practices within the scope of their licenses, except that this provision shall apply solely to massage or manipulation authorized within the scope of such license.
C. Hospitals, nursing homes, mental health facilities, clinics, or any other health facilities duly licensed by the State of California, and employees of these licensed facilities while acting in the scope of their employment.
D. Accredited elementary schools, middle schools, high schools, junior colleges, colleges, and universities whose coaches or trainers are acting within the scope of their employment.
E. Youth and adult sport programs operated within an organized sport program offering league play whose coaches or trainers are acting within the scope of their employment.
F. Martial arts programs operated for instruction in the martial arts whose coaches or trainers are acting within the scope of their employment.
G. Trainers of amateur, semi-professional, or professional athletes or athletic teams while engaged in their training responsibility for and with athletes and trainers working in conjunction with a specific athletic event.
H. Individuals administering massages or health treatment involving massage to persons participating in single-occurrence athletic, recreational, charitable, or festival events, such as health fairs, road races, track meets, triathlons, and other similar events, provided that all of the following conditions are met:
1. The massage services are made equally available to all participants in the event;
2. The event is open to participation by the general public or a significant segment of the public; and
12 3. The massage services are provided at the site of the event and either during, immediately preceding, or immediately following the event.
I. Students of a licensed school of massage while engaged in massage therapy as part of the curriculum when under the direct supervision of a massage professional certified by the CAMTC or a massage professional fully compliant with all provisions set forth in this chapter.
5.30.060 ENFORCEMENT, PENALTIES, AND NUISANCE PER SE.
A. The City Attorney is authorized to file a civil action to recover civil penalties in an amount not to exceed one thousand dollars per violation and to take any other action in law or equity which he or she may deem necessary in order to enforce this chapter.
B. This chapter may be enforced by means of administrative citations issued in accordance with Chapter 1.09 of the Fortuna Municipal Code. Administrative penalties shall be in an amount authorized by Chapter 1.09 or other applicable law.
C. This chapter is cumulative to all other remedies now or hereafter available to abate or otherwise regulate, enforce, or prevent public nuisances or to enforce the provisions of the Fortuna Municipal Code.
D. Each violation of this chapter shall constitute a separate violation. Each client to whom massage is provided or offered in violation of this chapter shall also constitute a separate violation.
E. A violation of any provision of this chapter constitutes a public nuisance. The City may require abatement of such nuisance and recover costs of abatement as provided by law, including pursuant to Section 8.16.060 et seq. of the Fortuna Municipal Code.
F. Any person violating this chapter is guilty of a misdemeanor and, upon conviction thereof, may be punished by a term in the county jail of up to six months or by a fine of one thousand dollars, or both.
G. Operation of a massage establishment without a current massage establishment registration, or during a suspension or after a final denial or revocation, is unlawful. Each day of operation constitutes a separate violation. In addition to any other remedy, the City may issue an order to cease operation and may seek temporary, preliminary, or permanent injunctive relief.
5.30.070 JOINT AND SEVERAL LIABILITY.
All responsible persons, including owners, operators, managers, and persons who cause, permit, aid, abet, suffer, or maintain a violation of this chapter, shall be jointly and severally liable for violations of any provision set forth in this chapter.
Business Agenda Item 5b
STAFF REPORT
Business Agenda Item
DATE: September 21, 2026
TO: Honorable Mayor and Council Members
FROM: Brian Issa, Public Works Director
THROUGH: Amy Nilsen, City Manager
SUBJECT: Approval of Amendments No. 5 and No. 6 to the Engineering Services Agreement with Jacobs for the Wastewater Treatment Plant NPDES Compliance Project
STAFF RECOMMENDATION:
Approve Amendment No. 5 in the amount of $442,000 and Amendment No. 6 in the amount of $2,539,015 to the Engineering Services Agreement with Jacobs Engineering Group for additional final design, bid-phase services, and construction/implementation of the Wastewater Treatment Plant National Pollutant Discharge Elimination System (NPDES) Compliance Project’s Supervisory Control and Data Acquisition (SCADA) component; authorize the Public Works Director to execute the amendments; and find that sufficient appropriations are available in the current fiscal year wastewater capital budget. Approval of Amendment No. 5 authorizes additional professional services for the main project. Approval of Amendment No. 6 authorizes Jacobs to implement the SCADA portion of the project, including purchase and programming of hardware and related tasks described in the attached amendment; however, the City will contract directly with an electrician for electrical installation work. This action does not authorize advertisement for bids or award of construction contracts for the main treatment plant improvements, and it does not commit the City to a final project financing package.
EXECUTIVE SUMMARY:
The City entered into an engineering services agreement with Jacobs Engineering Group in December 2020 for planning, design, permitting, and implementation support for the Wastewater Treatment Plant National Pollutant Discharge Elimination System (NPDES) Compliance Project.
Since then, the project has advanced through project definition, alternatives analysis, environmental and permitting coordination, detailed design, and development of a State Revolving Fund (SRF) funding application. As the work progressed, the City gained a clearer understanding of the treatment, operational, and funding requirements needed to deliver a reliable compliance project.
The agreement and amendment history is summarized below:
Action Date Change Total Primary purpose
Initial contract Dec. 2, 2020 $2,860,759 $2,860,759 Planning, design, permitting, and implementation support.
Business Agenda Item 5b
Action Date Change Total Primary purpose
Amendment No. 1 Sept. 15, 2023 $0 $2,860,759 No-cost scope amendment.
Amendment No. 2 Jan. 10, 2024 $0 $2,860,759 No-cost scope amendment.
Amendment No. 3 Mar. 12, 2025 $1,889,222 $4,749,981 Additional services for the revised treatment-focused project design.
Amendment No. 4 Mar. 31, 2026 $409,821 $5,159,802 Final design of the SCADA component.
Amendment No. 5 Sept. 14, 2026 $442,000 $5,601,802 Complete main-project final design and provide bidphase services.
Amendment No. 6 Sept. 14, 2026 $2,539,015 $8,140,817
Construct/implement the SCADA and operational
technology component, including hardware purchase,
programming, testing, commissioning, and related
tasks.
Amendments No. 5 and No. 6 provide the remaining main-project and SCADA implementation services now before Council.
The original project concept focused on replacing summer use of the existing percolation ponds with a new land-application system west of the Eel River. That concept included conveying treated effluent across the river for summer application. As project development and regulatory coordination progressed, preliminary feedback from North Coast Regional Water Quality Control Board staff indicated that land application could raise concerns similar to those associated with the existing percolation ponds and might not provide a durable permitting solution. The City therefore discontinued the west-side land-application concept and refocused the project on treatment improvements at the wastewater treatment plant. The revised project is a broader treatment plant modernization effort focused on reducing nitrogen and improving process reliability. The current design includes automated flow equalization, new biological treatment and aeration facilities capable of nitrification and denitrification, blower and pumping improvements, chemical and electrical improvements, chemical storage and feed rehabilitation, and modernization of plant controls. This change in direction is a principal reason the current scope and budget differ from the original planning concept: resources previously directed toward an alternative disposal system were redirected to treatment-process improvements that reduce nitrogen loading and support the City’s long-term permitting strategy.
During design, the existing SCADA system was identified as a significant operational vulnerability because of aging and obsolete components, limited redundancy, and the risk that a failure could disrupt the City’s ability to monitor and control treatment processes. SCADA is the system operators rely on to monitor, automate, and control all plant functions. The City therefore separated the SCADA component from the larger NPDES project construction package so that the controls work could proceed on an accelerated schedule while remaining an integrated part of the overall NPDES Compliance Project and compatible with the planned treatment plant improvements. This approach is intended to allow the new controls system to be integrated with the future facility improvements when construction of the new facilities is complete.
Amendment No. 5 provides the additional engineering effort needed to complete final design of the main NPDES Compliance Project, address design refinements, support the State funding application, and provide bid-phase services. Amendment No. 6 authorizes construction/implementation of the SCADA component of the NPDES Compliance Project, including purchase and programming of hardware, controls programming, programmable logic controller replacement, operational technology and communications improvements, construction coordination, testing, commissioning, documentation, operator training, and other related tasks Business Agenda Item 5b
described in the attached amendment. The City will contract directly with an electrician for electrical installation work rather than routing that work through Jacobs, avoiding Jacobs markup on the electrical subcontractor’s work.
The regulatory context has also changed. North Coast Regional Water Quality Control Board NPDES staff have indicated that the City’s supplemental technical work and proposed denitrification upgrades may support a Low Threat Discharge designation in the City’s next permit. In practical terms, this designation could provide a more achievable permitting path and may reduce future regulatory burden or compliance costs, subject to final Water Board approval.
Board staff have stated that they support the upgraded facility, consider the upgrade important to that permitting path, and view the Low Threat designation as the most expeditious and costeffective path currently under consideration. The proposal has been reviewed by Board legal staff; executive management review and additional written direction remain pending.
Staff recommends approval of both amendments to keep design, bidding preparation, SCADA construction/implementation, regulatory coordination, and funding work moving forward.
Approving the amendments now preserves the City’s readiness to move efficiently once State funding direction is received, while delay could affect schedule, procurement coordination, regulatory responsiveness, and operational reliability. In summary, the requested action keeps the compliance project moving, addresses an identified operational risk, preserves readiness for State funding, authorizes implementation of the SCADA portion of the project, and does not require a supplemental budget appropriation at this time.
CORE VALUES: STRATEGIC PLAN 2026-2036:
This action supports the community’s core values and priorities in the Fortuna Strategic Plan 2026- 2036. Reliable wastewater treatment protects quality of life and the natural environment, while continued progress on critical infrastructure demonstrates clear direction and committed service.
Advancing the project while evaluating affordability, outside funding, long-term operating needs, and the State’s final funding package also reflects the Plan’s emphasis on fiscal foundation, honest commitments, and decisions that strengthen the City for the long term.
FISCAL IMPACT:
The current fiscal year wastewater capital budget includes $3.5 million for project development, design, and implementation. The City has paid Jacobs $441,789 during the current fiscal year, leaving $3,058,211 in available current-year budget authority.
Amendment No. 5 adds $442,000 and Amendment No. 6 adds $2,539,015, for a combined authorization of $2,981,015. The remaining current-year budget is sufficient to cover the work anticipated during this fiscal year; therefore, a supplemental budget request is not needed at this time. The requested action increases the total agreement authorization and authorizes construction/implementation of the SCADA portion of the project, including hardware purchase, programming, and related tasks. It does not by itself approve construction spending or the final project financing plan for the main treatment plant improvements. The City will contract directly with an electrician for electrical installation work to avoid Jacobs markup.
Amendment No. 5 is scheduled for completion by December 31, 2026. Amendment No. 6 extends through October 31, 2028, so a portion of the SCADA implementation work and related costs will occur in future fiscal years and will be included in future wastewater capital budgets as needed.
Business Agenda Item 5b
The agreement total includes $59,500 previously authorized for Task 8, Digester Rehabilitation.
The final amendments use the corrected revised total agreement authorization of $8,140,817. The final project scope and financing plan will depend largely on the State Revolving Fund funding package offered by the State. Future fiscal year costs will be incorporated into future wastewater capital budgets as needed once the State funding package, project schedule, and final financing plan are better defined. The overall project estimate has evolved as the City moved away from the west-side land-application concept and advanced a more treatment-focused project through detailed design.
ALTERNATIVES TO STAFF RECOMMENDATIONS:
Alternative 1. Do not approve one or both amendments and direct staff regarding completion of the project components addressed here.
This alternative would defer some or all of the additional authorization requested for the main NPDES Compliance Project and the SCADA component. Not approving Amendment No. 5 could delay final design, bid-phase preparation, regulatory coordination, and State Revolving Fund support for the main project. Not approving Amendment No. 6 could delay SCADA construction/implementation, including hardware purchase, programming, testing, commissioning, and related work needed to address an identified operational vulnerability.
Deferring either amendment could create schedule, procurement, operational, regulatory, or funding-readiness risks.
RECOMMENDED COUNCIL ACTION:
1. Receive staff presentation and review Council questions
2. Open and close Public Comment
3. Motion to authorize the Public Works Director to execute Amendment No. 5 in the amount of $442,000 for final design and bid-phase services for the National Pollutant Discharge Elimination System (NPDES) Compliance Project and Amendment No. 6 in the amount of $2,539,015 for construction/implementation of the Supervisory Control and Data Acquisition (SCADA) component, including purchase and programming of hardware and related tasks described in the attached amendment; authorize the City to procure and contract directly with an electrical contractor for related electrical installation work to avoid Jacobs markup; and find that sufficient appropriations are available in the current fiscal year wastewater capital budget.
ATTACHMENTS:
• Attachment A - Amendment No. 5 to the Jacobs Engineering Services Agreement • Attachment B - Amendment No. 6 to the Jacobs Engineering Services Agreement • Attachment C - Basis of Design Report (July 2026)
Jacobs Engineering Inc.
2525 Airpark Drive
Redding, CA 96001-2443
United States
T +1.530.229.3225
F +1.530.243.1654
www.jacobs.com
September 14, 2026
Mr. Brian Issa
Director of Public Works
P.O. Box 545
Fortuna, California 95540
Subject: Amendment No. 5 - City of Fortuna NPDES Compliance Project Dear Brian:
This proposal is to amend the Scope of Work, dated December 2, 2020, for providing services to City of Fortuna (City) on the NPDES Compliance Project. The Scope of Work has been amended as follows:
Contract Date Amount Total
Initial Contract December 2, 2020 $2,860,759 $2,860,759 Amendment No. 1 September 15, 2023 $0 (No Cost
Amendment)
$2,860,759
Amendment No. 2 January 10, 2024 $0 (No Cost
Amendment)
$2,860,759
Amendment No. 3 March 12, 2025 $1,889,222 $4,749,981
Amendment No. 4 March 31, 2026 $409,821 $5,159,802
Amendment No. 5 September 14, 2026 $442,000 $5,601,802
This amendment includes the following changes:
• Task 1 includes reduction of the remaining budget to reflect only what is needed to complete the project.
• Task 5 includes new budget necessary to complete the Project. This budget includes the following previously out of scope work:
o Animal Control Facility
▪ 90% design of a new animal control facility, including structural design of the new aeration basins assuming demolition of the existing animal control facility. ▪ Removal of the new animal control facility from the design, and revised structural design to protect the existing animal control facility in place. o Cost Estimating
▪ An additional Class 1 cost estimate during the 90% deliverable to support project cost estimates for funding request via the state Department of Financial Assistance.
▪ Development of cost estimates for alternate project elements to consider for inclusion, including:
• PV solar array
• Demolition of existing aeration basins
o Flow Equalization Basin
Jacobs Engineering Inc. 2
▪ Cessation of design of the flow equalization basin upgrades, including piping, lining, pump station and controls, after the 60% design. ▪ Re-starting flow equalization design during the 100% design phase. o Electrical Housing for MCCs
▪ E-housing design for the MCCs, commencing with the 100% design phase, requested as part of the 90% design review.
o Strong’s Creek Box
▪ Replacement of the Strong’s Creek influent box, commencing with the 100% design phase
o Demolition of existing aeration basins
▪ Design of demolition of the existing aeration basins and old secondary clarifiers, to be included as a bid alternate item
o Financial Assistance Application
▪ Development and submission of draft and final versions of a revised Technical Package for application to the Division of Financial Assistance • A new task, Task 9 – Bid Phase Services
o A detailed scope of work for these services is included as an Exhibit to this agreement The revised task budgets will be:
Task Previous Budget Change New Budget
Task 1 – Project Management $428,897 $-46,500 $382,397
Task 2 – Project Definition $589,765 $0 $589,765
Task 3 – Wastewater Rate Study $72,205 $0 $72,205
Task 4 – Landowner Outreach Services $0 $0 $0
Task 5 – Final Design $3,769,135 +$403,100 $4,172,235
Task 6 – Triennial Review Support $114,000 $0 $114,000
Task 7 – As-Needed Support $126,300 $0 $126,300
Task 8 – Digester Rehab $59,500 $0 $59,500
Task 9 – Bid Phase Services $0 +$85,400 $85,400
Total $5,159,802 +$442,000 $5,601,802
All work under the amended Scope is expected to be completed by December 31, 2026. If the work is delayed beyond the reasonable control of Consultant, Consultant reserves the right to request a scope and fee modification for additional administrative and support time.
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The Task Order may be amended in the future with additional budget as the need arises. Such amendments will be authorized by letter. All work will be performed in accordance with the terms and conditions of the December 2, 2020 contract.
To authorize this amendment, please sign both copies of this letter, keep one copy for your files, and return the other copy to my attention. If you have any questions regarding this proposed amendment, please call Ted at 650-644-5948.
Sincerely, Authorized By,
Jacobs Engineering Inc. City of Fortuna
Ted Couch
Project Manager
Brian Issa,
Director of Public Works
Matt Franck Date Authorized: , 2026
Manager of Projects
Jacobs Engineering Inc. 4
1. Exhibit 1: Detailed Scope of Work for Task 7 – Bid Phase Services
1.1 Task 7 - Bid Phase Services
Jacobs (Consultant) will provide services to assist The City of Fortuna (City) in selection of a single Contractor for the construction of the project. These services will consist of the following:
1.1.1 Project Advertisement
Consultant will assist the City in preparing and placing advertisements and notices announcing or soliciting bids for the construction of the project. Consultant will agree with the City on the number and range of distribution of the advertisements and notices. The City will pay directly for all advertisements and notices.
1.1.2 Preparation and Delivery of Bid Documents
Consultant will assist the City in assembling the Bid Documents and delivering the bid documents to prospective bidders. Consultant will maintain a list of prospective bidders receiving the Bid Documents.
1.1.3 Bid Period Information Requests
Consultant will develop and implement procedures for receiving and answering bidders' questions and requests for additional information. The procedures shall include a log of significant bidder questions and requests and the response thereto. Consultant will provide technical interpretation of the contract bid documents and will prepare proposed responses to bidders’ questions and requests, which may be in the form of addenda.
1.1.4 Pre-Bid Conference
Consultant will assist the City in arranging and conducting one pre-bid conference. Consultant will assist the City in developing the agenda and content of the pre-bid conference. Consultant will take notes and make provision for documenting the results of the pre-bid conference. Consultant will also record questions and requests for additional information and shall coordinate with the City for issuing responses and additional information.
1.1.5 Addenda
Consultant shall assist the City in issuing Addenda to the Bid Documents and will distribute Addenda to the bidders. All Addenda will be approved by the City. The City will pay for the expenses of all Addenda.
1.1.6 Bid Opening
Consultant will assist the City in opening of bids. Consultant will review the bids and evaluate them for responsiveness and bid amount. Consultant will also verify through reasonable investigation the financial and performance history documentation submitted by the low bidder and second low bidder. Consultant will prepare a summary of its review and evaluation and include recommendations for award of the contract for construction, or other action as may be appropriate. The City will make the final decision on
Jacobs Engineering Inc. 5
the award of the contract for construction and the acceptance or rejection of all bids. Consultant will provide technical (but not legal) advice in bid protest situations.
1.1.7 Recommendation of Contract Award
Consultant will assist the City in preparing the notice of award; assembly, delivery and execution of the contract for construction; and preparation of the notice to proceed. The City will sign the notice of award and the notice to proceed. Consultant will also provide reasonable assistance with negotiations with the selected bidder prior to execution of the contract for construction.
Jacobs Engineering Inc.
2525 Airpark Drive
Redding, CA 96001-2443
United States
T +1.530.229.3225
F +1.530.243.1654
www.jacobs.com
September 14, 2026
Mr. Brian Issa
Director of Public Works
P.O. Box 545
Fortuna, California 95540
Subject: Amendment No. 6 - City of Fortuna NPDES Compliance Project Dear Brian:
This proposal is to amend the Scope of Work, dated December 2, 2020, for providing services to City of Fortuna (City) on the NPDES Compliance Project. The Scope of Work has been amended as follows:
Contract Date Amount Total
Initial Contract December 2, 2020 $2,860,759 $2,860,759 Amendment No. 1 September 15, 2023 $0 (No Cost
Amendment)
$2,860,759
Amendment No. 2 January 10, 2024 $0 (No Cost
Amendment)
$2,860,759
Amendment No. 3 March 12, 2025 $1,889,222 $4,749,981
Amendment No. 4 March 31, 2026 $409,821 $5,159,802
Amendment No. 5 September 14, 2026 $442,000 $5,601,802
Amendment No. 6 September 14, 2026 $2,539,015 $8,140,817 This amendment includes the following changes:
• Task 5 includes new budget necessary to implement the Wastewater Treatment Plant SCADA and Operational Technology system upgrades based on the final design completed in May 2026. • A detailed scope of work for these services is included as an Exhibit to this agreement The revised task budgets will be:
Task Previous Budget Change New Budget
Task 1 – Project Management $382,397 $0 $382,397
Task 2 – Project Definition $589,765 $0 $589,765
Task 3 – Wastewater Rate Study $72,205 $0 $72,205
Task 4 – Landowner Outreach Services $0 $0 $0
Jacobs Engineering Inc. 2
Task Previous Budget Change New Budget
Task 5 – Final Design $4,172,235 +$2,539,015 $6,711,250 Task 6 – Triennial Review Support $114,000 $0 $114,000
Task 7 – As-Needed Support $126,300 $0 $126,300
Task 8 – Digester Rehab $59,500 $0 $59,500
Task 9 – Bid Phase Services $85,400 $0 $85,400
Total $5,601,802 $2,539,015 $8,140,817
All work under the amended Scope is expected to be completed by October 31, 2028. If the work is delayed beyond the reasonable control of Consultant, Consultant reserves the right to request a scope and fee modification for additional administrative and support time.
The Task Order may be amended in the future with additional budget as the need arises. Such amendments will be authorized by letter. All work will be performed in accordance with the terms and conditions of the December 2, 2020 contract.
To authorize this amendment, please sign both copies of this letter, keep one copy for your files, and return the other copy to my attention. If you have any questions regarding this proposed amendment, please call Ted at 650-644-5948.
Sincerely, Authorized By,
Jacobs Engineering Inc. City of Fortuna
Ted Couch
Project Manager
Brian Issa,
Director of Public Works
Matt Franck Date Authorized: , 2026
Manager of Projects
Jacobs Engineering Inc. 3
1. Exhibit 1: Detailed Scope of Work
PURPOSE:
To implement the Wastewater Treatment Plant (WTP) SCADA and Operational Technology (OT) system upgrades based on the final design completed in May 2026.
BACKGROUND
Design of the upgrades was previously included in the scope of the National Pollutant Discharge Elimination System (NPDES) Compliance Project, however, the SCADA system was identified as an urgent need for replacement and improvement due to its age and lack of resiliency. Failure of the SCADA system could leave operations without supervisory control of the plant for an extended period of time. The control system upgrade has been broken out as a separate standalone effort so that the work can be completed more quickly than would be possible via the NPDES Compliance Project. With this modified approach, the improvements associated with the NPDES Compliance project can be constructed to interface with an already-upgraded control system.
The project execution involves 3 major steps, as outlined below:
• Phase 1 – Concept Definition (work described in previous amendment) • Phase 2 – Final Design (work described in previous amendment) • Phase 3 – Implementation Support (WORK DESCRIBED IN THIS AMENDMENT) Concept definition and final design are both complete (December 2025 and May 2026, respectively).
This amendment is for PHASE 3, implementation support for the designed improvements, including engineering services during construction and SCADA software programming. Implementation will be based on the final design package completed as part of phase 2.
APPROACH
The engineering design is complete (previous work by Jacobs). All field construction will be performed by an electrical contractor procured directly by the City. The City will prepare any required bid package and select the construction contractor. The City will directly contract the electrician for construction based on qualifications and best value, as determined by the City’s project manager. Jacobs will guide the contractor’s field work based on the technical design package (100% design package from May 2026). The project will require significant participation by City staff, including attendance at multiple workshops, review of design and software products, and support during field implementation.
The new SCADA platforms will use Allen-Bradley PLCs and Inductive Automation Ignition HMI. All SCADA software configuration will be implemented using Jacobs’ SCADA software standards, including AllenBradley PLC add-on-instructions (AOIs) and Ignition HMI graphical objects. All OT systems will be configured using Jacobs’ standards.
Major project responsibilities are summarized below:
Jacobs Engineering Inc. 4
• Jacobs’ responsibilities:
o Engineering design for the SCADA upgrade (COMPLETED)
o SCADA software programming and field testing
o OT system configuration and deployment
o Major equipment supply
• City responsibilities:
o Provide information and decisions to facilitate the work, including workshop and meeting attendance
o Procure installation contractor and manage contract
o Provide O&M staff to support Jacobs SCADA software field testing effort • Contractor responsibilities:
o All material supply, except as noted otherwise
o All installation
o Support of Jacobs’ field testing effort
Jacobs will perform the work as described in the detailed scope of work below.
SCOPE OF WORK
Phase 1 – Concept Definition
**NO CHANGES – ALL WORK IS COMPLETE**
Phase 2 – Final Design
**NO CHANGES**
Phase 3 – Implementation Support
7. Engineering Support of Construction
Jacobs will provide engineering services to support the construction effort, as described below:
a. Construction Coordination Meetings
Jacobs will lead project meetings for coordination of the contractor’s work. The scope of work includes the following:
i. Construction Kickoff Meeting
Jacobs will lead a MS Teams kickoff meeting (up to 2 hours duration) with the construction contractor and City staff. Jacobs participation will include 4
Jacobs Engineering Inc. 5
attendees. The intention of this effort is to coordinate the project construction requirements with the City’s selected installation contractor. The meeting will review the project scope, discuss the anticipated sequence of work and construction constraints, and explain the required coordination with Jacobs’ SCADA and OT delivery teams.
ii. Pre-Construction Site Walk
Jacobs will lead a one-day pre-construction site walk at the plant (one Jacobs participant). The intention of this effort is to discuss the project with contractor and tour the facilities to explain the work to be performed. The level of effort estimate includes up to 8 hours onsite, plus travel to and from the site. iii. Construction Coordination Meetings with Contractor:
Jacobs will lead up to 12 one-hour MS Teams meetings (up to 1 hour) to coordinate construction topics. The intention of this effort is to discuss progress, issues, and needs with the City’s selected installation contractor. The level of effort includes regular participation by the project manager and I&C / SCADA delivery leads. It also includes 4-hour allowances for the SCADA software delivery and OT leads to allow for minor participation. iv. PLC Cutover Planning Meetings:
Jacobs will lead up to 7 one-hour MS Teams meetings (1 meeting for each panel to be upgraded) to coordinate, plan, and schedule cutovers to the new PLC platforms. These meetings are anticipated to be held approximately 4 weeks in advance of each PLC cutover and are intended to discuss the upgrade concept and need for any preparation related to the work, especially as it relates to O&M impacts.
v. PLC Cutover Readiness Meetings:
Jacobs will lead up to 7 one-hour MS Teams meetings (1 meeting for each panel to be upgraded) the week prior to each PLC cutover to coordinate with City O&M staff and Jacobs’ programmers to be sure the teams are ready for the next week’s field effort.
b. Submittal Reviews and Clarifications
Jacobs will provide up to 40 hours of staff labor for review of the contractor fiber optic submittals and providing responses to contractor questions. The scope of work assumes limited review of contractor submittals will be required because most of the major project materials will purchased by Jacobs as described herein. c. Allowance for Design Changes (DCNs and Addenda)
Jacobs will provide up to 120 hours of labor for preparation of design change notices (DCNs) and/or addenda that may be identified during project delivery. Major topics known at the time of scope preparation include:
• New network rack at operations building MCC room, including preparation of heat load calculations for the new OT hardware to be installed at the network rack
Jacobs Engineering Inc. 6
• Potential fiber routing modifications based on pathway validation by City’s electrician
d. Site Observation During Construction
Jacobs will provide up to 140 hours of onsite representation from Jacobs’ Yakima-based project representative. The estimate is based on the following:
• Onsite for PLC Replacements: Up to 16 hours onsite for each of 5 PLC panels to be upgraded (80 hours total) plus $2,500 of travel expenses for each of 5 trips. • Onsite for Cleanup of Existing Panel Wiring: Allowance of up to 60 hours onsite to coordinate with the contractor during troubleshooting and / or demolishing of existing wiring. Includes $2,500 of travel expenses for each of 2 trips. • Travel Labor Allowance: Up to 16 hours of travel labor for each site visit (up to 7 separate site visits maximum).
e. Additional Allowance for Implementation Planning Support Task 3a in a previous amendment included a 24-hour labor allowance for initial project implementation planning associated with the design. The allowance was expended during the design effort and task 3a is complete, but additional implementation planning support is required with the City and Contractor during implementation.
This task includes a new 80-hour labor allowance for implementation planning. Example topics may include, but are not limited to:
• PLC cutover sequencing (a well-though plan is required because the new network must be built in segments due to existing raceway constraints) • Temporary gateway PLC (required for maintaining communication between the Allen-Bradley and Modicon PLCs while systems are on both new and old networks and platforms)
• Project implementation scheduling
Deliverables
• Meeting notes
• Submittal review comments
• Responses to contractor questions
• Design change notices / addenda
Assumptions
• The construction contractor will be contracted by the City. Jacobs will guide the contractor’s work based on the 100% design technical package issued for construction.
Only a few minor submittals or contractor questions warranting formal written responses are anticipated during construction. The project is not big enough to warrant use of a formal submittal tracking system, so the scope of work does not include labor
Jacobs Engineering Inc. 7
effort by a design manager or submittal administrator to track or log submittals and/or review comments.
• The allowance for DCSs is anticipated to cover known topics at time of scope preparation. Any additional DCNs required can be funded using owner-managed contingency.
8. Construction Detailed Design
Jacobs will prepare the following construction detail to support construction and/or long-term system O&M:
a. Network Patching Drawings
Jacobs will produce detailed network patching drawings for the copper (CAT-6) and fiber cabling associated with the new core SCADA and DMZ hardware components located the new WWTP network rack. The drawings will be used to guide labeling, termination, and patching by the installation contractor and Jacobs’ staff. This task does not include work associated with the plant’s business network or any other networks.
The level of effort for production of network patching drawings is based on a maximum quantity of 20 drawings. The level of effort assumes 2.4 hours of labor per drawing for production. Connectivity concepts will be based on the final stamped network block diagram drawings.
b. Seismic Anchorage and Bracing Calculations
Jacobs will perform seismic anchorage and bracing calculations and provide anchorage instructions (sketch) for the new OT network rack. The level of effort is based on a maximum of 16 labor hours.
Deliverables
Jacobs will provide one electronic PDF copy of each deliverable identified below via email. Native document copies will be provided with the final deliverables. No hard copies will be provided. • Network patching drawings
• Seismic anchorage and bracing calculations for anchorage of the new network rack • Network rack anchorage instructions (sketch)
Assumptions
• For network patching drawings:
o This task does not include work associated with the business network. • For seismic anchorage and bracing:
o The task does not include any CAD work for production of drawings.
Deliverables are limited to calculations and sketches.
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9. SCADA Software Services
Jacobs will provide SCADA software programming and testing services as described below. The work includes:
• PLC programming for automated processes associated with the following existing plant PLCs to be upgraded to new Allen-Bradley Logix platforms on the project:
o PLC-L1 in the Administration Building (old PLC-1)
o PLC-L2 in the Operations Building (old PLC-2)
o PLC-L3 in Headworks (old PLC-3)
o PLC-S1 in the Digester Building (old PLC-5)
o PLC-S2 in the Compost Building (old PLC-4). Includes programming for remote racks associated with the gravity belt thickeners (old GBT PLC) and belt filter presses (old
BFP PLC)
• PLC programming for a temporary “gateway” PLC that will be used as a data handler to transfer data that is critical for process control between legacy and new PLCs during the migration to the new platforms and network.
• Implementation of a new Inductive Automation Ignition Vision HMI system to replace the plant’s existing Wonderware Intouch HMI. Includes alarm configuration and new highperformance Ignition HMI graphics for the following:
o The plant processes monitored and controlled by the PLCs identified above for PLC programming.
o Remote stations monitored by the plant’s existing Tesco PLC (19 total sites consisting of 9 for collections and 10 for water distribution). • Configuration of a new WIN911 alarm dialer system for alarm notification • Configuration of a new historian to replace the existing Wonderware historian • An allowance for assistance with configuration of new automated reports • NOTE: No work is included for PLC or OIT programming associated with the remote stations.
Major efforts are outlined below:
a. Software Planning
Jacobs will provide planning services in preparation for the SCADA software programming effort. The work includes:
i. SCADA Software Functional Loop Descriptions
NO NEW SCOPE OR FUNDING INCLUDED. Scope for this effort was included in a previous SCADA-related amendment (Task 3).
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ii. Final PLC I/O List and Software Tag Assignments
NO NEW SCOPE OR FUNDING INCLUDED. Scope for this effort was included in a previous SCADA-related amendment (Task 3).
iii. Peer Communication Data Map
Jacobs will provide up to 24 hours of labor to develop data maps showing PLC-toPLC (peer) communications via the Ethernet networks. iv. Commissioning Database Setup
Jacobs will provide up to 16 hours of labor to setup and populate the commissioning database in preparation for programming and testing.
v. Historian and Automated Reports Workshop
Jacobs will lead a Microsoft Teams workshop (6-hour maximum duration) to discuss historian configuration and automated reporting needs. The outcome of the workshop will define the scope of work for production of new automated reports.
The workshop will be attended by up to 3 Jacobs staff members.
Note that work related to assignment of software tags and development of software functional loop descriptions (other tasks typically associated with SCADA software planning) was included in previous scope, so is not addressed in this amendment b. Offsite Programming and Factory Testing
Jacobs will provide SCADA software programming for the functions defined in the final approved loop descriptions. Jacobs’ scope includes development of new Allen-Bradley PLC programs, Ignition Vision HMI graphics, historian, trending, and software alarm dialer. All programming will be performed using Jacobs’ standards, including the firm’s library of addon instructions, HMI graphical objects, and programming approaches. No PanelView programming is included in the scope of work. Jacobs will present draft HMI graphics to City staff for review prior to completion of the programming effort.
Work includes factory testing of the functions with simulated I/O as much as practical in Jacobs’ lab for quality control prior to software field testing. Jacobs will perform unwitnessed testing for quality control, then provide up to 3 days of witnessed demonstration to Fortuna staff in Jacobs’ Corvallis, Oregon, SCADA laboratory. Factory testing will be accomplished using Rockwell Logix Echo simulation software.
The estimated level of effort is based on the following:
• A 20-hour allowance for installation and configuration of the SCADA software licenses identified in the 100% final design package.
• A maximum of 515 hardwired PLC I/O points at a historical average labor hours per hardwired I/O point
• Average of 4 hours for each UPS monitored via SNMP (7 UPSs total) • Up to 200 hours of labor for replication of existing system graphics associated with the offsite facilities (19 sites total) via the existing Tesco PLC system. Assumes a
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maximum of 50 existing system graphics at 4 hours per graphic and that there is significant similarity between many of the sites allowing a copy-and-modify approach.
• A 40-hour allowance for initial programming of the gateway PLC that will be used to handle communication between new and existing PLC platforms until all PLCs can be upgraded on the project.
• A 32-hour allowance for conducting graphics reviews with City staff (2 people up to 16 hours each)
• An 80-hour allowance for conducting SCADA software factory demonstrations to City staff in Jacob’s Corvallis, Oregon, SCADA integration laboratory (2 people up to 40 hours each)
Note that budget for supply of the software licenses and Logix Echo subscription is included under a separate “material procurement” task in this amendment. c. Onsite SCADA Software Field Testing
Following the PLC hardware replacement at each plant facility by the City’s contractor, Jacobs will re-test the SCADA software functions in the field with actual field equipment.
The estimated level of effort is based on the following:
1) Initial Onsite System Setup for Startup Preparation
Jacobs will provide 1 person at the project site (up to 32 hours onsite plus travel allowance) to perform the initial onsite setup, including establishing connectivity between the WWTP Ignition system and the remote stations PLCs and configuring WIN-911 software alarm dialer.
2) SCADA Software Field Testing for WWTP Processes
Jacobs will provide 1 person at the project site to perform SCADA software site acceptance testing and loop tuning. The level of effort is based on an 80-hour average allowance (including travel) for each of 7 I/O racks to be upgraded. 3) SCADA Software Field Testing for Remote Station Monitoring Jacobs will provide 1 person onsite for up to 152 hours of field testing the new graphical features associated with the existing Tesco PLC system. The level of effort is based on an average of 8 hours of testing per remote station (19 remote stations total) and assumes the City will provide staff to operate field equipment to test the new graphical functions.
4) Allowance for Temporary Gateway PLC Programming
Jacobs will provide up to 60 hours of labor for configuration of temporary programming to transfer data that is critical for process control between legacy and new PLCs during the migration to the new platforms and network.
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5) Operator Training
Jacobs will provide up to 60 hours of labor to prepare operators for management of the system throughout the migration to the new platform (when the system is split between new and existing HMIs) and to train operators how to use the new SCADA graphics to operate the processes.
The estimated level of effort for SCADA software field testing assumes City O&M staff will be available to operate field equipment allowing Jacobs to test the software functions. d. Other Related Work
Jacobs will perform the following additional SCADA-related tasks:
1) Allowance for Configuration of Automated Reports
Jacobs will provide up to 80 hours of labor to assist City staff with configuration of automated reports using data from the new SCADA historian. The scope of work assumes this work will be performed remotely using a secure remote access connection.
2) VM of Existing Intouch Historian
Jacobs will provide up to 40 hours of onsite labor to create a new virtual machine (VM) of the existing Wonderware historian. The approach assumes the City will use existing Wonderware tools to access historical data from the old Wonderware historian virtual machine when and if needed.
3) Kepware and AssetCentre Setup and Configuration
Jacobs will provide up to 40 hours of onsite labor to install and configure the software.
e. Software-Related Documentation for Record (Turn-Over Package) Jacobs will provide SCADA software-related documentation for the new system. The content will include:
• Final updated copies of the PLC I/O lists (Excel)
• Final PLC peer data communication map
• Final copy of the commissioning database with software tags, final loop descriptions, and SCADA software test documentation
Deliverables
• PLC peer data communication map
• Final PLC programs and Ignition HMI application
• New automated reports
• Virtual Machine copy of the plant’s existing Wonderware Historian • Software related documentation for record, including final commissioning database, including record of final SCADA software factory and field test completion
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Assumptions
• There is significant uncertainty about the remote station monitoring and control system, including the Tesco “master” PLC located at the WWTP. As of 8/31/26, Jacobs’ I&C designer is still investigating the system with City O&M staff. Some of the system is monitored and controlled by a “Tesco” PLC located at the WWTP that was installed and maintained by a local integrator (Tesco), but the company was acquired in recent years and many of the legacy staff have departed leaving little information about the system functionality. The scope of work includes allowances for configuration of new graphics and field testing. The cost of this work could be impacted depending upon the findings (if we can’t get programming software to investigate the system functions, for example).
The basis of the scope assumes we can learn about the new graphics functional requirements by investigating and replicating the existing Wonderware Intouch HMI.
The scope of work is limited to replacement of the existing graphical functions and does not include any work related to the existing Tesco PLC. • For software planning:
o Work related to definition of the SCADA software programming approaches (software standards), assignment of software tags, and development of software functional loop descriptions was included in previous scope, so is not addressed in this amendment.
• For SCADA software programming:
o City staff will provide review and approval of final loop descriptions in workshops (addressed in previous scope of work) prior to commencement of programming. Changes to software functions after City acceptance of loop descriptions will constitute a change warranting additional compensation. The project approach is intended to provide review and input by City staff to minimize the potential for re-work after the programming effort has begun. o Jacobs’ scope of work is limited to programming of the SCADA software, including PLC, HMI, historian, and alarm dialer. All other device and software configuration will be provided by the installation contractor, including instrument calibration, VFD configuration (brake horsepower, ramp time, etc.), and Ethernet communication configuration for all field devices that are to be monitored or controlled by the SCADA system.
• For field testing:
o Plant operations can manually operate and monitor plant processes to accommodate electrical work and SCADA software testing, which will interrupt automated monitoring and control for extended periods of time. o During cutovers, the electrician and Jacobs staff will be permitted to continue work outside of City’s normal work hours to minimize system downtime after work has started. Jacobs’ potential after-hours work includes onsite software testing and loop tuning.
o For testing new HMI graphics associated with the offsite facilities:
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▪ Jacobs assumes City staff will assist with operation of field equipment to confirm that the new functions perform as expected.
▪ The City will provide copies of the existing Tesco PLC programs and a license for the programming software.
▪ The basis of the budget is an allowance based on assumptions. • Jacobs will use the commissioning database to document the final loop descriptions and log completion of the SCADA software factory and field testing efforts. • Changes after City acceptance of deliverables will constitute a change warranting additional compensation. Examples include, but are not limited to, software delivery concepts (standards), loop descriptions, draft graphics, witnessed SCADA software factory tests, and field tests.
• For Software-Related Documentation for Record (Turnover Package):
o Content for passwords will not be included (to minimize cybersecurity risk). o Content for OT systems will be covered separately under Task 4. o The scope of work does not include printed copies of PLC programs or SCADA HMI graphics.
o The scope of work does not include production of any standard operating procedures (SOPs).
o Production of a bill of material (BOM) is not included because the BOMs are included in the drawings.
10. OT Services
Jacobs will provide configuration and deployment services for the new WWTP core OT infrastructure. The OT material (to be procured by Jacobs under separate task in this amendment) will be shipped to Jacobs’ lab for configuration and factory testing by Jacobs’ staff. Following configuration and factory testing, the equipment will be sent to the project site for installation and field testing (deployment). Major efforts are identified below:
a. OT Logical Design
NO NEW SCOPE INCLUDED IN THIS AMENDMENT. Scope for this effort was included in Task 3 of a previous SCADA-related amendment.
b. OT Configuration and Factory Testing (at Jacobs’ Lab) Jacobs will configure and factory test the OT systems in a laboratory environment at Jacobs’ Denver office prior to deployment to the project site. Major work includes:
• Receiving and inventorying the materials.
• Unboxing and setting up equipment in the Jacobs’ OT lab, including temporary power and network connectivity.
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• Configuring OT components for the SCADA network, including loading operating systems, installing software, spinning up virtual machines on the server hosts, and configuring firewalls and switches.
• Quality checking and unwitnessed factory testing of the OT systems. • Packaging all materials at Jacobs’ configuration lab for delivery to the project site.
The scope and budget assume that work will be performed by Denver-based OT staff in the Denver SCADA laboratory.
c. OT System Field Deployment
Jacobs will deploy the configured OT hardware to the project site. The scope of work includes (1) 40-hour trip to the project site for 2 staff members.
Work includes:
• Unpacking and installing equipment in existing racks and/or enclosures. • Implementing patching for new SCADA OT components.
• Powering up and commissioning the OT system components. • Demonstrating the system’s major functions to a City witness d. OT Record Documentation
Jacobs will provide record documentation for the OT system configuration to facilitate longterm O&M. Major deliverables include final IP address list, VLAN summary, and OT system functional descriptions for system failover, backups, and secure remote access. Any simple graphical content will be generated using Bluebeam or Visio (Jacobs has not included labor for CAD production of any deliverables). The deliverable content and format will be based on documents produced by Jacobs for other clients but customized for the deployment at Fortuna.
e. Allowance for OT System Post-Deployment Support
Jacobs will provide up to 272 hours of support for the SCADA team following field deployment of the OT systems. The allowance is based on the following assumptions:
• An allowance of 192 hours for remote system maintenance based on 16 hours per month for 1 year (12 months). This activity is intended to perform regular system functional checks and implementation of critical patches and updates. • An allowance of up to 40 hours of labor + travel expenses for (1) site trip to perform onsite maintenance and critical updates.
• An allowance of up to 40 hours of remote OT support to Jacobs’ SCADA software delivery team during SCADA software programming, factory testing, and field testing.
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Deliverables
Jacobs will provide one electronic PDF copy of each deliverable identified below via email. Native document copies will be provided with the final deliverables. No hard copies will be provided. • Configured OT system
• Final OT record documentation
• Patch cords for the OT core material within the server rack at the WWTP Assumptions
• Jacobs’ work is limited to configuration of OT components for the SCADA and DMZ networks. Jacobs’ scope does not include work related to any other network. • All OT configuration will be performed using Jacobs’ standard approaches. • All OT hardware and software will be shipped to Jacobs’ laboratory in Denver, Colorado, for configuration and factory testing by Jacobs’ staff. • All OT materials will be received at Jacobs’ lab no less than 6 months in advance of the required date for beginning the OT system deployment to the project site. • The estimated level of effort for configuration and deployment of OT systems is based on the following assumed major components and system functions:
o Configuration of the following assumed major OT components:
▪ All OT components shown to be PROVIDED BY JACOBS in the MAJOR EQUIPMENT LIST contained in the 100% final technical package for construction. Includes configuration of virtual machines, VLANs, IP address schemes, Ethernet ring protocols, and firewall rules. o Configuration of the following major OT system features:
▪ Automated backups of critical SCADA files to the network attached storage (NAS) device
▪ Secure remote access connectivity for remote troubleshooting and system maintenance
▪ NOTE: No network monitoring is included.
• Jacobs’ scope for SCADA network patching is limited to implementing patches for SCADA system components within SCADA enclosures. All other network cable terminations and patching will be implemented by the installation contractor. All network patching will be based on the network patching drawings developed by Jacobs under separate scope.
11. Material Procurement Support
Jacobs will procure the following SCADA-related material on the City’s behalf to enable access to Jacobs’ discounted pricing (where available) and relieve City staff of the procurement labor effort burden:
• SCADA software. Material to be supplied by Jacobs is shown in the SCADA SOFTWARE LIST contained in the 100% final technical package.
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• PLC Hardware. Material to be supplied by Jacobs is shown in the PLC HARDWARE EQUIPMENT LIST contained in the 100% final technical package. • OT Hardware and OT Software. Material to be supplied by Jacobs is shown as PROVIDED BY JACOBS in the MAJOR EQUIPMENT LIST contained in the 100% final technical package.
• Patch cords. The budget includes an allowance for patch cords that Jacobs will use to patch the major OT core hardware components within the new server rack at the WWTP.
The City will own all material and maintain responsibility for warranty, support, and replacement.
Jacobs can provide support for coordinating warranty topics, if desired and requested by the City.
The labor budget is an allowance for Jacobs’ work to coordinate and obtain quotations, place orders via purchase order or procurement credit card, track material inventory, and approve invoices. The material budget includes allowances for direct material costs for the assumed material shown in the 100% final technical package as noted above, shipping (calculated as a percentage of the hardware cost), escalation, California state sales tax (estimated at 8.7% of direct material cost budget), and a contingency to provide some coverage for potentially missing items at time of estimate. The direct cost budgets are based on actual quotations for the material or estimates based on recent purchases. A significant portion of the escalation allowance is for potential OT hardware cost increases due to a global memory chip shortage, based on input from suppliers. The remainder of the escalation allowance is for more traditional material cost increases that occur each year but not on any particular fixed schedule.
Jacobs will arrange for material to be shipped to Jacobs’ laboratory for configuration and factory testing.
Deliverables
• Material price quotations
• Purchase orders
• Purchase receipts
• Material inventory tracking documentation (Excel spreadsheet) • Materials
Assumptions
• The materials to be provided by Jacobs are based on material lists contained in the 100% final contract documents (technical package), as noted above. • The budget for SCADA software includes cost for 1 year of Inductive Automation manufacturer’s Total Care support and an allowance for up to 2 years of Rockwell LogixEcho simulation software to accommodate factory testing. • The labor budget for material procurement support is based on preparation and administration of up to 5 purchase orders at 20 hours each.
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• The budget for OT material is based on supply of the following manufacturer support durations:
o Firewalls – 5 years (note that manufacturer’s support is required for firewalls for access to critical updates).
o Switches – 5 years
o Servers – 3 years
o SCADA Workstations (Dell) – 3 years
12. Control System Documentation and Record Drawings
Jacobs will produce the following documentation and updates for project construction record and/or to facilitate long-term system operation and maintenance:
a. Drawing Updates for Construction Record
Jacobs will provide record drawing updates as described below:
1)Technical Design Package Drawings
Jacobs will provide CAD updates to the drawings included in the technical design package based on red-line markups from the field installation contractor and/or Jacobs’ onsite project representative. The labor effort estimate is based on 2 hours per drawing and assumes a maximum of 61 drawings (56 drawings in 100% final technical package + 5 drawing allowance for new drawings via design change).
Drawing content will use updated photographs for panels similar to the approach used in the design.
2)PLC I/O Wiring Drawings
Jacobs will provide CAD updates to the PLC I/O wiring drawings based on red-line markups from the field installation contractor and/or Jacobs’ onsite project representative. The labor effort estimate is based on 1.5 hours per drawing and assumes a maximum of 173 drawings.
3)Network Patching Drawings
Jacobs will provide CAD updates to the network patching drawings based on red-line markups from the field installation contractor and/or Jacobs’ onsite project representative. The labor effort estimate is based on 1.5 hours per drawing and assumes a maximum of 23 drawings.
4)Network Rack Layout Drawing
Jacobs will provide CAD updates to the network rack layout drawing based on redline markups from the field installation contractor and/or Jacobs’ onsite project representative. The labor effort estimate is based on 8 hours for the drawing. b. New PLC Panel Drawing Sets
Jacobs will produce new drawings to document the upgraded PLC panels. The City does not currently have good documentation for the PLC panels. The documentation approaches are
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generally based on those identified in the basis of design report (BODR). The scope of work includes the following:
• New Drawings to Be Produced Under this Scope:
o Drawing Index Sheets - (1) new drawing for each PLC processor upgraded on the project (5 total).
o External Elevation Drawings - (1) new drawing for each PLC panel upgraded on the project (7 total). The drawing content will be a photograph of the panel at the conclusion of the SCADA upgrade construction with bill of material to identify the major components on the face of the panel. o Internal Elevation Drawings - (1) new drawing for each PLC panel upgraded on the project (7 total). The drawing content will be a photograph of the panel at the conclusion of the SCADA upgrade construction with bill of material to identify the major components inside the panel. The bill of material will not identify the manufacturer / model of the components but will identify the major component so location can be understood by a user. o Power Wiring Drawings – (2) new drawings – one for 120VAC power distribution and one for 24VDC power distribution – for each PLC panel upgraded on the project (7 panels = 14 drawings total). o PLC Rack Layout Drawings – (1) new drawing for each PLC panel upgrade on the project (7 total). The drawing will identify the modules in each rack’s slot by part number so a reader understands how the modules are arranged in the PLC racks and where spare slots are available.
• Existing Drawing to Be Incorporated Into the Sets:
o PLC I/O Wiring Drawings – No work is required for this topic, but the drawings produced by Jacobs under previous scope will be packaged with the panel sets for organization, management, and usage for operation and maintenance.
The level of effort is based on 12 hours of labor for production of the new drawings (40 drawings total per above), up to 80 hours of field investigation to identify and document the power wiring for each panel, 20 hours for task oversight and QC, and 20 hours for assembly of the final packages including incorporation of the PLC I/O wiring drawings into the sets. c. Written Documentation and Standards
Jacobs will produce the following written documents to help users navigate the existing system throughout its life:
1)SCADA Operations Guide
Jacobs will produce a SCADA operations guide for use by City O&M staff. The operations guide is intended to help operators understand how to use the SCADA graphics to operate the system. The operations guide will be similar in content and format to those provided by Jacobs for other clients. Each chapter will include a table of contents, table of figures, relevant screenshots, detailed description of
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Remote Manual and Remote Auto functionality and formulas for any control calculations (e.g. dosing). The operations guide will include the following chapters:
• General SCADA, including navigation, popups, alarms, and AssetCentre • (5) chapters (one for each major PLC to be upgraded on this project) for major plant processes, including Administration Building PLC-L1, Operations Building PLC-L2, Headworks PLC-L3, Digester PLC-S1, and Compost Facility PLC-S2.
• (1) Chapter for Miscellaneous Systems, including panel status, fire alarms, and intrusion
• (1) Chapter for Maintenance, including power monitoring, PLC status, and server status
The level of effort for the Duff WTP SCADA operations guide is based on:
• 30 hours of effort for each major process area (5 total). • A 24-hour allowance for generation of the general, miscellaneous, and maintenance chapters.
2)SCADA Software Standards
Jacobs will produce written SCADA software standards to help future integrators understand the City’s software delivery approaches so they can maintain uniformity and standardization in the SCADA software as the plant is expanded and modified.
The written SCADA software standards will be based on Jacobs’ standard approaches and will include the following major sections:
• PLC Tagging and Programming Standards
• HMI Style Guide
• Alarm Management Guide
The project approach assumes that Jacobs’ technical staff will simply apply minor updates to Jacobs’ existing written SCADA software standards to produce a final product for Fortuna.
Deliverables
Jacobs will provide one electronic PDF copy of each deliverable identified below via email. Native document copies will be provided with the final deliverables. No hard copies will be provided. • Updated record drawings for the following:
o Technical design package
o PLC I/O Wiring Drawings
o Network Patching Drawings
o Network Rack Layout Drawings
• New PLC Panel Drawing Sets
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• SCADA Operations Guide
• SCADA Software Standards
Assumptions
• For Record Drawing Updates:
o Format and content of final record drawings will be based on the format and content of the original drawings, simply updated with changes to reflect the final installation.
• For New PLC Panel Drawings:
o Elevation drawings will use photographs with notes to identify the major panel components.
o The level of effort for panel power wiring drawings includes an allowance for field investigation because the City does not have good documentation of the existing wiring.
• For SCADA Operations Guide
o The document is not intended to be a complete operation and maintenance (O&M) manual, because topics related to manual operation, taking processes offline, and system lubrication and maintenance (as examples) are not included.
Instead, the document is intended help new operators understand how to use the new SCADA HMI graphics for system monitoring and control. o The SCADA operations guides will not be as detailed as the written loop descriptions that are used as programming instructions and will not describe functions that are external to the SCADA system.
• For SCADA Software Standards
o The level of effort assumes the software delivery will be based on Jacobs’ standards with no changes, which requires only minor updates to SCADA software standards that have been previously prepared by Jacobs.
13. Additional Funding for SCADA Phase 2 Final Design Amendment Tasks Jacobs will provide additional work related to Tasks defined in previous amendments as outlined below:
a. Add Funding for Task 5 I/O Wiring Diagram Production Jacobs will perform the following additional work associated with Task 5 for Production of PLC I/O Wiring Diagrams (part of a previous amendment):
• Modify the I/O wiring diagram template format to accommodate the City-approved change from CompactLogix to ControlLogix PLC platform for PLC-L1, PLC-L2, PLC-L3, PLCS1, and PLC-S2 Rack 0 only. Note that this change does NOT apply to PLC-S2 remote I/O racks 1 or 2 (associated with the belt filter press and gravity belt respectively). Refer to Change Log item 1 (Upgrade to ControlLogix Platform for Modicon PLC Replacements) dated 5/6/26.
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• Add termination number detail to PLC I/O wiring drawings for existing panels 700LCP001, 800LCP001, and 950LCP001 based on existing system information provided by the City. The work was approved by the City on 5/6/26 to add detail that would be helpful for long-term system O&M. Refer to Change Log item 3 (Add Field Termination Numbers to I/O Wiring Drawings for PLCs 3, 4 Rack 0, and 5) dated 5/6/26. Adding funding for this task will avoid usage of the owner-managed contingency, leaving it fully funded to accommodate future changes.
This task does not change the scope for originally-defined Task 5 but adds funding for the new items identified in the bullets above.
b. Add Funding for Additional Design
Jacobs provided additional design and task management to navigate change and investigate options for new features or project additions. Major efforts included:
• Change project approach from use of CompactLogix to use of ControlLogix platform at 5 panels to minimize potential problems in the existing wiring systems during construction, when downtime would be impactful to operations. • Evaluation of the proposed pathway for new fiber optic cable to create a network ring using existing raceways. This effort included preparation of material to guide work by a City-contracted electrician for investigation of the pathway. • Significant coordination with the NPDES project team for scope split and coordination of work, including development of a concept to extend the proposed plant ring to incorporate the new NPDES facilities.
• Investigation of options for location of the new server rack.
Refer to the change log for tracking and accounting of the above topics. This scope item is to recover cost associated with the effort expended during final design. Note that this item adds funding for existing Task 1 (task management), but that no additional funding is required for Task 2 (final design) because Jacobs was able to accommodate the design team’s effort within the final design budget.
Any design changes resulting from the work described above is anticipated to be captured in a new design change notice scoped under a separate task in this amendment.
Deliverables
• PLC I/O Wiring Drawings as defined for Task 5 (per previous amendment) Assumptions
• This work is complete, but adds funding to budgets established in earlier amendments, allowing change to be accommodated from the originally anticipated scope of work.
14. Task Management During SCADA Upgrade Implementation Jacobs will manage the implementation of the SCADA improvements as described in this scope of work. Major efforts are described below:
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a. Regular Monthly Project Management Support
Jacobs will provide the following task management duties on a regular basis throughout the project duration. The budget estimate is based on an average of 4 hours per month for the task manager through June 30, 2028, for the task manager to coordinate with Jacobs NPDES project manager. Major tasks include the following:
• Monitor task progress.
• Monitor task activities for potential changes.
• Document meeting decisions and action items.
• Assist Jacobs’ project manager with preparation of financial and status reporting associated with SCADA upgrade task to support monthly invoicing. b. Status and Coordination Meetings with the City’s Project Manager Jacobs will lead up to (23) MS Teams coordination meetings with the City’s project manager to discuss schedule, budget, status, and any needed information or data. The level of effort assumes an average meeting frequency of monthly and length not exceeding 1 hour. The number of meetings is based on monthly meetings through June 2028 (5 in 2026, 12 in 2027, 6 in 2028).
c. Project Delivery Schedule Concept
Jacobs will provide up to 24 hours of labor to develop a project delivery schedule concept in MS Excel or MS Project for high-level project planning. The intention for use of this document is as a tool for coordination of the following major topics:
• Show estimated OT material delivery timeline, which is a predecessor for completion of the OT configuration and deployment
• OT delivery schedule requirements for meeting the needs of the SCADA software delivery team
• SCADA software delivery completion requirements
• Show the general period during which PLC migrations to the new platform are anticipated (estimates for time of year, number of months) for coordination with the construction contractor
• Planning of SCADA upgrade final completion milestone to accommodate the NPDES project requirements
The scope of work does not include recurring maintenance or updates to the schedule.
Instead, it is intended as an early planning tool to identify milestones for major project delivery components.
Deliverables
• Summary meeting notes
• Log of action items and decisions
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• Log of scope changes
• Project delivery concept schedule
Assumptions
• This task provides support for up to (23) months of project delivery (through June 2028).
Additional funding for task management will be warranted for any work beyond June 2028.
GENERAL ASSUMPTIONS
The scope assumes the following:
• The scope of work includes tasks that are based on duration of project delivery, including task management and OT post-deployment support. The level of effort estimate includes labor for these tasks through October 2028.
• Jacobs increases labor rates on January 1 of each calendar year. The budget includes escalation allowance for work assumed to be performed beyond 2026 as shown in the level of effort estimate.
• Project deliverables will be provided in electronic format (Jacobs has not included cost for production or delivery of hardcopies, unless noted otherwise). For each deliverable, electronic files will be provided in native and PDF formats. • The existing PLC replacements can be accommodated by simple rack replacements using the existing panel and field wiring. The scope of work does not include budget for investigating or designing replacement or modification of existing panel or field wiring. • Allowances for travel expenses are generally based on $3,000 for every 40 hours of work associated with onsite activity.
• The presence or duties of Jacobs’ personnel at a construction site, whether as onsite representatives or otherwise, do not make Jacobs or Jacobs’ personnel in any way responsible for those duties that belong to Client and/or the construction contractor or other entities, and do not relieve the construction contractor or any other entity of their obligations, duties, and responsibilities, including, but not limited to, all construction methods, means, techniques, sequences, and procedures necessary for coordinating and completing all portions of the construction work in accordance with the construction Contract Documents and any health or safety precautions required by such construction work.
• Jacobs does not warrant that the City's SCADA system or any interconnected system will be free from vulnerabilities or immune from cyberattack. City acknowledges that cybersecurity risks cannot be completely eliminated. Jacobs shall perform its services in accordance with the applicable professional standard of care. Jacobs shall use reasonable professional care in the administration, maintenance, and operation of any remote access infrastructure, gateway, VPN, or DMZ environment owned or controlled by Jacobs. City shall not be required to indemnify Jacobs for claims arising from Jacobs' negligence, willful misconduct,
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or breach of this Agreement. Any future maintenance, managed services, monitoring, or SCADA support agreements shall separately allocate cybersecurity responsibilities between the parties.
SCHEDULE CONCEPT
Major milestones and planned activity are outlined below:
• Contracted / Notice to Proceed – by October 1, 2026
• All OT hardware and software will be at Jacobs’ lab no later than January 31, 2027. • Jacobs will not be required onsite for OT deployment or SCADA software functional testing before June 1, 2027. The assumed dates for material availability provide assurance that Jacobs will have sufficient time to setup, configure, and factory test the systems prior to field deployment or field testing. Delays in supply of materials by Others could affect Jacobs’ ability complete work on time to meet the assumed schedule. • All material procurement support will be completed in 2026 calendar year. • All SCADA software planning and programming, will be completed before the end of the 2027 calendar year.
• All OT planning, configuration, and deployment will be completed before the end of the 2027 calendar year.
• All SCADA software field testing will be performed in 2027 and 2028. • Record documentation will be performed in 2028.
• Completion of All Work in This Amendment – by October 31, 2028.
Funding Application
Technical Report Update
Version: 03
City of Fortuna
NPDES Compliance Project
July 17, 2026
Funding Application Technical Report Update
Client Name: City of Fortuna
Project Name: NPDES Compliance Project
Document No: 250616123326_e76985f3 Project No: W8Y10900 Date: July 17, 2026 Project Manager: Ted Couch
Revision: 03 File Name: Technical Report
Document History and Status
Revision Date Description Author Checked Reviewed Approved 01 01/20/2023 Draft v1 YC PRR DR TC
02 05/05/2026 Draft v2 YC PRR TC TC
03 07/16/2026 Draft v3 YC PRR TC TC
Jacobs Engineering Inc.
2525 Airpark Drive
Redding, CA 96001-2443
United States
T +1.530.229.3225
F +1.530.243.1654
www.jacobs.com
© Copyright 2026 Jacobs Engineering Inc.. All rights reserved. The content and information contained in this document are the property of the Jacobs group of companies (“Jacobs Group”). Publication, distribution, or reproduction of this document in whole or in part without the written permission of Jacobs Group constitutes an infringement of copyright. Jacobs, the Jacobs logo, and all other Jacobs Group trademarks are the property of Jacobs Group.
NOTICE: This document has been prepared exclusively for the use and benefit of Jacobs Group client. Jacobs Group accepts no liability or responsibility for any use or reliance upon this document by any third party.
Funding Application Technical Report Update
250616123326_e76985f3 ii
Contents
Acronyms and Abbreviations........................................................................................................................................ vii
1. Introduction ........................................................................................................................................................1-1
1.1 Background Information ....................................................................................................................................1-1
1.2 Existing Process Description.............................................................................................................................1-1
1.3 Effluent Discharge Requirements (Current and Anticipated)..............................................................1-2
1.4 NPDES Compliance Project...............................................................................................................................1-3
1.5 Design Flows and Loadings...............................................................................................................................1-3
1.6 WWTP Upgrades ....................................................................................................................................................1-4
2. Alternatives Evaluation ....................................................................................................................................2-1
2.1 Alternatives Evaluation for Project Definition ...........................................................................................2-1
2.1.1 Economic Evaluation ..............................................................................................................................2-2
2.1.2 Non-Economic Evaluation....................................................................................................................2-4
2.1.3 Total Benefit Scoring for Alternatives..............................................................................................2-5
2.1.4 Recommended Secondary Treatment Alternative .....................................................................2-6
2.2 Alternatives Evaluation for Detailed Design...............................................................................................2-6
3. Treatment Facilities ..........................................................................................................................................3-1
3.1 Automated Flow Equalization ..........................................................................................................................3-1
3.2 Secondary Treatment..........................................................................................................................................3-2
3.2.1 Primary Effluent/Return Activated Sludge Mixing Box ............................................................3-2
3.2.2 Aeration Basins .........................................................................................................................................3-3
3.2.3 Aeration System .......................................................................................................................................3-7
3.2.4 RAS/WAS Pumping .................................................................................................................................3-8
3.2.5 Chemical Feed and Storage.................................................................................................................3-9
3.2.6 WAS and Filtrate Storage Upgrades ..............................................................................................3-11
4. Discipline Design Criteria.................................................................................................................................4-1
4.1 Site Civil.....................................................................................................................................................................4-1
4.1.1 General Description ................................................................................................................................4-1
4.1.2 Codes, Regulations, and Standards ..................................................................................................4-1
4.1.3 Survey ...........................................................................................................................................................4-1
4.1.4 Demolition..................................................................................................................................................4-2
4.1.5 Grading and Drainage Design Criteria .............................................................................................4-2
4.1.6 Site Layout..................................................................................................................................................4-2
4.2 Yard Piping ..............................................................................................................................................................4-3
4.3 Architecture.............................................................................................................................................................4-3
4.3.1 Codes, Regulations, and Standards ..................................................................................................4-3 Funding Application Technical Report Update
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4.3.2 Energy Code Data ....................................................................................................................................4-4
4.3.3 Accessibility and Universal Design....................................................................................................4-4
4.3.4 Design Concepts.......................................................................................................................................4-4
4.3.5 Code Summary..........................................................................................................................................4-5
4.3.6 Chemical Material Storage...................................................................................................................4-5
4.4 Geotechnical ...........................................................................................................................................................4-5
4.4.1 Soil Profile...................................................................................................................................................4-6
4.4.2 Seismic Site Class.....................................................................................................................................4-6
4.4.3 Groundwater..............................................................................................................................................4-6
4.4.4 Bearing Capacity.......................................................................................................................................4-6
4.4.5 Lateral Earth Pressures ..........................................................................................................................4-7
4.4.6 Construction Considerations ...............................................................................................................4-8
4.5 Structural..................................................................................................................................................................4-8
4.5.1 Structural Criteria.....................................................................................................................................4-8
4.5.2 Loads.............................................................................................................................................................4-9
4.5.3 Construction Materials........................................................................................................................4-11
4.5.4 Structural Systems................................................................................................................................4-12
4.6 Process Mechanical...........................................................................................................................................4-13
4.6.1 Codes, Regulations, and Standards ...............................................................................................4-13
4.6.2 Process Equipment Layout and Access ........................................................................................4-13
4.7 Corrosion ...............................................................................................................................................................4-15
4.7.1 Atmospheric Exposure........................................................................................................................4-15
4.7.2 Submerged Exposure ..........................................................................................................................4-16
4.7.3 Buried Exposure.....................................................................................................................................4-16
4.7.4 Hydrogen Sulfide Exposure ..............................................................................................................4-17
4.7.5 Chemical Exposure...............................................................................................................................4-17
4.7.6 Building Systems and Mechanical Equipment ..........................................................................4-17
4.7.7 Electrical and Instrumentation and Controls Systems and Materials ..............................4-17
4.8 Building Services ................................................................................................................................................4-18
4.8.1 Codes, Regulations, and Standards ...............................................................................................4-18
4.8.2 Facility Design Criteria ........................................................................................................................4-18
4.8.3 Building Services Materials ...............................................................................................................4-19
4.8.4 HVAC System Description .................................................................................................................4-19
4.8.5 Energy Compliance ..............................................................................................................................4-19
4.9 Fire Protection.....................................................................................................................................................4-19
4.10 Instrumentation and Control.........................................................................................................................4-19
4.10.1 Existing Instrumentation and Controls....................................................................................4-20 Funding Application Technical Report Update
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4.10.2 New Instrumentation and Controls...........................................................................................4-20
4.11 Electrical ................................................................................................................................................................4-22
4.11.1 Codes, Regulations, and Standards ..........................................................................................4-22
4.11.2 Distribution System.........................................................................................................................4-22
4.11.3 Standby Power Distribution System .........................................................................................4-23
4.11.4 Design Criteria...................................................................................................................................4-23
5. Supervisory Control and Data Acquisition System....................................................................................5-1
5.1 Control System.......................................................................................................................................................5-1
5.2 SCADA System Platform Evaluation..............................................................................................................5-1
5.2.1 PLC Hardware ............................................................................................................................................5-2
5.2.2 HMI Software .............................................................................................................................................5-2
5.3 SCADA Design Standards...................................................................................................................................5-2
5.3.1 In-Plant Communications.....................................................................................................................5-3
5.3.2 Control Logic Programming Standards ..........................................................................................5-6
5.3.3 HMI Graphic Standards..........................................................................................................................5-6
6. Permitting............................................................................................................................................................6-1
7. Construction Cost Estimate .............................................................................................................................7-1
7.1 Cost Estimate Results ..........................................................................................................................................7-1
8. References ...........................................................................................................................................................8-1 Appendices
A New Tagging Standard for Instrumentation and Equipment B Administrative Draft Initial Study and Proposed Mitigated Negative Declaration C Geotechnical Investigation Data Report (SHN)
Tables
1-1. Effluent Limits .......................................................................................................................................................1-2 1-2. Effluent Criteria .....................................................................................................................................................1-3 1-3. Influent Flows and Loadings for 2050.............................................................................................................1-4 2-1. Capital Cost Assumptions ...................................................................................................................................2-2 2-2. O&M Cost Assumptions .......................................................................................................................................2-2 2-3. Capital Cost Estimates for Effluent Criteria 1 ................................................................................................2-3 2-4. O&M Cost Estimates for Effluent Criteria 1 ....................................................................................................2-3 2-5. Life Cycle Cost Factors .........................................................................................................................................2-3 2-6. Life Cycle Cost Estimates for Effluent Criteria 1............................................................................................2-3 2-7. Non-economic Evaluation Criteria and Weighting .......................................................................................2-4 Funding Application Technical Report Update
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2-8. Non-economic Scores – Effluent Criteria 1.....................................................................................................2-5 2-9. Non-economic Weighted Scores – Effluent Criteria 1..................................................................................2-5 2-10. Project Costs ........................................................................................................................................................2-7 3-1. Design Criteria of Existing Influent Flow Equalization Pond......................................................................3-2 3-2. Flow Equalization Pump Sizing .........................................................................................................................3-2 3-3. Process Sizing Assumptions...............................................................................................................................3-3 3-4. Projected MLE Process Performance at the 2050 MMWW Condition ......................................................3-4 3-5. Results from the State Point Analysis for the Secondary Clarifiers..........................................................3-5 3-6. Process Design Criteria for Aeration Basins ...................................................................................................3-6 3-7. Aeration Basin Sizing ...........................................................................................................................................3-6 3-8. Aeration Basin Associated Equipment.............................................................................................................3-6 3-9. Air Demands...........................................................................................................................................................3-7 3-10. Aeration System Equipment............................................................................................................................3-8 3-11. Blower Equipment Design Criteria .................................................................................................................3-8 3-12. Design Criteria for RAS/WAS Pumps .............................................................................................................3-9 3-13. RAS Pump Sizing ................................................................................................................................................3-9 3-14. WAS Pump Sizing ...............................................................................................................................................3-9 3-15. Design Criteria for Magnesium Hydroxide System ................................................................................. 3-10 3-16. Chemical Metering Pump and Storage Sizing.......................................................................................... 3-10 3-17. WAS Storage Equipment Sizing ................................................................................................................... 3-12 3-18. Filtrate Storage Equipment Sizing .............................................................................................................. 3-12 3-19. WAS and Filtrate Storage Tanks Blower Equipment Design Criteria .................................................. 3-12 4-1. Hazardous Material Requirements (Outdoor Storage Control Area) .......................................................4-5 4-2. Lateral Earth Pressure Criteria for Buried Structures ...................................................................................4-7 4-3. Design Criteria for Live Loads at the Aeration Basin Platform ..................................................................4-9 4-4. Design Criteria for Snow Loads..........................................................................................................................4-9 4-5. Design Criteria for Wind Loads ....................................................................................................................... 4-10 4-6. Design Criteria for Seismic Load .................................................................................................................... 4-10 4-7. Construction Materials for Proposed Facilities........................................................................................... 4-11 4-8. Design Conditions for Indoor Spaces ............................................................................................................ 4-18 4-9. Equipment Utilization Voltages ..................................................................................................................... 4-23 4-10. Demand Factors............................................................................................................................................... 4-24 7-1. Estimate Summary for City of Fortuna WWTP ...............................................................................................7-1 Funding Application Technical Report Update
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Figures
1-1. Fortuna WWTP Process Flow Diagram Schematic.........................................................................................1-2 2-1. Summary of Benefit to Normalized NPV Cost for the Effluent Criteria 1 Alternatives ........................2-6 3-1. Layout of the WAS Storage Tank and Filtrate Storage Tank ................................................................... 3-11 4-1. Existing Standing Seam Metal Roof (Digester Building) ............................................................................4-4 5-1. Logical and Conceptual Network Frameworks ..............................................................................................5-4 5-2. Representation of SCADA Environment Separation from Enterprise Systems and Internet .............5-5 5-3. Collapse Core OT Network ..................................................................................................................................5-6 Funding Application Technical Report Update
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Acronyms and Abbreviations
°C degree(s) Celsius
°F degree(s) Fahrenheit
ACI American Concrete Institute
ADM Aluminum Design Manual
ANSI American National Standards Institute
ASCE American Society of Civil Engineers
ASME American Society of Mechanical Engineers
ASTM ASTM International
AWG American wire gauge
BOD5 5-day biological oxygen demand
BODR Basis of Design Report
CBC California Building Code
C&D construction and demolition
CPT cone penetrometer test
DO dissolved oxygen
E+H Endress and Hauser AG
FEB flow equalization basin
ft foot(feet)
ft2square foot(feet)
gpm gallon(s) per minute
H2S hydrogen sulfide
HMI human-machine interface
HOA hand-off-auto
hp horsepower
HVAC heating, ventilation, and air conditioning
IACS industrial automation and control systems
ICEA Insulated Cable Engineers Association
ISA Instrument Society of America
lb/d pound(s) per day
LCP local control panel
MCC motor control center
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mgd million gallon(s) per
MLE Modified Ludzack-Ettinger
MLR mixed liquor return
MLSS mixed liquor suspended solids
MMWW maximum month wet weather
NAVD88 North American Vertical Datum of 1988
NEC National Electrical Code
NEMA National Electrical Manufacturers Association
NFPA National Fire Protection Association
NPDES National Pollutant Discharge Elimination System
O&M operations and maintenance
OT operational technology
PE primary effluent
pcf pound(s) per cubic foot
psf pound(s) per square foot
psi pound(s) per square inch
PLC programmable logic controllers
PVC polyvinyl chloride
RAS return activated sludge
Regional Board North Coast Regional Water Quality Control Board SCADA Supervisory Control and Data Acquisition
SLR solids loading rate
SOR surface overflow rate
SPA state point analysis
SRT solids retention time
THW thermoplastic heat and water-resistant
TP total phosphorus
UL Underwriters Laboratory
VFD variable frequence drive
WAS waste activated sludge
WW wet weather
WWTP Wastewater Treatment Plant
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1. Introduction
This Technical Report Update summarizes the various design upgrades at the City of Fortuna’s (City) Tom Cook Memorial Wastewater Treatment Plant (WWTP). This report comprises information from the detailed design phase of the National Pollutant Discharge Elimination System (NPDES) Compliance Project (Project). The report has been developed by Jacobs on behalf of the City to support its Clean Water State Revolving Fund application.
1.1 Background Information
The Tom Cook Memorial Wastewater Treatment Plant (WWTP) is at 180 Dinsmore Drive in Fortuna, Humboldt County, California. Owned and operated by the City of Fortuna (City), this facility serves a population of approximately 12,500, which includes residential, commercial, and institutional users in the City.
1.2 Existing Process Description
The WWTP facility is divided into a liquids treatment system and solids treatment system. The liquids treatment system consists of the following:
▪ Pretreatment at headworks
▪ Influent pump station
▪ Primary clarification
▪ Secondary biological treatment with partial nitrification (based on the interim NPDES permit) ▪ Disinfection
The solids treatment system consists of the following:
▪ Thickening
▪ Anaerobic digestion
▪ Dewatering
▪ Composting
Primary sludge is thickened in the primary clarifiers, and waste activated sludge (WAS) from secondary treatment is thickened over a gravity belt thickener before being pumped to the digester. The WWTP operates one mesophilic anaerobic digester. The digested sludge is dewatered using a belt filter press.
The dewatered biosolids are then sent to the composting facility to produce Class A biosolids. Filtrate from the gravity belt thickener and belt filter press can be returned back either to primary clarifiers or aeration basins for further treatment. Figure 1-1 shows a schematic process flow diagram of the WWTP.
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Figure 1-1. Fortuna WWTP Process Flow Diagram Schematic
1.3 Effluent Discharge Requirements (Current and Anticipated) The WWTP currently operates under NPDES Permit CA0022730 Order No. R1-2017-0005. The permit expired on October 30, 2022, and is currently under administrative extension while the permit application is being renewed. The permit introduced interim and final limits on nutrients, specifically ammonia and nitrate as shown in Table 1-1.
These limits were to be reduced to the final values once the upgrades to the WWTP were complete or December 31, 2024, whichever came first, in accordance with Time Schedule Order R1-2017-0026 issued by the North Coast Regional Water Quality Control Board (Regional Board). This deadline has been further extended to December 31, 2027, to meet the requirements of the Time Schedule Order.
Table 1-1. Effluent Limits
Parameter
Interim Effluent Limits Final Effluent Limits
Average Monthly Maximum Daily Average Monthly Maximum Daily Ammonia 9.4 mg-N/L – 3.6 mg-N/L 9.6 mg-N/L
Nitrate 32 mg-N/L – 10 mg-N/L –
mg-N/L = milligrams per liter Nitrogen
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While the City must meet the above effluent limits, there have been indications from the Regional Board that the City may be subject to even more stringent nutrient limits in the future, including for phosphorus.
It is possible that more stringent limits may be required of all dischargers to the Eel River, or the City may be required to achieve lower limits to continue their current practice of summertime discharge to their percolation ponds.
Given the uncertainties with the nutrient limits, Jacobs developed two different effluent criteria for nitrogen and phosphorus. Effluent Criteria 1 is based on the NPDES permits for ammonia and nitrate and does not include phosphorus. Effluent Criteria 2 is more stringent for nitrogen and includes a limit for phosphorus. The limits for both effluent criteria are summarized in Table 1-2. Effluent Criteria 1 are the basis of design for the Project, with the ability to expand the WWTP to meet Effluent Criteria 2, if effluent limits become more stringent in the future.
Table 1-2. Effluent Criteria
Criteria Ammonia Nitrate Total Nitrogen
Total
Phosphorus
Effluent Criteria 1 <1 mg-N/L 10 mg-N/L 12 mg-N/L –
Effluent Criteria 2 <1 mg-N/L 1 mg-N/L 3 mg-N/L 0.45 mg-P/L mg-N/L = milligrams per liter Nitrogen
mg-P/L = milligrams per liter Phosphorus
1.4 NPDES Compliance Project
The City will be implementing the Project for the following reasons:
▪ Comply with new permit requirements
▪ System reliability and redundancy
▪ Repair or upgrade obsolete equipment
▪ Energy efficient system
▪ Reduce reliance on fossil fuels
This Project will upgrade the secondary treatment processes to include enhanced biological nutrient removal (BNR) by modifying the process configuration to a Modified Ludzack-Ettinger process. Other upgrades include automation of the flow equalization system, new automatic dissolved oxygen control system and motorized inlet valves for the blowers for energy efficiency. The City will also be upgrading the supervisory control and data acquisition (SCADA) system as part of this Project, as several components have reached their end of useful life and are experiencing repeated failures. The upgrades will optimize and enhance the treatment efficiency thus improving the effluent quality prior to surface water discharge.
1.5 Design Flows and Loadings
The design flows and loads were developed in the Project Definition Report (Jacobs 2025). Because the WWTP has different effluent discharge points, the projections have been split to show dry weather and wet weather (WW) conditions separately. Table 1-3 summarizes the design flows and loads for 2050 used in this Project. For the biological process sizing, the maximum month wet weather (MMWW) condition is used. MMWW flows and loads are higher than the maximum month dry weather conditions, and combined with lower water temperatures, results in a larger bioreactor volume to accommodate the slower biomass growth.
The projected peak hourly flow to the WWTP is estimated to be 7.6 million gallons per day (mgd).
However, any flows beyond 4 mgd will be diverted to the flow equalization basin (FEB) after the influent Funding Application Technical Report Update
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pump station. Equipment sizing based on hydraulics will be evaluated whether the hydraulics are upstream or downstream of the flow diversion to the FEB.
Table 1-3. Influent Flows and Loadings for 2050
Parameter
Dry Weather Wet Weather
Average
Maximum
Month Average
Maximum
Month
Flow, mgd 1.19 1.25 1.87 3.13
Chemical Oxygen Demand, lb/d 8,328 9,201 10,264 13,944
BOD5, lb/d 3,996 4,382 4,887 6,640
Total Suspended Solids, lb/d 3,709 4,574 5,579 7,910
Volatile Suspended Solids, lb/d 3,153 3,888 4,742 6,723 Ammonia-Nitrogen (NH3-N), lb/d N 337 372 343 467
Total Kjeldahl Nitrogen, lb/d N 477 527 558 758
Total Phosphorus (TP), lb/d P 74 82 74 151
Alkalinity, mg CaCO3 per Liter 260 150
Average Influent Temperature, °C 23 13
Bold indicates the design flows and loadings used in this Project. °C = degree(s) Celsius
BOD5 = 5-day biological oxygen demand
CaCO3 = calcium carbonate
lb/d = pound(s) per day
mg = milligram(s)
N = nitrogen
NH3-N = ammonia-nitrogen
P = phosphorous
TP = total phosphorous
1.6 WWTP Upgrades
The primary driver of this Project is to provide a treatment system that will comply with the Effluent Criteria 1 nutrient limits. The upgrades at the WWTP include the following:
▪ Abandon existing aeration basins and add new aeration basins. This is to convert the existing partial nitrification process to a nitrification-denitrification process based on the Modified Ludzack-Ettinger (MLE) process configuration.
▪ Blowers at a new blower facility and removal of existing blowers ▪ Replacement of existing return activated sludge (RAS) and WAS pumps ▪ Lining of existing flow equalization pond (previously called Pond 1) ▪ Automation of the existing flow equalization system.
- Addition of a flow equalization pump station to transfer flow between FEB and primary treatment. ▪ Chemical storage facility for alkalinity
▪ Primary effluent (PE)/RAS mixing box
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▪ WAS storage tank and filtrate storage tank rehabilitation and new blowers associated with these tanks ▪ Complete replacement of supervisory control and data acquisition (SCADA) system for entire WWTP.
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2. Alternatives Evaluation
This section summarizes the alternatives evaluation conducted to select a secondary treatment process alternative to meet NPDES compliance requirements. This section also summarizes the alternatives evaluation conducted during early phases of detailed design to determine the implementation of the selected process.
2.1 Alternatives Evaluation for Project Definition
The Project Definition Report (Jacobs 2025) discusses several alternatives to meet Effluent Criteria 1 as well as Effluent Criteria 2. Various alternatives were presented to the City and an initial screening was conducted based on fatal flaws. A shortlist of alternatives was developed after the initial screening. The list of alternatives considered include:
• Suspended Growth Processes
o Modified Ludzack-Ettinger (MLE)
o Four-Stage Bardenpho
o AeroMod Sequox – Not included for further evaluation since it’s a proprietary process that would lead to sole-sourcing situation with no added performance benefits • Fixed Film Processes
o Integrated Fixed-Film Activated Sludge (IFAS)
o Membrane Aerated Biofilm Reactor (MABR)
o Mobile Organic Biofilm (MOB) – Not included since MOB is relatively new and there are not many installations in the United States using it
• Membrane Processes
o Membrane Bioreactor (MBR) – Not included for further evaluation because of concerns over the increased O&M requirements
The alternatives that were evaluated to meet the current effluent limits and potential future limits included the following:
▪ Suspended growth - MLE
▪ Fixed-film growth – IFAS and MABR
Each nitrogen removal alternative was evaluated using both economic and non-economic factors.
Section 2.1 provides a summary of the capital, O&M, and life cycle costs for each alternative evaluated for Effluent Criteria 1 and Effluent Criteria 2. For the non-economic criteria, the City provided a weighting for each non-economic factor during the workshop held on November 3, 2023. The scores for the noneconomic criteria for each alternative in Effluent Criteria 1 and Effluent Criteria 2 were then completed by the City in the second workshop held on April 26, 2024.
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2.1.1 Economic Evaluation
The total capital cost for building new facilities or retrofitting existing facilities includes construction cost, additional project cost markups, contractor markups, and non-construction cost. The assumptions for estimating the total capital cost are summarized in Table 2-1.
Table 2-1. Capital Cost Assumptions
Parameter Value
Class of Cost Estimate
American Association of Cost Estimators
Class 5
-50% to 100% Error Range
Equipment/Facility Costs Vendor Quotes or from Jacobs
Proprietary Cost Estimating Software
Additional Project Cost (includes sitework, yard piping, electrical, and instrumentation and controls) 18%
Contractor Markups (overhead, profit, bonds/insurance and contingency) 57.5%
Local Adjustment Factor (overall total project factor for translating total cost of project elements from one geographic location to another) 13% Non-construction Cost (engineering, permitting, services during construction) 20%
The O&M costs are annual costs associated with maintaining and operating the WWTP assets. The cost assumptions used in the development of the O&M costs are summarized in Table 2-2. The chemical costs were obtained from potential suppliers, and the unit power cost was provided by the City. It was assumed that no additional WWTP operators will be required for any of the alternatives. The O&M cost breakdown includes equipment power, chemicals, maintenance, repair and replacement, and additional items.
Additional items indicate costs associated with maintenance, repair, and replacement of overall site components of each facility.
Table 2-2. O&M Cost Assumptions
Parameter Value
Sodium hydroxide (supplemental alkalinity, 50% solution) $3.83 per gal (or) $0.30 per lb MicroC (supplemental carbon) $3.78 per gal
Power $0.18 per kilowatt hour
Equipment Maintenance and Repair Cost 2% of project capital cost
2.1.1.1 Capital Cost Estimate
The capital cost associated with each alternative for Effluent Criteria 1 is summarized in Table 2-3.
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Table 2-3. Capital Cost Estimates for Effluent Criteria 1 Parameter
MLE IFAS (Veolia) MABR
Retrofit New Retrofit Retrofit
Project Cost before Markups $16M $19M $16M $15.6M
Capital Cost $43.5M $51.5M $44M $43M
M = million dollars
2.1.1.2 O&M Cost Estimate
The O&M cost associated with each alternative for Effluent Criteria 1 is summarized in Table 2-4.
Table 2-4. O&M Cost Estimates for Effluent Criteria 1
Cost MLE (Retrofit) MLE (New) IFAS (Veolia) MABR
Annual O&M $1.20M $1.25M $1.60M $1.25M
2.1.1.3 Life Cycle Cost Estimate
Estimating and comparing the monetary costs of proposed alternatives were done using the net present value (NPV) analysis. The life cycle cost analysis converts all expenditures that occur during the project into a single equivalent present value sum at the time of the analysis, allowing for a like-to-like comparison. For each alternative, the capital costs and O&M costs were used to derive the NPV over a 20-year period. The factors used in the estimation of the NPV for each alternative are summarized in Table 2-5.
Table 2-5. Life Cycle Cost Factors
Parameter Value
Inflation Rate 3.00%
Discount Rate 5.00%
Evaluation Term 20 years
Table 2-6 lists the life cycle cost for the proposed alternatives to comply with Effluent Criteria 1.
Table 2-6. Life Cycle Cost Estimates for Effluent Criteria 1 Cost Type MLE (Retrofit)a MLE (New)
b
IFASc MABR
Construction Cost $36M $43M $36.5M $35.5M
Annual O&M Cost $1.20M $1.25M $1.60M $1.25M
Total Life Cycle Cost
(20-year) $55.5M $63M $63M $56M
a MLE with existing reactors plus an additional reactor b Existing aeration basins are abandoned. Construct new aeration basins. c IFAS system from Veolia
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2.1.2 Non-Economic Evaluation
The relative importance of the non-economic factors was used to weight criteria when evaluating the alternatives for Effluent Criteria 1. Each factor was weighted based on importance from highest to lowest, where 10 is the highest and 1 is the lowest. The weighting percentages were then determined by dividing the weighting score for each factor by the total weighting score.
Table 2-7 provides a brief description of each non-economic factor and the associated weighting score.
The weighting was provided by the City. Based on the scoring, the permit compliance and system reliability were ranked the most important, while the chemical usage and maturity of treatment technology were ranked comparatively lower.
Table 2-7. Non-economic Evaluation Criteria and Weighting Factor Description Weighting
Weighting
Percentage
Adaptability/
Phasing
How easily can the process/alternative be upgraded for
future conditions or requirements (e.g., changes to flows, loads, future regulations, co-digestion)
How easily can the alternative be phased in to meet the City’s needs over time in an economical time frame
9 18.4%
Constructability/
Footprint
What would be the extent of modifications to the existing processes resulting from the alternative. How large of a footprint is required.
8 16.3%
Chemical Usage
Does the alternative use lesser or greater number and
quantity of chemicals.
Is the supply chain reliable.
Any operational hazards (e.g. methanol, caustic soda).
7 14.3%
Permit Compliance/
System Reliability
How reliably will the alternative meet permit and other regulatory requirements.
If part or all of the process fails, how impactful would the consequences be. Does the system minimize risks.
10 20.4%
Maturity of
Treatment
Technology
Does the alternative use a proven process (in terms of
years) since the process or alternative was developed. What is the number of successful installations Are there
equivalent sized installations and known reliability of the alternative in the industry.
7 14.3%
Ease of O&M
How easily can each alternative be operated/automated to simplify O&M monitoring and management.
How maintainable would the system be.
How many operators would be needed. Would training or
expertise be needed.
8 16.3%
During the alternatives evaluation workshop held on April 26, 2024, City staff determined the scoring for the non-economic criteria developed in Table 2-7 for the proposed alternatives for Effluent Criteria 1 and Effluent Criteria 2. The scoring was based on a minimum of 1 and maximum of 10, where 10 indicates most favorable and 1 indicates least favorable among the alternatives. The raw scores and weighting for Funding Application Technical Report Update
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each factor from Table 2-7 were used to determine the weighted score for comparison. The total benefit for an alternative is the sum of individual criterion scores multiplied by their respective weightings to produce a weighted benefit score.
Table 2-8 and Table 2-9 present the raw scores and weighted scores for all the alternatives in Effluent Criteria 1.
Table 2-8. Non-economic Scores – Effluent Criteria 1
Criteria MLE (Retrofit)
MLE
(Greenfield) IFAS (Veolia) MABR
Adaptability/ Phasing 7 7 7 8
Constructability/ Footprint 6 3 4 6
Chemical Usage 5 5 5 7
Permit Compliance/ System
Reliability 9 9 9 9
Maturity of Treatment
Technology 10 10 8 3
Ease of O&M 9 9 6 6
Table 2-9. Non-economic Weighted Scores – Effluent Criteria 1 Criteria
Criteria
Weighting MLE (Retrofit) MLE (Greenfield)
IFAS
(Veolia) MABR
Adaptability/ Phasing 18.4% 1.29 1.29 1.29 1.47
Constructability/
Footprint 16.3% 0.98 0.49 0.65 0.98
Chemical Usage 14.3% 0.71 0.71 0.71 1.00
Permit Compliance/
System Reliability 20.4% 1.84 1.84 1.84 1.84
Maturity of Treatment
Technology 14.3% 1.43 1.43 1.14 0.43
Ease of O&M 16.3% 1.47 1.47 0.98 0.98
Weighted Score 7.71 7.22 6.61 6.69
2.1.3 Total Benefit Scoring for Alternatives
The comparison of alternatives was conducted using a benefit-to-cost ratio. The benefit-to-cost rating of an alternative was determined by dividing the total weighted benefit score by its normalized NPV cost. The normalized NPV cost for each alternative is the NPV cost of that alternative divided by the lowest NPV cost among the alternatives for that effluent criterion.
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The bar graph for each alternative illustrates the weighted score, along with each category from which the score was earned. The green line represents the ratio of benefit to normalized NPV cost.
Figure 2-1 shows the benefit-to-cost ratio and the total weighted score for each alternative evaluated for Effluent Criteria 1. The MLE (retrofit) has the highest non-economic weighted benefit and the highest benefit-to-cost ratio among Effluent Criteria 1 alternatives.
Figure 2-1. Summary of Benefit to Normalized NPV Cost for the Effluent Criteria 1 Alternatives
2.1.4 Recommended Secondary Treatment Alternative
The results of the nitrogen removal alternatives evaluation for Effluent Criteria 1 were presented to the City on April 26, 2024. The existing secondary treatment will be upgraded to meet Effluent Criteria 1, which is based on the NPDES permit limits and, when required, will expand the secondary treatment to meet Effluent Criteria 2. The benefit -to-cost analysis showed that the conventional MLE had the highest score for Effluent Criteria 1. The City has selected MLE as the preferred alternative for the secondary treatment upgrades.
2.2 Alternatives Evaluation for Detailed Design
As the final benefit to cost ratios for the two MLE options (retrofit or new basins) were relatively close, Jacobs conducted a further evaluation during the detailed design phase, to confirm the optimal design configuration. The following alternatives were evaluated and presented as part of the Aeration Basin Configuration and Equipment Selection Workshop, held on March 18, 2025:
1. Aeration System Design
a. Aeration Basin Configuration
i. Option 1 – Reconfiguring existing aeration basins and construct a fourth aeration basin ii. Option 2 – Abandon existing reactors and build two new reactors b. Seismic Retrofits of existing reactors should be considered or not Funding Application Technical Report Update
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c. Blower Alternatives
d. Mixer Alternatives
e. Diffuser Alternatives
A second workshop was held with the City on April 29, 2025. This workshop focused on the aeration basins design, whether to retrofit existing aeration basins and build one new reactor (Option 1) or construct new aeration basins and abandon the existing ones (Option 2). These two options were compared since the preliminary cost estimate indicated the costs to be within the range of accuracy. A seismic analysis of the baffle wall design in the existing aeration basins was analyzed for Option 1. The results showed that any modifications will require the existing aeration basins to be retrofitted to the current seismic code. The available options for seismic retrofit would either reduce the volume of existing basins or reduce the sidewater depth impacting the efficacy of aeration.
A summary of project cost information is provided on Table 2-10.
Table 2-10. Project Costs
Parameter Option 1 – Construct AB4 and Reuse
Existing Basins*
Option 2- Construct New
Aeration Basins*
Capital Cost a(median) $19.7M $22.00M
Annual O&M b $0.31M $0.16M
O&M (NPV) $4.50M $2.30M
Total NPV (23-yr) $24.20M $24.30M
a Class 5 Construction Cost
b Counts anoxic mixers/MLR/Blower power demands, aeration system repair/replacement, blower repair/replacement *Based on 2025 dollars
The City selected Option 2––abandoning their existing aeration basins and constructing two new aeration basins––to meet Effluent Criteria 1. Although the capital cost for Option 2 is higher than Option 1, the operations and maintenance (O&M) costs were much lower because of lower maintenance requirements and more energy efficiency in Option 2. Additionally, the new aeration basins will be built to the current seismic code and would be more seismically resilient. The City has also selected a hyperbolic mixer to be used in the anoxic zone and submerged membrane disc diffusers to be used in the aerobic zones. Positive displacement blowers were selected as the preferred blower technology.
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3. Treatment Facilities
Section 3 provides details on the treatment facilities being constructed or upgraded as part of this project.
3.1 Automated Flow Equalization
The flow equalization includes the following treatment features:
▪ FEB
▪ Flow equalization pump station
These features equalize flows of screened and degritted wastewater exceeding 4 mgd to minimize the capacity of downstream processes. Influent flow equalization is provided to divert peak flows to minimize the hydraulic capacity of treatment processes downstream of headworks.
At the Headworks facility, upstream of screening, excessive flows will be diverted to the FEB. Flow diversion will occur at the existing 30-inch wide slide gate that will discharge flow to the FEB via an existing 24-inch raw sewage pipe. This slide gate is located upstream of the mechanical bar screen. Flow will be controlled by the addition of an actuator to this slide gate. Once the plant incoming flow is at or exceeds 4 mgd, the slide gate will be lowered. A flow meter to the primary clarifier splitter box will be added and once flow reaches less than 4 mgd, the slide gate will be raised. The FEB pump station will start when the flow going to the primary clarifier splitter box is less than 4 mgd and the basin is at the minimum level to start the pumps to equalize the flow to 4 mgd.
The existing flow equalization is manually operated, which includes a gate upstream of the screens to divert flows to the FEB. The objective of this design is to automate the system. Flow exceeding a certain flow rate that are equalized is defined as the “equalized flow threshold.” Setting the equalized flow threshold low results in a larger equalization volume that would be used more frequently, which allows for smaller treatment processes. Setting the equalized flow threshold high results in smaller equalization that is used less frequently and requires larger downstream processes. No equalization means all treatment processes need to be sized to treat peak flows.
To define both the equalization flow threshold, several idealized storm scenarios were used to simulate the flow to the WWTP and determine the capacity of the existing system and FEB. Using the simulation results and the historical hourly flow data into the plant, the City selected a peak hourly equalization flow threshold of 4 mgd into the WWTP. The 4 mgd equalization flow threshold was maintained for the 2050 condition. This control variable can be set to a different number by the operator, with the maximum being 4 mgd.
Key elements of influent flow equalization include the following:
▪ System automation, which will include flow control valves and flowmeters ▪ Flow-to-FEB from the influent pump station
▪ Flow-to-flow equalization pump station from the flow equalization pond by gravity ▪ Flow to the primary clarifier splitter box from the flow equalization pump station ▪ Uncovered odor control not required (washdown expected after use) ▪ Accessible from above with hose bibs for washdown
▪ Motorized valves to automate the flow equalization system Table 3-1 shows the design basis of the existing flow equalization pond.
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Table 3-1. Design Criteria of Existing Influent Flow Equalization Pond Parameter Value Units
Volume 5.53 MG
Depth 13 ft
Type Lagoon -
Equalization Threshold to
Downstream Processes 4 mgd
- = not applicable
ft = foot(feet)
MG = million gallons
Table 3-2 shows the sizing of the new flow equalization pump station. The hydraulics were calculated using AFT Fathom to model the low-level and high-level conditions of the FEB. Three scenarios were modeled with a low-level, low-capacity; low-level, high-capacity; and high-level, high-capacity to size the pump station. The pump station was determined to have a maximum capacity of 3.3 mgd to equalize to 4 mgd with a low influent plant flow of 0.7 mgd from the load projections, which totals to three duty pumps at 760 gallons per minute (gpm) with one standby pump. The pump station was determined to have a minimum capacity of 0.5 mgd based on the minimum flow speed of the raw sewage.
Table 3-2. Flow Equalization Pump Sizing
Parameter Value Units
Number of pumps 3 (2 Duty, 1 Standby) -
Pump type Submersible Pumps -
Pump capacity 370–740 gpm
TDH 35 max, 15 min, 20 average ft
Motor size 20 hp
hp = horsepower
TDH = total dynamic head
3.2 Secondary Treatment
Secondary treatment at the WWTP encompasses biological treatment using an activated sludge process and settling out the sludge using a clarification process. A distribution box collects and mixes the PE and RAS and then distributes the blended influent between the aeration basins. Organic constituents are biologically broken down, and the ammonia is converted to nitrate and then nitrogen gas by the activated sludge process. The suspended growth biological flocs of the activated sludge process are called mixed liquor suspended solids (MLSS). The MLSS is separated by gravity settling in the secondary clarifiers.
Secondary effluent from the clarifiers is then sent to the disinfection process. Settled sludge is pumped back to the aeration basins using the RAS pumps. A portion of the sludge is wasted out as WAS, which is sent to the solids treatment for further processing.
3.2.1 Primary Effluent/Return Activated Sludge Mixing Box The existing PE/RAS box will be abandoned, and a new PE/RAS box will be constructed in this Project to split the flows to the two new aeration basins. This distribution box will receive the PE from the primary clarifiers as well as the RAS from the RAS pump station.
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The mixing box will share a wall with the influent distribution channel of the aeration basins. PE and RAS will mix in a common volume before being distributed to the aeration basins through respective weirs.
Alkalinity control by the addition of magnesium hydroxide will occur in the common volume as well. The structure will include space for distribution to a future third aeration basin.
3.2.2 Aeration Basins
3.2.2.1 Process Modeling Results
The model for the WWTP upgrades was constructed using SUMO, a commercially available, whole-plant, dynamic simulator software by Dynamita. Model calibration and validation were completed in the Project Definition Report (Jacobs 2025). The Project Definition Report evaluated several alternatives for the nutrient removal, and the City selected MLE process as the preferred alternative to move forward for the detailed design. During detailed design, the process model was used to optimize the aeration basin performance and determine the air demands and secondary clarifier performance. This section summarizes the results of the process model for 2050 MMWW, which was selected as the design year.
The 2050 MMWW influent flows and loads described in Table 1-3 were used to determine the aeration basin volume and air demand. Effluent criteria 1 described in Table 1-2 were used for nitrogen limits. The process sizing assumptions are summarized in Table 3-3..
Table 3-3. Process Sizing Assumptions
Criteria Value Comments
Process Configuration MLE
Primary Clarification TSS Removal
Performance 60%
Zone Fractions 15/85 Anoxic volume / aerobic volume
Minimum Sustained Temperature 13°C
Target MLSS 3,555 mg/L At maximum month conditions
Aerobic SRT 10 days Including a nitrification safety factor of 2.5 MLR Rate 300% Percentage of bioreactor influent flow
SVI 150 mL/g
RAS Rate 80% Percentage of bioreactor influent flow
MLSS = mixed liquor suspended solids
SRT = solids retention time
SVI = sludge volume index
TSS = total suspended solids
The projected treatment performance is summarized in Table 3-4. .
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Table 3-4. Projected MLE Process Performance at the 2050 MMWW Condition Criteria Value Comments
Total Bioreactor Volume 1.2 MG
MLSS 3,555 mg/L Maximum MLSS design criteria
Effluent BOD5 3.2 mg/L
Effluent TSS 10 mg/L Assumed (model input)
Effluent NH3-N 0.41 mg N/L
Effluent NO3-N 4.0 mg N/L
Effluent pH 6.7
Effluent Total Nitrogen (TN-N) 6.1 mg N/L
Effluent Total Phosphorus (TP-P) 3.7 mg P/L
Primary Sludge Flow Rate 25,419 gpd
Primary Sludge TS 4,666 lb/d At 2.2% TS
WAS Flow Rate 41,528 gpd
WAS TS 2,768 lb/d Wasted from RAS to solids treatment
Total Aeration Demand 1,424 scfm
Supplemental Alkalinity Demand 100 gpd Assumed Magnesium Hydroxide slurry (60% concentration)
gpd = gallon(s) per day
scfm = standard cubic foot per minute
TS = total solids
WAS = waste activated sludge
The performance of the existing secondary clarifiers was evaluated using the SUMO process model along with Jacobs PClarifier tool. PClarifier uses solid flux theory and state point analysis (SPA) to determine the limiting conditions on the clarifier (solids or hydraulic loading).
The two key parameters to determine the clarifier capacity are surface overflow rate (SOR) and solids loading rate (SLR). Typically, the design SOR at the peak flow is set to be 1,200 gpd per square foot (ft2) or less (WEF 2018). For the SLR, it is typical for newly constructed and well-designed clarifiers to be sized so that the design SLR is below 90% of the theoretical maximum to account for the collector inefficiencies in actual installations. For older and shallow clarifiers like those in operation at the WWTP, Jacobs typically set the effective SLR limits at approximately 70% of the theoretical limits. The calculations for SOR and SLR are derived from the SPA.
As shown in Table 3-5, the projected SLR at design conditions with two existing secondary clarifiers in service would exceed the effective limit of 70% at the design condition, indicating that an additional secondary clarifier will be required for the design conditions. Whereas with 1.2 MG total reactor volume, the two secondary clarifiers are projected to be at capacity when the MMWW flow is around 3 mgd and influent BOD5 is 6,000 lb/d. According to the projections defined in the Project Definition Report (Jacobs 2025), this will occur in 2047. Therefore, the construction of the third secondary clarifier will be deferred until the actual loading increases near the projected loading. With three secondary clarifiers, the SLR at the design condition is 65% of the theoretical limit, indicating three clarifiers will be sufficient for the 2050 MMWW conditions.
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Table 3-5. Results from the State Point Analysis for the Secondary Clarifiers Output Parameter
2050 MMWW (Two
Secondary Clarifiers)
2050 MMWW (Three
Secondary Clarifiers) Comments
SOR 552 gpd/ft2 368 gpd/ft2
SLR 29 lb/d/ft2 19 lb/d/ft2
Limiting SLR 39 lb/d/ft2 30 lb/d/ft2
Maximum lb of solids that
can be loaded in the
secondary clarifiers
Percentage of SLR to
Limiting SLR 74% 65% Less than 70% of limiting SLR
3.2.2.2 Design
The aeration basins are configured and sized to provide organic removal, nitrification, and denitrification.
During the alternatives analysis carried out in the Project Definition Report (Jacobs 2025), the City selected the MLE configuration to meet Effluent Criteria 1. The MLE configuration consists of a pre-anoxic zone and aerobic zone. In the MLE process, a mixed liquor return (MLR) is included to feed nitrate to the anoxic zone directly from the aerobic zone, in addition to the nitrate from the recirculating RAS. The MLR ratio will range from 2 to 4 times the influent flow. Mixers will be installed in the anoxic zone to keep the solids in suspension.
An alternatives evaluation was carried out to determine whether to modify existing basins to the MLE configuration or to construct two new basins (Section 2). The City has selected to go with constructing two new aeration basins––Aeration Basin 4 and Aeration Basin 5––and abandoning the existing basins. The existing basins will be decommissioned until they need to be demolished for future expansion of the aeration basins and construction of additional secondary clarifiers. The sizing of the aeration basins is based on the 2050 MMWW conditions (described in Table 1-3). The theoretical minimum aerobic solids retention time (SRT) required at a water temperature of 13°C was estimated to be 4 days (C.P. Leslie Grady Jr. et al. 2011). A nitrification safety factor of 2.5 was applied to this theoretical minimum aerobic SRT to get the design aerobic SRT of 10 days. Only one aeration basin will need to be online in the dry weather season, allowing other aeration basins to be maintained. During WW conditions, both aeration basins will need to be operational. The process design criteria for the aeration basins and aeration basin sizing are presented in Table 3-6. and Table 3-7, respectively.
Table 3-8 presents the equipment to be installed in the aeration basins. One baffle will be installed in this Project to create the anoxic/aerobic zones for the MLE configuration. If in the future more stringent effluent nitrogen or phosphorus limits are included in the NPDES permit, additional baffle walls can be constructed in these new aeration basins to convert them to a four-stage Bardenpho. Additional reactor volume may be required in this scenario, which will be determined in the future. Each aeration basin includes a submersible pump to pump MLR from the end of the aerobic zone to the start of the anoxic zone. One shelf spare will be included for the MLR pump in this Project. One hyperboloid mixer will be installed in each anoxic zone.
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Table 3-6. Process Design Criteria for Aeration Basins
Parameter Value Units
Configuration type MLE (Plug Flow) -
Zones 1-Anoxic/1-Aerobic -
Design Year 2050 MMWW -
Treatment Volume Required 1.20 MG
Anoxic Zone Fractions 15 % of total volume
Mixed Liquor Recycle Flow from Aerobic
Zone to Anoxic Zone
200–400 % of bioreactor influent flow with a
maximum flow of 12 mgd
Minimum sustained temperature,
(assumed) 13 °C
DO Setpoint 2 mg/L
Aerobic SRT/total SRT 10/12 days
MLSS range at 2050 MMWW loading 3,500 mg/L
DO = dissolved oxygen
mg/L = milligram(s) per liter
Table 3-7. Aeration Basin Sizing
Parameter Value Units
Number of Aeration Basins 2 -
Volume per Aeration Basin 600,000 gal
Volume of Anoxic Zone per Aeration Basin 90,000 gal
Volume of Aerobic Zone per Aeration Basin 510,000 gal
Width of Aeration Basin, each 22.25 ft
Length of Anoxic Zone, each 24.58 ft
Length of Aerobic Zone, each 139.33 ft
Depth (Side Water) 22 ft
Freeboard 3 ft
gal = gallon(s)
Table 3-8. Aeration Basin Associated Equipment
Parameter Value Units
Baffle Wall 1 -
Anoxic Zone Mixers, per Aeration Basin 1 -
Mixer Type Hyperboloid -
Anoxic Zone Mixer Motor Size 1.5 hp
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Parameter Value Units
Drive Type Constant Speed -
Mixed Liquor Recycle Pump, per Aeration Basin 1 -
Mixed Liquor Recycle Pump Type Submersible
Mixed Liquor Recycle Pump Capacity, each 4/6 mgd
Mixed Liquor Recycle Pump TDH, each 10/16 feet
Mixed Liquor Recycle Pump Motor Size, each 35 hp
Drive Type Adjustable Speed -
DO Probe, per Aeration Basin 2
The performance of existing Secondary Clarifier 4 and Secondary Clarifier 5 were evaluated using the SUMO process model along with Jacobs PClarifier tool. PClarifier uses solid flux theory and SPA to determine the limiting conditions on the clarifier (solids or hydraulic loading). The SPA showed that the two existing secondary clarifiers will have sufficient capacity for the MLE process until 2047, when the MMWW influent flow is 2.9 mgd, and BOD5 loading is 6,300 lb/day (Jacobs 2025). The City will need to start planning and designing Secondary Clarifier 6 in 2043 (for MLE process), when the MMWW influent flows reach 2.8 mgd and BOD5 loading of 5,900 lb/day (Jacobs 2025). If more stringent limits are included in the NPDES permit earlier, then Secondary Clarifier 6 will be needed with the four-stage Bardenpho process.
3.2.3 Aeration System
Air required to oxidize the organic constituents will be supplied by positive displacement blowers and distributed within the aerobic zone by submerged diffusers.
The diffusers will be membrane type with a higher density of diffusers at the start of the aerobic zone tapering down to a low density of diffusers at the end of the aerobic zone. Low-pressure air from the new blowers will be distributed to each aeration basin. Airflow at each aeration basin will be split into three diffuser grids. This split is done to make it easier to modify the diffuser grid if the aeration basins need to be converted to a four-stage Bardenpho. All air flow splits will be actively controlled using motorized butterfly flow control valves and thermal mass flow measurement. Table 3-9 summarizes the air demand for different scenarios, and Table 3-10 summarizes the aeration system equipment.
Table 3-9. Air Demands
Design Condition Value Units
Peak Flow Air Demand a 1,738 scfm
2050 Max Month Wet Weather Air Demand 1,424 scfm
2050 Max Month Dry Weather Air Demand 961 scfm
Minimum Air Demand 293 scfm
a Based on the maximum influent flow of 4 mgd and 2050 MMWW loadings scfm = standard cubic foot(feet) per minute
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Table 3-10. Aeration System Equipment
Parameter Value Units
Type Submerged Diffuser. Membrane Disk Type -
Material Membrane Type -
Number of Diffusers in each Aeration Basin 348 -
The existing blowers are single-speed, multi-stage centrifugal blowers housed in the blower building.
Because Aeration Basin 4 and Aeration Basin 5 are deeper than the existing aeration basins, the existing blowers cannot supply air at the required pressure. Therefore, new blowers are needed in this Project.
The new blowers will be housed outdoors under a canopy close to the new aeration basins. Three positive displacement rotary screw-type blowers (2 duty + 1 standby) will be provided. Each blower will include suction filters, control panel, a variable-frequency drive (VFD), temperature and pressure sensors, silencers, and a check valve. Isolation valves will be provided on the suction and discharge side of each blower. The compressed air will flow out of the blower and into the header, from where it will flow into the aeration basins. Table 3-11 summarizes the design criteria for the blowers.
Table 3-11. Blower Equipment Design Criteria
Parameter Value Units
Blower type Positive Displacement (Screw-type) -
Number of aeration blowers 3 (2 Duty/1 Standby) -
Maximum Capacity per Blower 1,115 scfm
Turndown 70 %
Discharge pressure required 11 psi
Blower power 50 hp
Drive Type Adjustable Speed -
psi = pound(s) per square inch
3.2.4 RAS/WAS Pumping
The RAS/WAS pump station is a complete replacement of the existing system in order to increase the capacity of the RAS pump station. The existing pump station can only provide up to a total of 2.3 mgd.
RAS pumping is designed to be flow paced based on the influent flow at a rate of 50 to 100% of the maximum month flow. Each secondary clarifier will have a dedicated RAS pump and a swing RAS pump that can serve either secondary clarifier. The RAS will be pumped to the PE/RAS mixing box. Two WAS pumps are in a duty/standby configuration at the station. The WAS pumps are also connected to the suction header of the RAS pumps. When sludge needs to be wasted, the WAS pumps will be continuously discharging to the existing WAS storage basin.
The design criteria for the RAS and WAS pumps is provided in Table 3-12, Table 3-13 and Table 3-14 summarize the pump sizing for the RAS and WAS pumps, respectively.
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Table 3-12. Design Criteria for RAS/WAS Pumps
Parameter Value Units
RAS rate 0.73 to 3.13 mgd
WAS Flows (min to max) 29,100 to 43,800 gpd
WAS Concentration (min to max) 4,000 to 7,100 mg/L
WAS Loads (min to max) 1,027 to 2,550 lb/d
Table 3-13. RAS Pump Sizing
Parameter Value Units
Number of pumps 3 (2 Duty, 1 Standby) -
Pump type Horizontal End Centrifugal Screw Pump -
Pump Capacity Min 609, Max 1,089, Average 763 gpm
TDH 36 ft
Motor size 20 hp
Table 3-14. WAS Pump Sizing
Parameter Value Units
Number of pumps 2 (1 Duty, 1 Standby) -
Pump type Hose Pump -
Pump Capacity 20–30 gpm
TDH 10 ft
Motor size 5 hp
3.2.5 Chemical Feed and Storage
Supplemental alkalinity will be dosed in the aeration basins to offset alkalinity consumed because of nitrification. Magnesium hydroxide slurry will be used for alkalinity addition. The slurry will be dosed into the RAS pipe (entering the new PE/RAS mixing box) by means of an injection quill. The chemical dosing system for magnesium hydroxide will be situated outdoors and will consist of a storage tank, one peristaltic chemical metering pumps skids (1 duty, 1 standby), and the facility curb providing drip containment. The dosing pumps will be housed under a canopy.
Magnesium hydroxide slurry required (as CaCO3) was calculated for the startup and design year for various flow conditions, factoring in the incoming alkalinity in the plant influent (as CaCO3). The flow condition requiring the most alkalinity addition (2050 average WW) was chosen as the basis of design for the chemical dosing system. Approximately 1,800 gallons of storage volume is required for 28 days for the 2050 average WW conditions. The magnesium hydroxide storage tank (9 ft diameter, 10 ft straight sidewall height) is designed for a working volume of ~4,750 gallons. This capacity provides up to 74 days of storage at average WW influent flowrate. Chemical dosing will be flow paced and will vary based on influent flow.
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Magnesium hydroxide slurry is nonhazardous and noncorrosive, making it safe to handle. It is still classified as an irritant, and safety glasses and gloves are recommended for handling. The slurry can freeze in cold weather (less than or equal to 5°C). Hence, the storage tank will be equipped with a topentry vertical mixer to keep the slurry in suspension, and the dosing pumps suction and discharge lines will be heat-traced to prevent clogging in pipelines.
The design basis for the magnesium hydroxide system is shown in Table 3-15. Magnesium hydroxide storage and equipment sizes are presented in Table 3-16.
Table 3-15. Design Criteria for Magnesium Hydroxide System Parameter Value Units
Dosing control strategy Flow paced (Influent Flow) -
Magnesium hydroxide strength 60 %
Magnesium hydroxide product density 12.5 lb/gallon
Minimum dosing rate
(at 2028 avg. DW conditions) 0.5 gph
Maximum dosing rate
(at 2050 avg. WW conditions) 2.6 gph
Dosing location PE/RAS Mixing Box -
Storage location Outdoors -
28-day storage volume needed for 2050 avg. WW
conditions ~1,800 gal
Days of storage (at 2050 average WW conditions) 74 days DW = dry weather
gph = gallon(s) per hour
Table 3-16. Chemical Metering Pump and Storage Sizing
Parameter Value Units
Number of pumps 1/1 Duty/Standby
Pump type Peristaltic metering -
Number of storage tanks 1 (flat-bottom vertical tank) - Size per storage tank 4,750 gal
Sodium hypochlorite chemical (12.5%) will be required for foaming control in the aeration basins on an as-needed basis. The chemical aids in settling by destroying the filaments responsible for foaming. Since sodium hypo can has a short shelf life (3-6 months) and is required rarely, a permanent storage setup has not been provided. Space has been allocated outside the chemical facility, on the south side next to the aeration basins, to temporarily install a 55-gallon sodium hypo drum, a chemical metering pump, and a 66-gallon spill containment pallet, whenever the chemical is required for foaming control. A permanent piping connection to connect the sodium hypo metering pump to the aeration basins has been provided.
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3.2.6 WAS and Filtrate Storage Upgrades
The WWTP has three existing tanks: one for WAS storage and the other two for storing and equalizing the filtrate produced by the thickening and dewatering processes. Figure 3-1 shows the layout of these tanks.
Typically, the WWTP only uses one tank for filtrate storage. These tanks are adjacent to the existing aeration basins. The tanks include coarse bubble diffusers for mixing with air supplied from the existing blowers. Because the existing aeration basins and blowers will be decommissioned after this Project, a new blower is needed to supply air to these tanks. The new blower will be a positive displacement type because of the varying liquid levels in the tanks. Actuated valves will be located on the air headers going to each tank to regulate the airflow. The new blower will be housed in the building adjacent to the mixed liquor effluent channel. The coarse bubble diffusers will also be replaced as part of this Project.
Figure 3-1. Layout of the WAS Storage Tank and Filtrate Storage Tank The existing gravity belt thickener feed pumps will continue to draw WAS from the WAS storage tank and send it to the gravity belt thickener. The stored filtrate will be pumped to the primary clarifier influent splitter box.
The WAS storage tank, filtrate tanks, and blower design criteria and process sizing are provided in Table 3-17, Table 3-18, and Table 3-19 respectively.
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Table 3-17. WAS Storage Equipment Sizing
Parameter Value Units
Number of storage tanks 1
WAS tanks operation Coarse Bubble Mixer
WAS storage tank volume 22,000 gal
Average sidewater depth 10 ft
WAS storage capacity < 1 day days
Air demand for mixing 50 scfm
< = less than
Table 3-18. Filtrate Storage Equipment Sizing
Parameter Value Units
Number of storage tanks 2 -
WAS tanks operation Coarse Bubble Mixer -
Filtrate storage tank volume – 95,000
– 73,000
gal
Average sidewater depth 10 ft
Air demand for mixing – 250
– 200
scfm
Table 3-19. WAS and Filtrate Storage Tanks Blower Equipment Design Criteria Parameter Value Units
Blower type Positive Displacement -
Number of blowers 1 -
Capacity per blower 500 scfm
Discharge pressure 5.5 psi
Blower power 20 hp
Drive type Adjustable Speed -
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4. Discipline Design Criteria
This chapter of the BODR provides specific design criteria parameters and details as they relate to the technical disciplines involved in the Project. The stated design criteria have been selected based on the previously stated Project goals and objectives.
4.1 Site Civil
4.1.1 General Description
This section defines and documents the site development. The recommended layout will lead to further development in subsequent design phases. Items addressed in this section include the basis for layout, such as major site features, paving, and site grading, as shown on the drawings.
4.1.2 Codes, Regulations, and Standards
The following codes, standards, and specifications will apply to the site civil and yard piping design. Unless otherwise specifically stated, the latest edition of the codes will apply. ▪ 2024 California Department of Transportation Standard Plans and Specifications ▪ ASTM International (ASTM) Standards
▪ California Building Code (CBC) and Fortuna Municipal Code ▪ California Division of Occupational Safety and Health Construction Safety Orders ▪ California Fire Code
▪ California Plumbing Code
▪ 2018 City of Fortuna – Engineering Division Standard Details ▪ Humboldt Low Impact Development Stormwater Manual
▪ City of Fortuna Stormwater Management Program
▪ California Stormwater Quality Association
4.1.3 Survey
A topographic survey of the site was conducted by Gutierrez Land Surveying in August 2019. In 2021, Jacobs performed a limited survey, documenting the bottom and top elevations of the ponds; outlines of Secondary Clarifiers 1, 2, and 3; filtration tanks; the channel between aeration basin tanks; and the chlorine contact tanks. An additional survey will be carried out to capture existing facilities and site features within the anticipated work areas at the Fortuna WWTP. Existing site features to be verified and calibrated with as-built drawing elevations are as follows:
▪ Pavement on the northern side of Pond 1
▪ Area between the vehicle storage building and the plant building ▪ Space between the primary clarifiers and the grit removal chamber ▪ Surroundings of the secondary clarifiers and aeration basin tanks Structure and piping elevations will also be documented for these features:
▪ Aeration basin tanks
▪ Blower
▪ Influent pump station
▪ Meter vault
▪ Primary Clarifier 2
▪ RAS pump station
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▪ RAS/WAS split station
▪ Valve
The collected data will be combined with previous surveys and record drawings to create a site base map of existing features. Horizontal datum used is the North American Datum of 1983, and vertical datum is the North American Vertical Datum of 1988 (NAVD88); all coordinates and elevations are reported in feet.
Some earlier projects used elevations based on the National Geodetic Vertical Datum of 1929. To align with NAVD88, those elevations will be adjusted by adding 3.321 ft. This conversion factor was determined for the WWTP site using National Oceanic and Atmospheric Administration’s National Geodetic Survey Coordinate Conversion and Transformation Tool.
4.1.4 Demolition
The contractor will transport demolished materials offsite to approved disposal facilities in accordance with applicable local regulations. If any hazardous materials—such as asbestos, lead-based paint, or contaminated soil—are encountered during construction, the contractor must notify the engineer before handling or developing mitigation measures. All mitigation plans must be reviewed by the engineer and coordinated with the Humboldt Waste Management Authority.
Mixed construction and demolition (C&D) waste will be taken to facilities approved by the California Department of Resources Recycling and Recovery or recognized by Humboldt Waste Management Authority.
The City requires compliance with its C&D Debris Diversion ordinance, as detailed in Chapter 15.48 of the Fortuna Municipal Code. This ordinance requires that at least 65% of C&D waste from applicable projects be diverted from landfills through reuse or recycling, unless an exemption is granted because of infeasibility. The contractor must submit a Construction Waste Management Plan for approval and maintain documentation of all waste diversion activities
4.1.5 Grading and Drainage Design Criteria
Overall, the site will be graded to direct stormwater runoff away from buildings and toward designated stormwater management features. Final grading will incorporate rounded and varied fill and cut slopes to avoid abrupt elevation changes, integrate with the natural terrain, and enhance the site’s visual appeal.
The grading design will aim to prevent onsite ponding. Grading and erosion control will comply with City policies and Humboldt County regulations. Low-impact development practices will be used to manage stormwater in an environmentally sustainable manner. Efforts will be made to preserve existing grade elevations as much as possible throughout the grading process.
The Fortuna WWTP in Humboldt County, California, lies within a Federal Emergency Management Agencydesignated 100-year floodplain (Zone AE), indicating a 1% annual chance of flooding and requiring compliance with specific building standards.
4.1.6 Site Layout
The proposed site plan includes several new features, including aeration basins, a PE/RAS mixing box, a chemical storage and pumping facility, an FEB pump station, and yard process piping. These new facilities will be situated north of the existing aeration basins. The FEB pump station will be on the northern side of Equalization Pond 1. Upgrades are also planned for the existing RAS pump station, blower structure, and the RAS/WAS split station, which are south of the existing clarifiers. The existing liner in Equalization Pond 1 will be removed and replaced. The selection of the new liner material will be based on criteria such as constructability, permeability, cost, durability, vehicle access, and long-term performance.
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4.2 Yard Piping
The pipe schedule, Drawing 000-G-0022, identifies the sizes, flow stream, pipe materials, and testing requirements. Major yard piping consists of the following:
▪ Plant influent bypass
▪ Plant influent return
▪ PE
▪ RAS
▪ WAS
▪ Utility water
The following tie-ins to existing utilities will be required:
▪ PE
▪ Utility water
▪ RAS
The following requirements will be applied to piping design and construction:
▪ Piping will be located so that it is not a safety hazard nor a barrier to equipment access. ▪ The minimum depth of cover for buried pipelines will be 30 inches. If this minimum coverage cannot be provided, the pipe will be concrete encased.
▪ The minimum percentage slope on gravity lines will be 1 degree. ▪ Manual vent valves will be provided on the highest point and every local high point of every pipeline to be filled with liquid or to be tested hydrostatically.
▪ Exposed piping will be identified with fluid service and flow direction.
All facilities will be required to be operational during construction. Temporary piping will be needed for the following facilities:
▪ Plant influent overflow/FEB
▪ RAS/WAS piping
4.3 Architecture
The new blower and chemical storage facility includes an open metal canopy roof structure.
4.3.1 Codes, Regulations, and Standards
All new facilities and existing facilities to be rehabilitated will be designed to conform to the following codes, standards, and regulations, as adopted by the City of Fortuna Municipal Code. The 2025 editions of California Codes went into effect on January 1, 2026, and will be used for this Project. ▪ 2025 California Administrative Code (Part 1 of Title 24) ▪ 2025 CBC (Part 2 of Title 24)
▪ 2025 California Electrical Code (Part 3 of Title 24)
▪ 2025 California Mechanical Code (Part 4 of Title 24)
▪ 2025 California Plumbing Code (Part 5 of Title 24)
▪ 2025 California Energy Code (Part 6 of Title 24)
▪ 2025 California Fire Code (Part 8 of Title 24)
▪ 2025 California Existing Building Code (Part 10 of Title 24) ▪ 2025 California Green Building Standards Code (Part 11 of Title 24) Funding Application Technical Report Update
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4.3.2 Energy Code Data
Fortuna, California, is defined as Climate Zone 1 according to California Building Climate Zones and California Energy Code – 140.3 Requirements for Building Envelopes. Note that the current proposed designs are for open-air canopies with no proposed conditioning or insulation. ▪ Roof or Ceiling Insulation – Maximum U-Factor of U-0.034 (R-29.4) ▪ Wall Insulation – Maximum U-Factor of U-0.095 (R-10.5) ▪ Exterior Doors – Maximum U-Factor of U-0.7 (R-1.5)
▪ Exterior Fenestration
- Maximum U-Factor of U-0.36
- Maximum Relative Solar Heat Gain Coefficient – 0.25
- Maximum Window-Wall Ratio – 40%
4.3.3 Accessibility and Universal Design
Accessibility is defined by the CBC, Chapter 11B: Accessibility to Public Building, Public Accommodations, Commercial Buildings, and Public Housing.
In accordance with 11B-203.5 Machinery Spaces: Spaces frequented only by service personnel for maintenance, repair, or occasional monitoring of equipment will not be required to comply with these requirements or to be an accessible route. Machinery spaces include mechanical, electrical, or communications equipment rooms, water, or sewage treatment pump rooms and stations, for example.
4.3.4 Design Concepts
Currently, no new enclosed facilities are proposed. Any scope changes to include new facilities will use and reference the construction of the existing concrete masonry unit facilities onsite to match visual aesthetics and functional performance and specified to comply with current California building and energy codes.
An open canopy structure is proposed for the outdoor blowers and chemical storage. This canopy will be primarily structural in nature. The roofing material will be chosen to be consistent with the existing green standing seam metal roofing onsite (refer to Figure 4-1 for a reference photo of the existing roofing at the digester building). The new canopy will be designed as an open structure only with no future consideration for enclosure (that is, no future tie-in at the wall or roof transitions, and no insulation).
Figure 4-1. Existing Standing Seam Metal Roof (Digester Building) Funding Application Technical Report Update
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Signage:
▪ Safety, informational, and hazardous material signs will be provided as required by code and safety standards.
Interior Systems:
▪ Any proposed modifications to existing interior spaces will consider interior surfaces and finishes for appropriateness to the individual spaces. Consideration will be given to the need for washdown, corrosion resistance, slip resistance, light reflectance, comfort, and maintenance.
4.3.5 Code Summary
▪ Proposed Chemical Storage and Blower Facility (#350)
- Industrial Occupancy (Group “F-1”)
- Type II-B Construction (Noncombustible)
- 25 ft by 20 ft Footprint (500 ft2) – 15,500 ft2 Allowable - Max Height – 55 ft
- Exit Access Travel Distance – Max 200 ft
4.3.6 Chemical Material Storage
The proposed chemical storage is an outdoor storage facility adjacent to a structural canopy for weather protection of the associated equipment. Approximately 5,000 gallons of magnesium hydroxide slurry will be stored in the outdoor containment area. The magnesium hydroxide slurry does not meet any criteria for hazardous material as defined by California Building and Fire Codes(refer to Table 4-1). Although it does not meet the criteria for an outdoor control area of hazardous materials, the chemical storage area will consider the code requirements for hazardous control to the extents feasible.
Table 4-1. Hazardous Material Requirements (Outdoor Storage Control Area) Type
Hazard – #,#,#,# (Per NFPA 704)
(Health, Flammability, Instability,
Special) Storage Amount
Magnesium Hydroxide Slurry (60%) HAZARD - 0, 0, 0, 0 5,000 gallons in total Outdoor Control Areas
The outdoor control areas will be kept free from weeds, debris, and common combustible materials not necessary to the storage. The area surrounding an outdoor control area will be kept clear of such materials for not less than 15 ft. (T24-9-5003.12)
NFPA = National Fire Protection Association
4.4 Geotechnical
The geotechnical design criteria were estimated based on data collected from three cone penetrometer test soundings performed by SHN Consulting Engineers and Geologists for the current improvements. The 2025 geotechnical data report is included in Appendix C of this BODR. Data from soil borings and laboratory testing performed for previous improvements to the WWTP were also evaluated.
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4.4.1 Soil Profile
The generalized soil profile consists of clay and silty clay soil from the ground surface down to a depth of 28 to 33 ft. The clay generally has an estimated undrained shear strength of 800 to 1,000 pounds per square foot (psf) based on the cone resistance. Sand lenses or gravel are present in some areas within the upper clay soil. The clay soil is underlain by dense sand and dense silty sand soil to a depth of at least 50 feet below the ground surface.
4.4.2 Seismic Site Class
The soil site classification for seismic design was estimated using the average shear wave velocity that was measured in the cone penetrometer test (CPT) sounding CPT-25-3. Test sounding CPT-25-3 met refusal at a depth of 38 ft beneath the existing ground surface, and the shear wave velocity at greater depth was assumed to be equal to 1,400 ft per second within the hard formation down to a depth of 100 ft. This appears to be conservative because the cone resistance was greater than the CPT-25-3 in the sand between 38 ft to 50 ft below ground surface in CPT-25-01. The average shear wave velocity for the upper 100 ft was 1,005 ft per second, calculated in accordance with American Society of Civil Engineers (ASCE) 7-22. The average shear wave velocity corresponds to Site Class CD.
4.4.3 Groundwater
Groundwater was encountered between 6 to 8 ft below ground surface during explorations based on pore pressure dissipation tests within the CPT soundings. Dewatering will be required during construction of the proposed aeration basins and pump station. The dewatering wells should be screened at least from 10 to 30 ft below ground surface to capture water in the silt and sand lenses within the clay in addition to the underlying dense sand. Artesian conditions were not observed from the pore pressure dissipation test data.
4.4.4 Bearing Capacity
The proposed aeration basins will be embedded at least 20 ft below ground surface. Excavated soil will weigh more than the structure filled with water, and post-construction settlement is anticipated to be negligible. The aeration basin foundation can be designed using an allowable gross bearing pressure of 3,500 psf for static vertical loading. The bearing pressure is limited due to potential settlement. The allowable gross bearing pressure for temporary load conditions, such as seismic loads, is 5,000 pounds per square foot.
Shallow foundations for miscellaneous structures underlain by native soil may be designed using an allowable gross bearing pressure of 1,250 psf for dead plus live loads. For seismic loading, an allowable gross bearing pressure of 2,000 psf can be used. For shallow foundations underlain by more than 8 feet of structural fill material, the allowable gross bearing pressure is 3,000 psf for dead plus live loads. For seismic loading, an allowable gross bearing pressure of 4,000 psf can be used.
For design of flexible concrete slabs, a coefficient of subgrade reaction of 75 pounds per cubic inch can be used for a 1 ft by 1 ft square load (ks1). For a mat foundation acted upon by loads spaced B feet, the applicable coefficient of subgrade reaction, ks, should be determined by the following equation:
𝑘𝑠 = 𝑘𝑠1 (
𝐵 +1
2𝐵
)
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4.4.5 Lateral Earth Pressures
The native clay soil should not be used as backfill around buried structures, as the lateral pressure could be excessive because of expansive clay pressure as the soil becomes wet. Imported structural fill materials should be used as backfill around buried structures. The structural fill should be mostly sand and gravel, and have between 5 to 20% material passing the No. 200 sieve. The plasticity index of the fines should be no greater than 12.
The lateral earth pressures for buried structures should be calculated using the pressure from an equivalent fluid with the recommended density listed in Table 4-2 for active, at-rest, and passive wall loading.
Table 4-2. Lateral Earth Pressure Criteria for Buried Structures Case
Earth Pressure
Coefficient for
Native Soil
Equivalent Fluid
Density for Saturated
Native Soila
(pcf)
Earth Pressure
Coefficient for
Structural Fill
Equivalent Fluid
Density for Saturated
Structural Filla
(pcf)
Active 0.32 84 0.27 81
At-rest 0.52 96 0.46 94
Passive 3.0 265 3.5 335
a Undrained, or saturated, equivalent density values include the pressure of water in addition to the soil. pcf = pound(s) per cubic foot
The recommended lateral pressures for native soil assume an effective internal friction angle of 29 degrees and a saturated unit weight of 127 pcf. The recommended lateral pressures for structural fill assume an effective internal friction angle of 33 degrees and a saturated unit weight of 130 pcf. The soil should be assumed to be saturated up to the ground surface. Active conditions assume that the wall is free to rotate. At-rest conditions apply to restrained structural walls. Lateral load passive resistance applies to soil resisting horizontal loads. The passive resistance requires significant movement to develop the full resistance, and the passive values listed in Table 4-2 are reduced from their maximum values at large strainlimit displacement. A sliding coefficient of 0.35 times the normal load on the foundation is recommended for frictional resistance of the structure foundations sliding against the native soil.
Dynamic soil forces from the 2,475-year design earthquake event were estimated in accordance with Mononobe-Okabe methods. For lateral earth pressures during an earthquake, a dynamic lateral nominal force equal to 21H2should be added to the static lateral active earth force for walls that are backfilled with structural fill, where H equals the height of the wall, in feet, from the base of footing to the top of the retained soil; and the force is in pounds. The dynamic lateral force should be applied at a height of one-third of the wall height above the base of the wall footing. Additional dynamic forces from water within the soil is unnecessary in accordance with the conservatism included in the Mononobe-Okabe theory and case history performance of retaining walls during earthquakes.
For buried structures, the dynamic soil forces from the design earthquake event can alternatively be represented as an additional uniform pressure of 17H, where H equals the height of the wall in feet, from the base of footing to the top of the retained soil, and the pressure is in pounds per square foot. The lower dynamic force from either the Mononobe-Okabe or alternative force from uniform pressure methods can be used for seismic design load cases.
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4.4.6 Construction Considerations
Dewatering should be completed prior to the start of excavation to reduce subgrade moisture content and improve subgrade stiffness. There is a risk of settlement of structures surrounding the excavation caused by dewatering if there are organic soils or peat layers beneath the structures. A trace of peat in silt was noted in a soil boring near the proposed aeration basins, around 25 feet below the existing ground surface. Settlement monitoring of existing structures should be performed during dewatering operations.
The proposed aeration basins are underlain by approximately 10 feet of compressible silty clay with some organics. This soil is anticipated to be very soft even after dewatering, and will be difficult to dry out in the coastal climate. Even if the near-surface subgrade soil is dried to near the optimum moisture content, the underlying soft silt and organics will likely cause the prepared subgrade to yield and pump under the compaction effort. Also, the estimated settlement of the aeration basin structure is greater than 2 inches with a potential differential settlement of approximately ¾ inches. The upper 2.5 feet of native soil beneath the aeration basin should be overexcavated and replaced with foundation stabilization rock wrapped in woven geotextile. The thick mat of rock will function to stabilize the soft subgrade and also reduce the differential settlement to less than 0.25 inches. The estimated total settlement of the basins after construction is approximately 1.75 inches.
The proposed shallow structures should be underlain by 6 inches of aggregate base rock to provide a stable working surface for construction. The subgrade beneath the aggregate base rock should be proof rolled with heavy construction equipment to check for soft, pumping or yielding areas prior to placement of the aggregate base rock.
4.5 Structural
4.5.1 Structural Criteria
The structural criteria have been developed to provide a common basis for all structural designs in line with accepted structural practice and standards for improvements to the Fortuna WWTP structures.
4.5.1.1 Applicable Codes and Standards
The following summarizes the specific codes and industry standards that will be used as basis of design so that the strength and quality of the materials and design procedures meet the required standards. ▪ 2025 CBC
▪ 2025 California Existing Building Code
▪ American Society of Civil Engineers, Minimum Design Loads and Associated Criteria for Buildings and Other Structures 2022 (ASCE 7-22)
▪ American Concrete Institute (ACI), Specifications for Concrete Construction (ACI 301-20) ▪ American Concrete Institute, Building Code Requirements for Structural Concrete 2019 (ACI 318-19) ▪ American Concrete Institute, Code Requirements for Environmental Engineering Concrete Structures (ACI 350-20)
▪ American Concrete Institute, Code Requirements for Seismic Analysis and Design of Liquid-Containing Concrete Structures (ACI 350.3-20)
▪ American Institute of Steel Construction, Specifications for Structural Steel Buildings 2022 (AISC 360-22)
▪ Aluminum Association, Aluminum Design Manual 2020
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▪ American Welding Society, Structural Welding Code – Steel 2020 (AWS D1.1) ▪ American Welding Society, Structural Welding Code – Aluminum 2020 (AWS D1.2)
4.5.1.2 Existing Structural Documents
▪ Water Pollution Control Facilities, City of Fortuna, As-Built Structural Drawings, Winzler & Kelly Consulting Engineers, March 1974.
4.5.2 Loads
4.5.2.1 Dead Loads
Dead loads consist of structural self-weight of all new structures as well as the weight of any additional equipment being added to the facilities. In addition, 5-pound-per-square-foot (psf) load will be added as collateral load.
4.5.2.2 Live Loads
The live loads are shown in Table 4-3.
Table 4-3. Design Criteria for Live Loads at the Aeration Basin Platform Parameter Value Unit(s)
Walkway 60 psf
Stairway and exits 100 psf
Mechanical equipment 200 psf
Roof live load 20 psf
Railing 50 plf or 200 lb concentrated -
lb = pound(s)
plf = pound(s) per linear foot
4.5.2.3 Snow Loads
The design criteria for snow loads are shown in Table 4-4.
Table 4-4. Design Criteria for Snow Loads
Parameter Value Unit(s)
Ground Snow Load 14, per ASCE-7 Hazard tool psf
Winter Wind Parameter, W2 0.35 -
Surface Roughness Category B -
Exposure of Roof Fully exposed -
Exposure Factor, Ce 0.9 -
Thermal Factor, Ct 1.2 -
Slope Factor, Cs Per CBC -
Unbalanced snow loads as required by ASCE-7
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4.5.2.4 Wind Loads
The wind loads are shown in Table 4-5.
Table 4-5. Design Criteria for Wind Loads
Parameter Value Unit(s)
Basic wind speed, V 103, per ASCE-7 Hazard tool mph
Risk Category IV -
Exposure Category C -
Topographic Factor, Kzt 1.0 -
Ground Elevation Factor, Ke 1.0 -
Velocity Pressure Exposure Coefficient, Kz Per CBC -
mph = mile(s) per hour
4.5.2.5 Seismic Loads
The seismic design parameters shown in Table 4-6 are in accordance with ASCE 7-22 and based on the ASCE online Hazard tool.
Table 4-6. Design Criteria for Seismic Load
Parameter Value Unit(s)
Mapped Spectral Response Acceleration
Short Period, SS 3.02 -
1 Second Period, S1 1.15 -
Design Spectral Response Acceleration
Short Period, SDS 2.14 -
1 Second Period, SD1 1.26 -
Site Soil Class CD -
Risk Category IV -
Importance Factor 1.5 -
Seismic Design Category, SDC F -
4.5.2.6 Hydrodynamic Loads
The hydrodynamic forces will be developed in accordance with ACI 350.3-20 as modified by ASCE 7-22.
4.5.2.7 Lateral Earth Pressure and Buoyancy
Lateral earth pressures will be developed in accordance with Section 4.4.5 of this report for walls of any proposed new basin. An additional surcharge of 2 ft of soil weight will be added to this load. For details of lateral earth pressure and soil-bearing capacity, refer to Section 4.4 of this report.
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Buoyancy loads will be considered for all structures on the site that are subjected to uplift. Safety design factors for uplift resistance for normal high ground water elevation and 100-year flood elevation are 1.25 and 1.10, respectively.
4.5.3 Construction Materials
Table 4-7 summarizes the major materials that will be used to construct the proposed aeration basin and related facilities.
Table 4-7. Construction Materials for Proposed Facilities Material Parameter Property
Cast-in-Place Concrete:
Minimum Compressive Strength 5,000 psi at 28 days, Normal weight Cement Type Per Specification
Maximum Water to Cement Ratio 0.40
Reinforcing Steel ASTM A615 Gr. 60
Weldable Reinforcing Steel ASTM A706 Gr. 60
Structural Steel:
W-Shapes, T-Shapes, Channels ASTM A992
M-shapes, S-shapes, Angles, Plates, Bars ASTM A572 Gr. 50 Rectangular HSS ASTM A500 Gr. C (Fy = 50 ksi)
Round HSS ASTM A500 Gr. C (Fy = 46 ksi)
Pipes ASTM A 500 Gr. B (Fy = 35 ksi)
Stainless Steel:
Plates ASTM A240 Type 316
Bars and Shapes ASTM A276 Type 316
Aluminum
Aluminum Structural Shapes ASTM B308 6061-T6
Aluminum Plates ASTM B209 6061-T6
Aluminum Grating and Railing ASTM B221 Alloy 6061-T6
Aluminum Welding Electrodes 4043
Bolts and Rods
High-Strength Steel Bolts ASTM F3125 A325
Common Bolts A307
Nuts ASTM A563
Anchor Rods F15554 Gr. 36, 50 or 105
Stainless Steel Bolts ASTM F593 Type 316
Adhesive Anchors Stainless Steel ASTM F593 Type 316
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FY = yield strength
HSS = hollow structural sections
ksi = kilopound per square inch
4.5.4 Structural Systems
4.5.4.1 Proposed Structural Facilities
4.5.4.1.1 Aeration Basin
New aeration basins are proposed, consisting of two 166-foot by 22.25-foot tanks. Each basin will have approximately 24.5 ft high concrete walls resting on a concrete foundation slab. The new aeration basins will be constructed north of the existing aeration basins. Finite element models of the new basin tank have been developed for analysis and design. Preliminary analysis indicates that the tank walls will be 36 inches thick.
4.5.4.1.2 Flow Equalization Pump Station
The new flow equalization pump station consists of a 19-foot by 17-foot buried concrete facility.
The pump station walls are estimated to be 18 inches thick and will be supported by a 20-inch concrete slab. The pump station roof consists of a 12-inch-thick concrete slab.
4.5.4.1.3 Chemical Facility
A new chemical facility is proposed that will consist of a concrete slab with an integrated perimeter concrete curb. The chemical facility will be to the north of the proposed aeration basin and will measure 25 ft by 17 ft in plan. The chemical facility slab will be structurally integrated with the adjacent blower facility.
4.5.4.1.4 Blowers Facility
A new blowers facility is proposed adjacent to the chemical facility that will consist of a metal building system canopy resting on concrete slab. The blowers facility will measure 40 ft by 17 ft in plan and will be integrated with adjacent chemical facility. The main lateral load-resisting systems for the blowers facility will be ordinary moment frames. .
4.5.4.1.5 Mixed Liquor Distribution Box
A new mixed liquor box is proposed, featuring a four-chamber configuration with14 ft by 10 ft footprint.
The structure will consist of 14-inch-thick reinforced concrete walls supported by an 18-inch-thick foundation slab. The partially buried structure includes an aluminum ladder for access to top of facility.
4.5.4.2 Special Inspections and Structural Observation
Special inspections will be required in accordance with Chapter 17 or the 2025 CBC. The design professional in responsible charge will prepare a statement of special inspection in accordance with section 1704 of the code. The statement will identify the requirements of special inspection, including the type and extent of work. In addition, Chapter 17 of the 2025 CBC requires a registered design professional to perform structural observations for structures classified as Risk Category IV.
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4.6 Process Mechanical
4.6.1 Codes, Regulations, and Standards
The mechanical design will use applicable industry standards and design guidance for piping, valves, and process equipment. The following is a list of the more significant resources that will be followed for the design and specification standards:
▪ American Water Works Association
▪ American Society of Mechanical Engineers (ASME)
▪ American National Standards Institute (ANSI)
▪ Hydraulic Institute
▪ NFPA
4.6.2 Process Equipment Layout and Access
The following will be implemented to make the Fortuna WWTP functional, operable, and maintainable.
When developing process equipment layouts, the following minimum requirements will apply:
4.6.2.1 Equipment
▪ Necessary clearance for equipment removal, replacement, or maintenance will be provided in the layout on the drawings. A minimum 3 ft clearance will be provided on at least three sides of the equipment footprint. Additional space will be provided as required for specific equipment. ▪ Flexible connections will be employed to permit easy assembly and disassembly of connections to equipment.
▪ Equipment and panels will be mounted on equipment pads or elevated with legs or by mounting to walls to protect them from washdown.
▪ Ladders and hatches will be provided to access and remove equipment. ▪ Lifting eyes will be provided above equipment not otherwise provided with lifting means (for example, a hoist or crane).
▪ Washdown and utility stations will be provided as needed at each facility to facilitate cleanup and pipe flushing and will have 50 ft of hose provided.
4.6.2.2 Piping and Valves
▪ Piping will be located such that it is not a tripping hazard, a head-knocker, or a barrier to equipment access.
▪ Minimal piping will be located above blowers, compressors, or pumps to facilitate lifting the equipment.
▪ In general, piping will be configured such that it is close to walls where it can be easily supported, particularly in spaces with high ceilings.
▪ Pipe supports and seismic bracing are generally not shown on the layout drawings; however, it will be verified that adequate space is available for installing these supports. ▪ Flexible connections will be employed to permit easy assembly and disassembly of piping. ▪ Valves will be kept within operator reach (below 6 ft), or a chain operator will be provided for valves greater than 6.9 ft above the operating floor.
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4.6.2.3 Hydraulic Calculations
AFT Fathom hydraulic software package will be used to calculate hydraulics and determine pipe sizing.
AFT Fathom performs steady-state, incompressible, Newtonian or non-Newtonian fluid behavior and energy analysis. Fathom is used to calculate pressure drop and flow distribution in liquid and low-velocity gas piping and ducting systems.
Replica is a suite of models and object libraries developed in ExtendSim for dynamic simulation and for optimizing process systems. A Replica dynamic simulation model will be used to develop a hydraulic profile for the treatment plant. A dynamic simulation can also react to conditions that change with time, such as flow demands or water quality. The impacts of changes to hydraulics, process, and control strategies can be observed in operating performance, energy consumption, and chemical consumption.
4.6.2.4 Pump Selection and Hydraulic Calculations
Hydraulic calculations will be prepared for all pump applications. Selected pump operating points will be centered near the pump best-efficiency point at the design condition. A rating point selected to the right of best-efficiency flow will allow higher efficiency at reduced flow and speed. Caution will be exercised in selecting pump operating points at the extremes of the pump operating curve because of possible excessive pump shaft radial loading, reduced bearing life, and possible shaft failure.
Care will be exercised in providing adequate overlap of pump performance when multiple parallel pump installations are provided. Proper pump sequencing requires that pumps have sufficient performance overlap to allow transition adding or dropping pumps in operation.
4.6.2.5 Piping Systems
Process piping includes yard piping, which may be entirely designed and specified outside of the mechanical discipline. Piping for process services and mechanical utilities in the yard also requires civil engineering coordination and consideration for earth loads and traffic loads. ▪ Design Codes and Standards
- ANSI B31.3 – Process Piping
- MSS SP 58 – Pipe Hangers and Supports
- MSS SP 127 – Bracing for Piping Systems: Seismic, Wind, Dynamic Design, Selection, and Application
4.6.2.6 Pipe Materials and Applications
A preliminary Piping Schedule indicating piping services planned for the Fortuna WWTP is provided in the drawings. The schedule is organized by identifying service symbol (legend) and identifies materials, coatings, linings, and test pressures to be used for these services. Updates will be made as design progresses to become the Piping Schedule included in the construction documents.
4.6.2.7 Pipe Supports
The general minimum requirements set out in the contract requirements apply to the pipe supports, anchorage, and seismic bracing of process piping.
The WWTP is in a seismically active region with Seismic Design Category F. The following design and analysis procedures will be conducted:
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▪ Normal fluid service and Category D fluid service, as identified in ASME B31.3, pipes greater than or equal to 6 inches diameter, will require formal pipe stress and flexibility analysis or by-rule analysis as identified in ASME B31.3 Process Piping.
▪ Category D fluid service, as identified by ASME B31.3, pipes less than 6 inches diameter will require byrule pipe stress and flexibility analysis.
Bentley Autopipe software will be used to perform stress analysis on key process pipelines. This includes the low-pressure air piping systems because of the higher system pressure and thermal expansion.
Autopipe is a software that allows the engineer to analyze and visualize pipe stress with static and load sequencing nonlinear systems and to examine different loading scenarios, including thermal, seismic, wind, and dynamic load cases. The software allows the engineer to check pipe stress displacements and clashes caused by the loading cases mentioned previously. Autopipe complies with industry codes and standards such as ASME B31.3.
4.6.2.8 Seismic Design – Pipe Supports
Sway struts and braces will be provided to restrain piping seismic forces as required by the codes listed in the previous subsections.
4.7 Corrosion
4.7.1 Atmospheric Exposure
Atmospheric exposure includes both outdoor and noncorrosive indoor exposures. The following subsections describe anticipated exposure conditions and design approach recommendations. ▪ Polymer-based materials (that is, plastic, nonmetallic) require an ultraviolet barrier (spray applied coating) or ultraviolet-resistant resin embedded within a resin topcoat. ▪ Iron and steel surfaces will be protected from corrosion in all atmospheric exposure conditions.
Exposed carbon steel, cast iron, and ductile iron in the finished construction, in both indoor and outdoor locations, will be coated with epoxy primers and polyurethane finish coats for durability and gloss retention. Highly corrosive areas with high humidity, corrosive gases, and with frequent washdown will receive two coats of epoxy and a polyurethane finish coat. ▪ Steel decking and pre-engineered metal buildings will be coated with manufacturers’ standard coating options. If manufacturers' standard coating offerings do not meet the intended service conditions, then field finish coats will be specified to provide proper corrosion protection. ▪ High temperature piping or surfaces will be insulated for personnel protection. Where condensation can collect beneath the insulation, coatings suitable for the temperature and under insulation will be provided.
▪ Exposed stainless steel will not be coated unless required for color-coding purposes, or if found in contact with dissimilar metals and isolation cannot be incorporated. Generally, an electrical isolation kit will be specified where dissimilar metals are intact.
▪ Copper materials of construction will not require additional protection unless within a chemical facility or exposed to hydrogen sulfide (H2S).
▪ Fluoropolymer (Kynar)-coated aluminum has been used for architectural components and louvers in outdoor service in similar facilities and will be considered for this Project. Anodized aluminum is already used extensively onsite and has performed well. Therefore, aluminum is appropriate for service in exposed conditions present on this Project and will also be considered.
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▪ Concrete and masonry construction components exposed to the atmosphere will not require supplemental corrosion protection but may be painted or stained for architectural purposes.
4.7.2 Submerged Exposure
Submerged exposure includes immersed metals, concrete, and polymer materials exposed to process flow for extended periods, including inside pipe.
▪ Do not use aluminum in submerged conditions.
▪ Provide protective coatings for all submerged ferrous metals. Ferrous metals will have a minimum of 16 mils dry film thickness of epoxy suitable for immersion service. Submerged coatings will be 100% holiday tested.
▪ Use Type 304 or Type 316 for submerged stainless steel to temperatures not exceeding ambient temperatures unless chlorides exceed 100 or 1,000 parts per million of chlorides, respectively. ▪ Liner materials are not anticipated for submerged concrete surfaces unless the water has a strong negative calcium carbonate precipitation potential or has low pH. The new flow equalization pump station is anticipated to have corrosive conditions and therefore will be lined with a coating.
Submerged dissimilar metal connections will be electrically isolated. If electrical isolation is not possible, the dissimilar metals will be coated to minimize the driving potential between the dissimilar metals.
Cement mortar liner performs well in most conditions at a WWTP unless there are air pockets inside a pipe and H2S can be generated. Raw sewage pipes will be lined with ceramic modified epoxy for pipelines.
4.7.3 Buried Exposure
Buried exposure includes metals, concrete, and polymer materials exposed to the region’s native soils. ▪ Chlorides will affect the performance of stainless steel. A geotechnical investigation was performed to determine whether Type 304 and 316 stainless steel requires additional corrosion protection. The latest soil lab test results indicated that the chloride content on this site was approximately 4 ppm, hence no additional protection for stainless steel is required. ▪ Sulfates will affect concrete performance. A geotechnical investigation was performed to determine whether special considerations for mix design, in accordance with ACI 201.2, are required. The latest soil lab test results indicated that the sulfate content on this site was in the range of 11 to 13 ppm. This level of sulfate has no negative impact on Type II Portland cement. ▪ Previous geotechnical report (SHN Consulting Engineers & Geologists, Inc., 2003) indicated that the soil is corrosive. The current geotechnical report (SHN Consulting Engineers & Geologists, Inc. 2025) indicates the soil is corrosive, based on low as-found resistivities, ranging from 2,342 to 2,390 ohmcentimeters, so cathodic protection will be required for buried ferrous metal piping. ▪ Because cathodic protection is required, isolation flanges will be used to electrically isolate the pipe to protect it from other metallic structures such as rebar, grounding wires, pipe supports, and existing pipes. Pipe penetrations into structures will require electrical isolation from rebar and wire ties. ▪ Bonded joints are required for nonwelded joints for electrical continuity. ▪ Thermite-welded wires for test station wires or bond wires will be protected with a weld cap. ▪ Buried steel pipe will be coated with epoxy, or tape coat with cement mortar over coat. Buried ductile iron will be coated with manufacturers’ standard asphalt coating and V-Bio-enhanced polyethylene encasement (ductile iron).
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▪ Protective coatings and cathodic protection are typically not required for buried Type 316 stainless steel pipe.
▪ Buried dissimilar metal connections will be electrically isolated. Where electrical isolation kits cannot be installed, electrical isolation may be achieved by placing a small spool section of plastic pipe such as polyvinyl chloride (PVC).
▪ Buried copper piping will be tape wrapped with 20 mil thick PVC tape.
4.7.4 Hydrogen Sulfide Exposure
H2S exposure can cause major corrosion on some materials, particularly on concrete surfaces inside enclosed basins in upstream process equipment such as utility holes, influent channels, splitter boxes, and primary clarifiers.
The new flow equalization pump station will receive chemical-resistant coatings on the concrete and metal surfaces inside. If the new flow equalization pump station has a consistent minimum water level, the chemical-resistant coating is only required in the headspace (vapor space) to an elevation of 1 ft below the minimum water level.
4.7.5 Chemical Exposure
Chemical storage and pumping facilities will receive secondary containment coatings to protect the concrete floor. Pump materials, tanks, piping, and other miscellaneous appurtenance will be resistant to the chemicals listed herein.
▪ 60% Magnesium Hydroxide: No coating is required for concrete.
4.7.6 Building Systems and Mechanical Equipment
Construction methods and materials will affect the long-term corrosion resistance of structures and equipment. Factors that should be included in design are summarized as follows:
▪ Shop and field welds to stainless steel will be ground smooth and passivated after fabrication in accordance with ASTM A380.
▪ Welded stainless steel components will be low-carbon grade (Type 304L or 316L). Hangers, supports, and mounting hardware for pipe, conduit, and ductwork should be stainless steel. Exceptions will be allowed for specific chemical storage and feed locations where stainless steel is not chemically compatible.
▪ Prevent metal-to-metal contact between buried ferrous metal piping, and between submerged ferrous metals and reinforcing steel in concrete structures.
▪ Aluminum embedded in or attached directly to concrete should be protected by applying bitumastic or epoxy coatings.
4.7.7 Electrical and Instrumentation and Controls Systems and Materials Electrical and instrument and control components can be susceptible to corrosion in treatment plants, typically in chemical or high humidity areas. The following items are recommended to reduce potential for corrosion of these components:
▪ Use PVC-coated or plastic conduit and boxes in wet or moist areas. Exposed metallic components should be stainless steel or aluminum.
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4.8 Building Services
4.8.1 Codes, Regulations, and Standards
New facilities and existing facilities to be rehabilitated will be designed to conform to the following codes, standards, and regulations, as required by federal, state, and local authorities. ▪ 2022 CBC (California Code of Regulations, Title 24)
▪ 2022 California Mechanical Code
▪ 2022 California Plumbing Code
▪ 2022 California Fire Code
▪ 2022 California Building Energy Efficiency Standards for Residential and Nonresidential Buildings ▪ 2022 California Green Building Standards Code
▪ American Society of Heating, Refrigerating, and Air-Conditioning Engineers - Standard 62.1, Ventilation for Acceptable Indoor Air Quality - Standard 90.1, Energy Standard for Buildings Except Low Rise Residential ▪ ASME
▪ American Society of Plumbing Engineers
▪ Air-Conditioning, Heating, and Refrigeration Institute ▪ Sheet Metal and Air Conditioning Contractors’ Association’s HVAC Duct Construction Standards: Metal and Flexible
▪ 2024 National Electrical Code, NFPA 70
▪ 2020 Standard for Fire Protection in Wastewater Treatment and Collection Facilities, NFPA 820 ▪ Occupational Safety and Health Administration’s General Industry Safety Orders
4.8.2 Facility Design Criteria
▪ Outdoor Design Conditions – Based on 2022 California Energy Commission (CEC-400-2002-010-AP; Appendix JA2; Table 2-3) for Fortuna:
- Summer: 75 degrees Fahrenheit (°F) Dry Blub/61°F Mean Coincident Wet Bulb (0.10% occurrence) - Winter: 35°F Dry Bulb (0.2% occurrence)
Table 4-8 lists additional design condition criteria for indoor spaces.
Table 4-8. Design Conditions for Indoor Spaces
Building Area Occupied
Temperature
Humidity
Control
Summer,
maximum
Winter,
minimum
Operations
Building
Operations
Room (SCADA) Yes 74°F 68°F No
Operations
Building Electrical Room No 85°F 50°F No
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Building Area Occupied
Temperature
Humidity
Control
Summer,
maximum
Winter,
minimum
Operations
Building Staff Restroom No 74°F 68°F No
4.8.3 Building Services Materials
Heating, ventilation, and air-conditioning (HVAC) material for ductwork will be aluminum, where required, to prevent corrosion from water atmospheres. All other ductwork will be G90 galvanized sheet metal.
The materials for plumbing are as follows:
▪ General water piping will be supplied in type K or L copper as required to meet service type needs and the National Sanitary Foundation 61 regulations.
▪ General drainage piping will be supplied with Schedule 40 PVC with drain, waste, and vent fittings.
However, any supplied piping in an HVAC plenum will be supplied with listed and labeled chlorinated PVC to meet 2022 California Plumbing Code plenum requirements.
4.8.4 HVAC System Description
Two independent heat pump systems will be provided: one each for the operations room (SCADA) and the electrical room. The operations room will be served by a 2-ton heat pump. The electrical room will require a 3-ton heat pump. Each unit will be high efficiency and will have an economizer. Final location, mounting and placement, and type will be determined during the next Project phase.
4.8.5 Energy Compliance
The HVAC and plumbing systems will comply with the applicable requirements of the 2022 California Energy Code, including applicable local amendments.
4.9 Fire Protection
No buildings or structures require fire sprinkler systems in accordance with the CBC.
4.10 Instrumentation and Control
This section establishes basic criteria and control philosophy for the instrumentation and control systems to be used in the Project design. The intent is to standardize the new equipment and method of control as much as possible, for O&M consistency.
The detailed design, control, and monitoring of local control stations, motor control centers, and safety interlocks will follow Jacobs’ programming standards.
Instrumentation and control components, and the supporting network will be provided for facility operation and controls. Instruments to be used for plant operation, process control, and monitoring are level, flow, pressure, and analytical devices. Each type of instrument will be specified in the specification section of Instrumentation and Control Components.
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4.10.1 Existing Instrumentation and Controls
The design approach for the facility upgrade will prioritize assessing and verifying existing instrumentation. The scope of work for the system integrator will specify that each instrument will be individually checked for functionality by the system integrator to confirm that it meets operational standards and can be integrated seamlessly into the upgraded system. This comprehensive functionality check will be documented by the system integrator in a detailed functionality report, which will serve as a guide for construction and maintenance teams to resolve any issues before cutover of the system begins.
The existing instrumentation and equipment tagging will be modified to align to the new tagging standard as shown in Appendix C. The new tagging standard will significantly increase the number of available tags, providing a robust framework for future expansion and the integration of additional instrumentation and equipment. This Project will specify that updating the existing field tags is included by the general contractor so that all current instrumentation is accurately retagged with stainless steel tags in accordance with the new tagging standard. For clarity during the retagging transition phase, the existing tags numbers will remain, with only the appropriate area prefix being applied.
4.10.2 New Instrumentation and Controls
The instrumentation will be tagged following the tagging standard in Appendix A. The new tagging standard will significantly increase the number of available tags, providing a robust framework for future expansion and the integration of additional instrumentation and equipment. Instruments will be specified to have stainless steel tags provided by the manufacturers. Programming, integration into the SCADA system and startup is assumed to be performed by the Owner’s Programmer. It is assumed that the SCADA system will be upgraded to a new Ignition system with Allen Bradley PLC’s prior to the construction of this project.
12 Strand fiber optic network will be utilized to connect the new PLC’s in the field back to the SCADA Network rack. The Aeration blower panels will use CAT6 ethernet cables to communicate to the blower scheduler panel. RIO racks will be utilized for the WAS and Filtrate blowers area, and the RAS WAS pumping area to provide control while reducing the footprint and cost.
4.10.2.1 Flow Equalization Basin Pump Station
The FEB pump station pump operation will be automatically adjusted based on the influent flow rate, with the number of active pumps and their speeds modulated to maintain the total target flow rate. The station pumps will be configured in a lead/lag/standby arrangement. The control system will include automatic lead pump rotation to create even wear across all pumps. Each discharge line will be equipped with a pressure switch that detects high-pressure conditions. Additionally, each pump will be monitored for overtemperature and for seal leakage, with alarms generated by the control system. The common discharge header will be fitted with pressure and flow transmitters. Digital and analog signals will be integrated into the control system for trending, alarming, and totalization of flows.
4.10.2.2 Magnesium Hydroxide Storage and Dosing System
The magnesium hydroxide storage tank will be equipped with a top-mounted mixer. This mixer can be locally controlled by a HOA switch and will operate continuously in auto whenever the tank level is above a predefined minimum threshold.
To monitor the tank level, the system will incorporate an ultrasonic level transmitter as the primary measurement device. For redundancy, a high-level switch will also be installed to provide backup level detection. These instruments will feed data to a remote display panel adjacent to the tanker truck fill Funding Application Technical Report Update
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connection. This panel will include a strobe light that activates at the full tank level, providing a clear visual indication to operators when the tank is full.
The dosing pumps will be controlled in a lead/standby configuration. The dosing pumps will be controlled to a flow setpoint.
4.10.2.3 Aeration Basins
Each basin will be equipped with dissolved oxygen measurement, as well as air flow measurement and actuated airflow control valves at each zone. Control for the air valves will be 4-20–milliamp signals.
The control valves will be modulated by the control system to control the airflow to the basin. The airflow control valves will be equipped with position feedback. The pressure setpoint will be modulated using most open valve control. Most open valve control improves blower efficiency by maintaining optimal airflow based on real-time demand. It also reduces energy consumption and wear on equipment by avoiding unnecessary over-aeration. The new instruments at each drop zone will be integrated into the control system. Analytical measurements will be trended, and airflow will be totalized.
The basin mixers can be locally controlled by a HOA switch and will operate continuously in auto.
The MLR recirculation will be measured by a magnetic flow meter. The pump speed will be controlled to a flow setpoint.
The two DO probes on each aeration basin will be wired to a single transmitter for local display. The DO probes will be equipped with an air blast unit to automatically and periodically clean the analyzer probe head.
Instrumentation on the blower discharge header will be provided with remote mount displays for operator ease of use. The flow meters on the MLR recirculation line will have remote mount transmitters, also for operator ease of use.
4.10.2.4 Aeration Blowers
The aeration blowers will be vendor-provided packages, each with a local control panel (LCP) for local operation and monitoring. The vendor will supply a primary blower panel that act as a blower scheduler, handling the number of blowers running and will communicate blower status such as run/stop, faults, and key performance data to the SCADA system.
The control system will send blower discharge header pressure setpoint to the primary blower panel which will communicate to each LCP to achieve the blower pressure output. Redundant pressure transmitters will be provided and wired directly to the blower scheduler PLC to reduce downtime events caused by a transmitter or communication failure. The blower LCPs will provide alarm notifications, such as high pressure or equipment faults, which are relayed to the control system through the primary blower panel for alarm generation.
Blower LCPs
Specifications for the blower LCPs will be provided so that the blower control system follow the standards and guides that will align the programmable logic controller (PLC) hardware, instrumentation, control programming, human-machine interface (HMI) display, and communications to the control system.
4.10.2.5 RAS/WAS Pump Station
The RAS and WAS pumping station will be equipped with magnetic flow meters one each for RAS and WAS discharge. The flow meters will be integrated into the control system for trending and totalization.
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Each pump will be equipped with a VFD and can be locally controlled by a HOA switch. In auto, the pump speeds will modulate to maintain a flow rate setpoint. The control system will receive feedback signals, including pump operational status and VFD pump faults.
4.10.2.6 WAS and Filtrate Storage
An aeration blower will be vendor-provided package, each with a local control panel (LCP) for local operation and monitoring. The blower panel will communicate blower status such as run/stop, faults, and key performance data to the SCADA system. A local RIO rack will be provided to control the valves at the WAS and Filtrate Storage Tank.
The control system will send blower discharge header pressure setpoint to the blower panel to achieve the blower pressure output. The flow control valves will be modulated to set the flow rate based on the level in the tanks. Ultra sonic level transmitters will be specified to read the tank levels at each of the tanks.
4.11 Electrical
4.11.1 Codes, Regulations, and Standards
▪ 2023 National Electrical Code (NEC)
▪ 2024 Life Safety Code (NFPA 101 HB85)
▪ International Fire Code
▪ 2023 National Electrical Safety Code (ANSI C2 2007)
▪ 2024 Standard for Fire Protection in Wastewater Treatment and Collection Facilities (NFPA 820) ▪ ANSI
▪ National Electrical Manufacturers Association (NEMA)
▪ Institute of Electrical and Electronic Engineers
▪ Instrument Society of America (ISA)
▪ Insulated Cable Engineers Association (ICEA)
▪ Occupational Safety and Health Administration
▪ ASTM
▪ Underwriters Laboratory (UL)
▪ Illuminating Engineering Society (IES)
▪ National Fire Protection Association (NFPA)
4.11.2 Distribution System
The WWTP receives its primary electrical power from Pacific Gas and Electric. This utility connection serves as the main source of power for the facility’s operations. The electrical service entrance for the WWTP is designed as an outdoor main switchgear. From the main switchgear, electrical power is distributed to seven existing motor control centers (MCCs) throughout the facility. These MCCs serve as the primary hubs for distributing electrical power to various process equipment and systems throughout the plant.
The MCCs are responsible for controlling and protecting motors, pumps, and other electrical loads essential to the treatment process.
As part of this expansion, the existing MCCs, switchboard, and switchgear will be assessed for spare capacity to determine their ability to support additional electrical loads. This evaluation will also provide a better understanding of existing equipment that is currently operational and in use.
To accommodate new process areas, provide reliable power distribution, and reduce the amount of trenching between facilities, the power distribution system is proposed as follows:
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1. One new MCC will be installed to power the FEB pump station. The new MCC will be near the new pump station. This MCC will be fed from an existing MCC in the admin building.
2. Two new MCCs will be installed to power the aeration basins, chemical storage equipment, blowers, and auxiliary equipment. These MCCs will be fed from the existing MCCs in the operations building, and the loads will be evenly distributed between each new MCC to balance total loading added to the existing system. These MCCs will be near the new aeration blowers.
3. RAS and WAS equipment will be powered from the existing MCCs in the operations building.
These additions will enhance the plant’s operational flexibility and provide adequate electrical capacity for both current and future treatment demands.
4.11.3 Standby Power Distribution System
The WWTP has a co-generation system and an emergency standby generator. These systems will not be altered as part of this Project.
4.11.4 Design Criteria
4.11.4.1 Listed and Labeled Equipment
Electrical equipment, materials, or services to be provided will have an attached label, symbol, or other identifying mark of an organization concerned with product evaluation, compliance with appropriate standards, and equipment performance. Typically, this is the UL label or listing. In situations where a UL label or listing cannot be provided for equipment because of a lack of UL standards, then testing will be performed by an organization that is acceptable to the authority having jurisdiction.
4.11.4.2 Distribution Voltage Selection
Standard distribution systems to be used are as follows:
▪ 480Y/277 volts solidly grounded wye, 3-phase, 4-wire
▪ 208Y/120 volts solidly grounded, 3-phase, 4-wire
4.11.4.3 Utilization Voltages
The equipment utilization voltages listed in Table 4-9 will be used.
Table 4-9. Equipment Utilization Voltages
Equipment Type Value
Lighting 120 volts, single-phase
Convenience Outlets 120 volts, single-phase
Motor Control 120 volts, single-phase
Motors, less than 1/2 hp 115 volts, single-phase
Motors, 1/2 hp and larger 460 volts, three-phase
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4.11.4.4 Voltage Drop
To address voltage drops, the following steps will be taken:
▪ Prepare steady-state voltage drop calculations for all heavily loaded or long branch circuits and feeders.
▪ Use base calculations for motor circuits on the basis of an 80% power factor and loading consistent with the maximum expected peak load (will not include standby motors). ▪ Do not exceed the following total voltage drop from the transformer secondary to the point of utilization, including feeder, branch circuit, and transformation:
- Lighting – 3%
- Motors – 4%
- Receptacles – 4%
- Electric Heaters – 4%
4.11.4.5 Demand Factors
The demand factors listed in Table 4-10 will be used for sizing power switchboards, MCCs, panelboards, and transformers. Connected load will be used for circuit and equipment sizing in accordance with NEC requirements.
Table 4-10. Demand Factors
Service Demand Factor
Lighting 1.0 x Connected Load
Emergency Lighting 1.0 x Connected Load
Air-conditioning Equipment 1.0 x Connected Load
Ventilation Equipment 1.0 x Connected Load
Drainage Pumps and Ejectors 0.50 x Connected Load
Convenience Receptacles 180 VA each*
Process Loads 1 x Full Load Amps of non-standby loads plus 25% of largest motor *Apply NEC demand factor of 50% for totals over 10 kilowatts VA = volt-amperes
4.11.4.6 Branch Circuits
The following criteria are applicable for branch circuits:
▪ Connected load and NEC requirements will be used for sizing branch circuit breakers and conductors. ▪ A minimum wire size of No. 12 American wire gauge (AWG) copper will be used for lighting and receptacle branch circuits. No. 10 AWG will be used when voltage drop requires a larger conductor on lighting circuits, and when receptacle circuits are longer than 75 ft. ▪ In general, lighting branch circuit loads will be limited to 1,500 watts. ▪ Lighting and receptacle branch circuits will not be combined. ▪ The number of convenience receptacles on any one branch circuit will be limited to five duplex in process areas and six duplex in office areas.
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4.11.4.7 Panelboards
The following is applicable for panelboards:
▪ Branch circuits or feeders on the drawings will identify the panelboard and device protecting the individual circuit or feeder.
▪ Each panelboard will be equipped with a minimum of 20% spare breakers with spaces, bus work, and terminations to complete the standard size panelboard.
▪ Panelboard schedules will be prepared indicating the following:
- Circuit identification
- Protective device trip rating
- Number of poles
- Load in volt-amps by phase
- Rating of main lugs or main circuit breaker
- Neutral bus size
- Ground bus size
- Integrated short-circuit rating of the panelboard
4.11.4.8 Motor Control
Elementary (ladder type) control diagrams will be prepared for each motor showing control wiring, pilot devices, auxiliary contacts, and external connections. A single diagram will be used for more than one motor having the same control.
Graphic symbols shown on the electrical legend sheet will be used. Each component will be identified with a unique letter or name. Wiring and devices inside the controller will be shown as solid lines, and wiring and devices remote from the controller will be shown with a dashed line. Remote devices will be indicated by symbol or description.
4.11.4.9 Equipment Identification
Instrumentation and control piping and instrumentation diagram tag numbers will be used for motors, instrumentation and control devices, and other process equipment shown on electrical drawings. This same numbering method will be used to create unique tags for major electrical distribution equipment.
4.11.4.10 Distribution System Equipment
Distribution equipment criteria include the following:
1. Excluding package systems with integral starters, motor starters will be installed in the 480-volt MCCs.
This includes combination across-the-line motor starters, reduced-voltage soft-starts, and VFDs. If supplied, motor circuit protectors will be rated for the available fault current. Starters larger than NEMA size 3 (50 hp) will be the reduced-voltage soft-start type.
2. MCCs will be hardwired to the PLC for software control.
3. MCCs will be sized to accept future loads and either allow for space in the structures or floor space for future sections.
4. 480-volt and 208Y/120-volt power distribution and lighting panelboards with molded case, bolt-inplace and plug-in, respectively, circuit breakers with integrated short-circuit rating suitable for the available fault current.
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4.11.4.11 Raceway Systems
Separate duct banks and maintenance hole networks will be used for the following systems:
1. 480-volt power wiring and 120-volt control wiring
Special consideration will be given to separating raceways involving low-level process control signal wiring and power system wiring to minimize the possibility of interference.
General guidelines for raceway sizing, selection, and installation are given as follows:
1. Conduit sizing will be based on thermoplastic heat and water-resistant (THW) insulation.
2. The following minimum sizes will be used:
a. 3/4-inch minimum diameter for conduit installed exposed on walls and ceilings b. 3/4-inch minimum diameter for conduit concealed in frame construction and finished ceilings c. 1-inch minimum diameter for conduit embedded in masonry, encased in concrete, and underground
3. Raceways will be exposed in process areas.
4. Raceways will be concealed in walls and ceilings in control rooms, offices, and areas that have finished interiors.
5. PVC-coated rigid galvanized steel conduit will be used for the transition from underground direct burial and under slab PVC conduit and concrete-encased (in floor slab) PVC and rigid galvanized steel conduit to exposed rigid galvanized steel conduit. The transition section will extend from 1 ft below grade or top-of-floor slab or the last foot of conduit in the floor slab, to 6 inches out of the floor slab, concrete encasement, or abovegrade.
6. The number of conduit bends will be limited to an equivalent of 270 degrees on long runs without pull boxes.
7. PVC-coated rigid galvanized steel conduit and fittings that are resistant to direct sunlight and include an interior urethane coating will be used in exposed corrosive interior and exterior areas.
8. PVC-coated rigid galvanized steel conduit will be used for underground, direct burial, low-voltage status/control (less than 100 volts) and analog signal circuits.
9. PVC Schedule 40 conduit and fittings will be used for underground direct burial, under slab, and concrete-encased 120-volt circuits.
10. PVC Schedule 40 conduit and fittings will be used for underground concrete-encased 480V power circuits.
11. Rigid galvanized steel conduit and fittings will be used when exposed or concealed in interior, noncorrosive process and nonprocess areas; and in noncorrosive areas outdoors.
12. Flexible, nonmetallic, liquid-tight conduit 4-inch or smaller in size will be used for connections to motors, transformers, and the like, as required. Fittings will be PVC-coated in wet or corrosive areas.
13. Underground conduit routes will be identified with nonmetallic warning tape above underground direct-burial conduits.
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14. Spare raceways will be tagged with a nonferrous metal tag attached to the raceway with a nylon strap.
Raceway tags with approved tag number provided by the contractor will identify the raceway origin and destination and will be located at each terminus, near the midpoint, and at minimum intervals of every 50 ft on exposed raceways (in ceiling spaces and surface-mounted).
4.11.4.12 Wire and Cable
Stranded-copper conductors will be used for all except lighting and receptacle wiring. Solid conductors No. 10 AWG and smaller will be used for lighting and receptacle wiring.
Minimum conductor size of No. 12 AWG will be used for power and lighting branch circuits. Type THHN/THWN-2 insulation will be used for No. 10 AWG and smaller conductors (conduit will be sized for Type THW conductors). Type XHHW-2 insulation will be used for No. 8 AWG and larger conductors (conduit will be sized for THW conductors). For sizing conductors No. 1 AWG and smaller, 60°C conductor ampacity ratings will be used. For sizing conductors larger than No. 1 AWG, 75°C ratings will be used.
Minimum conductor size of No. 14 AWG will be used for individual 120-volt control circuits.
Minimum conductor size of No. 12 AWG will be used for 120-volt control circuits routed in a common conduit with the power conductors to the motor circuit controls. Combining individual motor power and control conductors in a common conduit will be done up to a maximum power conductor size of No. 2 AWG.
Power and control conductors will be color-coded. Conductors No. 8 AWG and smaller will have colored insulation. Conductors No. 6 AWG and larger will be color-coded with tape at each end and at accessible intermediate points.
Conductors and control cables will be tagged with a permanent sleeve or nylon marker plate attached with a nylon strap. Conductor tags with approved tag number will be provided by the contractor and will be located at each termination and in accessible locations.
Under normal conditions, the maximum wire size will be limited to 500 kilo circular mils. Parallel conductors will be used for circuits requiring greater capacity.
Additionally, 120-volt control circuits will be combined in control cables containing multiple No. 14 AWG stranded-copper conductors with type THHN insulation and a common PVC outer jacket.
Further, 600-volt multi-circuit control cable will be used where grouping control circuits is practical, and the number of individual wires exceeds six conductors. When selecting control cable size, 25% spare (plus or minus 10%) conductors will be used.
Multi-conductor control cable color coding will be ICEA S-61 402 Appendix K, Method 1, Table K-2.
Low-voltage status/control (less than 100 volts) and analog signal circuits will be routed in 600-volt, single-twisted, shielded-pair instrumentation control cables. The cables will consist of No. 16 AWG stranded-copper conductors with combination PVC/nylon insulation, drain wire, shield, and PVC outer jacket. Signal circuits will be combined in multi-twisted shielded-pair instrumentation control cables with common overall shield. The cables will consist of No. 18 AWG stranded-copper conductors, with a combination PVC/nylon insulation, pair and common drain wires, pair and common shields, and PVC outer jacket. Instrumentation control cables will be in accordance with ICEA S-82 552. Low-voltage status/control and analog signal circuits will not be routed in the same control cable or conduit with 120-volt control or power circuits. Low-voltage status/control and analog signal circuits will be routed in the same conduit, but not in the same control cable.
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Adjustable frequency drive rated cables will be used between adjustable frequency drives and the driven motor.
4.11.4.13 Circuit Identification
The following steps will be used to identify circuits:
▪ Assign circuit name based on device or equipment at load end of circuit. ▪ Identify circuit at each termination and in accessible maintenance holes and pull boxes. ▪ Use plastic sleeves for conductor No. 3 AWG or smaller and plastic marker plates for larger conductors. ▪ For lighting circuits, identify the panel and circuit number for each fixture.
4.11.4.14 Enclosures
The following summarizes the NEMA categorization for equipment locations:
▪ NEMA 1 enclosures will be used for equipment in electrical rooms and finished areas. ▪ NEMA 12 enclosures will be used for electrical equipment in dry industrial locations. ▪ NEMA 4 enclosures will be used for outside and in wet locations. ▪ NEMA 4X enclosures will be used for corrosive locations.
4.11.4.15 Fiber Optics Cabling
Fiber optic cabling will be installed either in conduit (4-inch-diameter minimum) or in cable trays where applicable. Routing of the raceway system will provide for large radius turns to prevent the fiber optic cable from braking.
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5. Supervisory Control and Data Acquisition System
Section 5 provides details on the SCADA system at the WWTP.
5.1 Control System
The existing control system at the Fortuna WWTP consists of a mix of obsolete Modicon Quantum and Allen-Bradley PLCs with an aging AVEVAHMI. The single HMI workstation is in the operation building.
Modernizing the architecture and wholesale replacement of the plant PLCs and HMI hardware will act as a basis for this design effort. The offsite collection and clean water distribution systems use Tesco PLCs to connect to the existing HMI through a radio network and will be reconnected to the new HMI.
The plant’s standalone HMI workstation is out of warranty and running an operating system and AVEVA InTouch HMI application that is several versions old. Permanent loss of data could occur if the HMI workstation hard drive files or the operating system, software platforms, or programs are corrupted. This workstation is a single point of failure that puts City operations staff at risk of losing visibility of the clean water distribution and wastewater collections systems. It is imperative that a new SCADA system with both hardware and software redundancy be stood up as soon as possible to avoid possible service disruptions and emergency material and labor costs.
The communication infrastructure within the WWTP currently uses a copper-based Modbus Plus serial network that is daisy chained between structures. To develop a more robust and resilient communication system for SCADA components, the media will be replaced with a 24-strand fiber in a physical and topological ring configuration. This will help establish communication resilience within the plant. The control system fiber network will be extended to any new facilities associated with the process improvements. This new fiber network will provide a communication pathway through the plant, of which future projects may use some percentage of the spare fibers. However, this SCADA network is to be strictly segregated from other networked non-SCADA equipment or systems.
The following network-based systems will be connected on the SCADA network:
▪ Antivirus and backup systems
▪ Domain control
▪ Engineering workstations
▪ Historian
▪ Operator workstations (HMI)
▪ PLCs
▪ Any industrial control information system to support one of these functions The following network-based systems will not be directly connected on a SCADA network:
▪ Fire alarm
▪ HVAC
▪ Informational technology platforms
▪ Security cameras
▪ Security systems
5.2 SCADA System Platform Evaluation
The existing PLC hardware is a mix of Schneider Electric and Rockwell Automation hardware. All of the hardware has been discontinued, and the logic contained in the PLCs has years of quick fixes and missing documentation. The current HMI graphics do not follow the industry’s best practices for conveying relevant information to operations and should be updated to follow ISA 18.2 and 101 guidelines.
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Additionally, it will take more time and effort to reuse the old logic and graphics than to write new code using templates that provide efficient coding for both the PLC and HMI. Because the existing SCADA hardware and software is obsolete, no option to replace or upgrade anything in-kind will be presented.
5.2.1 PLC Hardware
The PLC alternatives will be evaluated using the following criteria:
▪ Configuration ease, flexibility, and standardization
▪ Corporate history and stability
▪ Ease of installation and maintenance
▪ Hardware costs
▪ Reliability
▪ Scalability
▪ Security
▪ Technical support and training
5.2.2 HMI Software
The HMI alternatives will be evaluated using the following criteria:
▪ Corporate history and stability
▪ Operator interface
▪ Platform costs
▪ Support from integrators
▪ System scalability
▪ Technical support and training
5.3 SCADA Design Standards
After meeting onsite with plant staff and much internal conversation about the state of the plant control system, the physical space restrictions, and the limited technical support available, it was concluded that the following are the core needs and design principles for the site control system upgrade:
▪ Robust hardware with a small-form factor
▪ Simple configuration and easy replacement
▪ Equipment to be housed inside where possible because of inclement weather Although the SCADA System Upgrade technical memorandum (Jacobs 2024) outlines a very robust control system that would provide a highly resilient control system that would deliver stable operations into the future, there are three primary concerns that led to the decision to implement a simpler design approach:
▪ Limited indoor space for control panel installation
▪ Limited technical resources
▪ Cost of installation and maintenance
Although the components used in the control panel are rated for high humidity, changing sensitive electrical components in the rain or dense fog adds difficulty and risk to the task. Keeping the control panels indoors mitigates the risk and extra time it takes to work in the rain.
Redundant PLCs are more complicated to configure and maintain, and the number of system integrators staff with experience in configuring and maintaining these systems is limited. This will result in longer lead times for maintenance support or multiple trips to site before the issue is resolved.
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The engineer has evaluated the cost difference between Rockwell Automation’s redundant ControlLogix PLC and the simpler CompactLogix PLC systems. The cost of a redundant ControlLogix PLC system is more than two times the CompactLogix system. To mitigate the lack of redundancy, spare hardware will be added to the design so that shelf spares are ready when needed. The new control panel in the operations building will be configured to have a warm standby processor. This way, in the event of a PLC processor failure, the standby processor will be available on the network to except the programming (remote support) and then the onsite staff can replace the failed PLC with the standby processor. The fiber network ring will have redundant network switches at the connection to the SCADA servers. This way, if a break in the ring occurs, the servers will still be connected to the equipment on either side of the network break.
The new SCADA server rack and control panel will be in the operations building. The chief operator’s office will be repurposed as the SCADA server room. These new SCADA servers are noisy and generate additional heat. Modifications to this room to provide independent cooling, better air sealing, and noise mitigation will be part of this design.
To provide the needed resiliency, the SCADA system will use a dual-server architecture with redundant core switches and firewalls. Network attached storage with automated backs will provide a comprehensive backup and disaster recovery. This system will be installed to implement automated backup, which could be used in the case of an anomalous system event.
5.3.1 In-Plant Communications
The existing plant controls networking architecture is based on old design standards and old copper media with a flatter topology. This means the current industrial automation and control systems (IACS) network consists of a single network with open communications between the components of the IACS devices without regards to segmenting the IACS into multiple networks and separating and segmenting traffic for security and data flow efficiency. The basis of design for the new system is to adhere to architectures that align with the latest Purdue Model for IACS, the NIST 800-53 and 800-82 framework, and IEC/ISA 62443. Figure 5-1 shows the logical and conceptual network frameworks.
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Figure 5-1. Logical and Conceptual Network Frameworks
Source: https://www.nist.gov/image/figure-1-purdue-model-computer-integrated-manufacturing The physical network design will completely segment and separate the SCADA/operational technology (OT) environment from enterprise systems and the internet. Figure 5-2 shows separation of the external networks and systems and the plant SCADA environment.
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Figure 5-2. Representation of SCADA Environment Separation from Enterprise Systems and Internet Source: Courtesy of Cisco Systems, Inc. Unauthorized use not permitted. https://www.cisco.com/c/dam/en/us/td/i/200001-300000/250001-260000/256001-257000/256206.jpg.
Image captured June18, 2025.
Figure 5-3 shows the physical hardware topology to meet the logical requirements for the IACS network design in addition to the cybersecurity requirements of separation and segmentation from external systems.
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Figure 5-3. Collapse Core OT Network
Source: Courtesy of Cisco Systems, Inc. Unauthorized use not permitted. https://www.cisco.com/c/dam/en/us/td/i/300001-400000/370001-380000/379001-380000/379814.jpg.
Image captured June 18, 2025.
5.3.2 Control Logic Programming Standards
The development of PLC programming standards is crucial for establishing a framework that allows for modular code, providing operations with consistent control and maintenance features for various equipment such as motors (pumps), valves, and process instrumentation. These standards are designed to promote uniformity in code and tag naming, which is imperative for enabling high-performance HMIs.
Effective alarm management, as outlined in ISA 18.2, begins with well-structured code.
The PLC programming standards will encompass features specific to different equipment types and control algorithms. Additionally, these standards will cover PLC program tag naming conventions and documentation requirements, providing a clear and consistent approach to coding practices. This programming consistency not only facilitates easier maintenance and troubleshooting but also enhances the overall reliability and expandability of the control systems.
5.3.3 HMI Graphic Standards
HMI graphic standards are essential for allowing operators to efficiently and effectively interact with process automation systems. These standards, as outlined by ANSI/ISA-101.01-2015, aim to establish conventions, methodologies, and client-specific standards for developing HMI graphics applications. One of the primary goals of HMI displays is to present the most critical information in an manner that is easily decipherable by the operator. This involves using a color palette to differentiate types of data, with critical issues requiring immediate attention, such as alarms, highlighted in red to draw the operator's focus.
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Traditional HMI displays typically showed values for critical operator parameters, but modern standards emphasize the importance of providing additional context about how these parameters are changing and whether they are within the desirable range. This approach helps operators make more informed decisions, enhancing overall system efficiency and safety. Additionally, the ISA-18.2 standard for alarm management plays a crucial role in enhancing the effectiveness of HMI systems. This standard outlines the processes and procedures required to design, implement, operate, and maintain an effective alarm system. By following ISA-18.2, organizations can manage alarms in a way that improves safety and operational performance, reducing the likelihood of alarm fatigue and giving critical alarms the necessary attention.
The purpose of an HMI graphic standard is to provide a consistent look, feel, and operation across the HMI application, regardless of the development source or project. Graphic standards will be developed to collect and convey accurate information to all users, enabling informed control decisions and supporting the O&M staff in keeping the plant running efficiently. Standards facilitate the expandability and maintenance of HMI systems. Consistent application of these standards means that users can rely on the HMI displays to provide the necessary information for effective plant operation and management, ultimately contributing to the overall success and reliability of the process automation systems.
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6. Permitting
An Initial Study/Proposed Mitigated Negative Declaration document was developed by GHD summarizing the environmental analysis and is provided on Appendix B. The analysis noted that no permits are required for the activities at the WWTP (GHD 2020).
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7. Construction Cost Estimate
A Class 1 cost estimate was prepared in accordance with the guidelines of AACE International. AACE defines Class 1 estimates as the following:
Class 1 estimates are generally prepared to form the basis for budget authorization, appropriation, and/or funding. Typically, engineering is from 70% to 100% complete and would comprise virtually all engineering and design documentation of the project. Typical accuracy ranges for this class estimate are - 3% to -10% on the low side and +3% to +15% on the high side.
The Information Handling Services (IHS) Markit composite cost index tool is used to account for escalation over time.
7.1 Cost Estimate Results
Table 7-1 provides a summary of cost by facility.
Table 7-1. Estimate Summary for City of Fortuna WWTP
Facility Markup Value
Flow Equalization Pump Station and Flow Equalization Basin Liner $5,092,000 Mixed Liquor Distribution Box $655,000
Chemical Storage $1,247,000
Aeration Basins 4 and 5 and PE/RAS Mixing Box $17,612,000 Blower Facility $1,784,000
RAS/WAS Pump Station $2,498,000
MLR Pump Room and Storage Tanks $1,116,000
Operations Building $181,000
Electrical and SCADA Network $1,936,000
Other (site work and yard piping and Strong’s Creek Box) $4,202,000 Subtotal $36,320,000
Construction Contingency (10%) $3,632,000
Subtotal $39,953,000
Project Delivery Costs
Project and Construction Management 5% $1,998,000
Permitting 2% $800,000
Engineering Services During Construction 8% $3,197,000
Commissioning 2% $800,000
Design $5,400,000
SCADA System Upgrade $1,700,000
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Facility Markup Value
Estimated Total Project Cost $53,948,000
Low Range (-10%) Estimated Cost of Construction $48,550,000 High Range (+15%) Estimate Cost of Construction $62,040,000 Funding Application Technical Report Update
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8. References
GHD Group (GHD). 2020. Administrative Draft Initial Study/Proposed Mitigated Negative Declaration. City of Fortuna Wastewater Treatment and Effluent Percolation System Upgrade Project. Prepared for the City of Fortuna. January.
Grady Jr., C.P. Leslie, Glen T. Dagger, Nancy G. Love, and Carlos D.M. Filipe. 2011. Biological Wastewater Treatment. Third Edition. CRC Press.
Jacobs. 2024. Task 2.10 – SCADA System Update. Prepared for the City of Fortuna. July 1.
Jacobs. 2025. Project Definition Report – Final. Prepared for the City of Fortuna. June 5.
Jacobs. 2021. Task 2.1.2 – Process Model Development Technical Memorandum. October 20.
Pease, Michael. 2021. “Purdue Model of Computer Integrated Manufacturing.” Supporting Digital Transformation with Legacy Components. National Institute of Standards and Technology July 20.
SHN Consulting Engineers & Geologists, Inc. 2003. Geotechnical Report – Proposed Additions to Fortuna Wastewater Treatment Plant. November.
SHN Consulting Engineers & Geologist, Inc. 2025. Geotechnical Investigation Data Report, Proposed Wastewater Treatment Plant Improvements – City of Fortuna WWTP, 180 Dinsmore Drive, Fortuna, California; APN 200-353-02.
Appendix A.
New Tagging Standard for
Instrumentation and Equipment
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Tag Number Format: W 3 0 0 P - 3 1 0
New Tag (SCADA)
W100-LIT-120 Influent Pump Station Level Transmitter
W300-P-310 Primary Sludge Pump 1
W300-P-311 Primary Sludge Pump 2
W400-FIT-111 AB 4 Air flow meter
W400-FCV-112 AB 4 Air flow control valve
Collections C 100 440
Facilities F 100 450
Potable Water P 200 460
Wastewater W
210
480
300 490
300 500
300 500
310 600
350 700
400 800
401 850
402
403 900
404 950
405
406
407
AB5
Future AB6
Future AB7
Grit
Flow Equalization
Flow Equalization Basin
Pump Station
Primary Split
Primaries clarifiers
Future AB1
Future AB2
Future AB3
Facility Codes:
Headworks
Chemical Storage Facility
Aeration
AB4
Primary Sludge
PE/RAS Mixing Box
Process Areas:
404-FIT-111 N/A
404-FCV-112 N/A
300-P-310 P-310
300-P-311 P-311
-
New Tag (Field) Existing Tag & Description
100-LIT-120 LIT-120
Facility Code SCADA Area ISA Designator Loop
Tagging Guide Lines / Instrumentation
Part 1 Part 2 Part 3 Part 4
Polymer
Support Facilities
Electrical
Suffix
Process Areas cont'd:
GBT/WAS
Disinfection
Effluent
Plant Water
Digester
Blowers
Secondary Clarifiers
RAS
WAS Storage
BFP
Appendix B.
Administrative Draft Initial Study and
Proposed Mitigated Negative
Declaration
GHD | 718 3rd Street, Eureka CA 95501 | 11146364 | 02 | Report No 1 | January 24, 2020 Wastewater Treatment and Effluent
Percolation System Upgrade Project
Administrative Draft Initial Study & Proposed
Mitigated Negative Declaration
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Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND ADMINISTRATIVE Draft
Initial Study/Proposed Mitigated Negative Declaration
City of Fortuna
Wastewater Treatment and Effluent Percolation
System Upgrade Project
Prepared for:
City of Fortuna
P.O. Box 545
Fortuna, CA 95540
Prepared by:
GHD
718 Third Street
Eureka, CA 95501
January 2020
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND This page is intentionally left blank
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page i Table of Contents
Project Information.....................................................................................................................1-0 CEQA Requirements ...................................................................................................... 1-0 Project Background ........................................................................................................ 1-1 Purpose and Need.......................................................................................................... 1-2 Project Location.............................................................................................................. 1-2 Surrounding Land Uses and Existing Setting................................................................. 1-2 Project Description ......................................................................................................... 1-2 Project Construction ....................................................................................................... 1-6 Operation and Maintenance ........................................................................................... 1-8 Environmental Protection Actions Incorporated into the Project.................................... 1-8 Required Agency Approvals ........................................................................................... 1-9 Tribal Consultation.......................................................................................................... 1-9 Environmental Factors Potentially Affected...............................................................................2-1 Environmental Analysis..............................................................................................................3-1 Aesthetics ....................................................................................................................... 3-1 Agriculture and Forest Resources.................................................................................. 3-4 Air Quality ....................................................................................................................... 3-8 Biological Resources .................................................................................................... 3-11 Cultural Resources ....................................................................................................... 3-21 Energy .......................................................................................................................... 3-24 Geology and Soils ........................................................................................................ 3-26 Greenhouse Gas Emissions......................................................................................... 3-30 Hazards and Hazardous Materials ............................................................................... 3-32 Hydrology and Water Quality........................................................................................ 3-36 Land Use and Planning ................................................................................................ 3-41 Mineral Resources........................................................................................................ 3-43 Noise............................................................................................................................. 3-44 Population and Housing ............................................................................................... 3-47 Public Services ............................................................................................................. 3-48 Recreation .................................................................................................................... 3-49 Transportation............................................................................................................... 3-50 Tribal Cultural Resources ............................................................................................. 3-53 Utilities and Service Systems ....................................................................................... 3-55 Wildfire.......................................................................................................................... 3-58 Mandatory Findings of Significance ............................................................................. 3-59 References.................................................................................................................................4-1 Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page ii Report Preparers .......................................................................................................................5-1 City of Fortuna ................................................................................................................ 5-1 GHD................................................................................................................................ 5-1 Sub-consultants.............................................................................................................. 5-1 Table Index
Table 3.3-1 Construction Regional Pollutant Emissions......................................................................3-10 Table 3.13-1: Construction Equipment Reference Noise Levels as Measured at 50’ .........................3-45 List of Figures
Figure 1 Vicinity Map
Figure 2 Project Overview
Figure 3 Prime Agriculture Soils
Appendix Index
Appendix A Air Quality Modeling Results
Appendix B Biological Resources Report
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-0 Project Information
Project Title Wastewater Treatment and Effluent Percolation System Upgrade Project
Lead Agency Name & Address City of Fortuna
621 11th Street
P.O. Box 545
Fortuna, CA 95540
Contact Person & Phone Number Merritt Perry, City Manager, (707) 725-1410 Project Location Fortuna and Humboldt County, CA
Project Sponsor’s Name & Address City of Fortuna
621 11th Street
P.O. Box 545
Fortuna, CA 95540
General Plan Land Use Designation Fortuna WWTP: Public (PUB) Contingency Mid-River Drilling Point: Natural Resources (NR)
Percolation Field: Agriculture Exclusive (AE)
Zoning Fortuna WWTP: Public Facilities (PF)
Contingency Mid-River Drilling Point: Natural
Resources, Streams and Riparian Corridors Protection
(NR/R)
Percolation Field: Agriculture Exclusive, Archeological Resource Area, Streams and Riparian Corridors Protection, Transitional Agricultural Lands (AE-60/A, F, R, T)
CEQA Requirements
This project is subject to the requirements of the California Environmental Quality Act (CEQA). The lead agency is the City of Fortuna (City). The purpose of this Initial Study is to provide a basis for deciding whether to prepare an Environmental Impact Report, a Mitigated Negative Declaration or a Negative Declaration. This Initial Study is intended to satisfy the requirements of the California Environmental Quality Act, CEQA, (Public Resources Code, Div 13, § 21000-21177), and the CEQA Guidelines (California Code of Regulations, Title 14, § 15000-15387). CEQA encourages lead agencies and applicants to modify their projects to avoid significant adverse impacts. § 15063(d) of the State CEQA Guidelines states the content requirements of an Initial Study as follows:
1. A description of the project including the location of the project; Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-1
2. An identification of the environmental setting;
3. An identification of environmental effects by use of a checklist, matrix, or other method, provided that entries on a checklist or other form are briefly explained to indicate that there is some evidence to support the entries;
4. A discussion of the ways to mitigate the significant effects identified, if any;
5. An examination of whether the project would be consistent with existing zoning, plans; and other applicable land use controls;
6. The name of the person or persons who prepared or participated in the Initial Study.
Project Background
The City’s Wastewater Treatment Plant (WWTP) is regulated under the North Coast Regional Water Quality Control Board (NCRWQCB), and operates under waste discharge requirements issued by the NCRWQCB in Order No. R1-2017-0005, effective November 1, 2017.
The WWTP has a permitted dry weather average daily flow (ADF) capacity of 1.5 Million Gallons per Day (MGD), and wet weather ADF capacity of 7.0 MGD. According to the 2017 Annual Report (City of Fortuna 2018), the WWTP operates at an average dry weather flow of 0.760 MGD, and, during wet weather, can experience flows above 4.5 MGD. Peak influent flows over 3 to 4 MGD are diverted to equalization ponds and returned for treatment during lower flow periods. The WWTP currently treats an ADF of approximately 1.0 MGD (accounting for both dry weather and wet weather conditions). Approximately 90% of the connections to the collection system are residential and commercial users; the remaining 10% are industrial. The WWTP was originally constructed in 1974 under the City of Fortuna Water Pollution Control Facilities Project. In June 2007, an upgrade was completed to provide additional primary treatment, secondary clarification and a solids handling facility. The existing liquid treatment facilities include screening, grit removal, equalization, primary clarification, secondary biological treatment, secondary clarification, and chlorination/dechlorination.
The treated effluent is discharged to the Eel River or percolation ponds, depending on the time of year. From May 15th through September 30th, the City is prohibited from discharging treated effluent to the Eel River, and discharges to two percolation ponds, which allow disposal through infiltration into groundwater. The percolation ponds are located approximately 180 feet from the edge of the Eel River. From October 1st through May 14th, treated effluent is discharged into either the percolation ponds or Strongs Creek, a tributary of the Eel River. Studies have shown that there is the potential for hydraulic connection between the existing percolation ponds and the Eel River.
The Regional Board has required the City to implement an alternative method of summertime effluent disposal due to potential connectivity during periods when river discharge is not allowed.
The Regional Board is also requiring the City to upgrade the treatment system to improve treatment for ammonia and nitrate. As a result, the City must implement alternative methods of effluent disposal or reuse during the period May 15th through September 30th and upgrade the treatment system.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-2 Purpose and Need
The City obtained funding through the Clean Water State Revolving Fund (CWSRF) for planning of the Wastewater Treatment and Effluent Percolation System Upgrade Project (project). The objective of the project is to address compliance issues related to the disposal of treated effluent and construct a new disposal system to replace the historic May 15th through September 30th use of the WWTP percolation ponds. This will avoid the potential connection to the Eel River during the discharge prohibition period.
The City previously evaluated wastewater treatment, disposal, and reuse alternatives to address the compliance requirements related to the City’s discharge permit issued by the Regional Board. A number of alternatives were evaluated. The preferred alternative (the project) includes upgrade of the WWTP within the existing developed site to add Biological Nutrient Removal (BNR) and development of a treated effluent subsurface percolation facility (percolation field) on the opposite (western) side of the Eel River. The new percolation facility is located approximately 2,800 feet from the water’s edge during low flow conditions. This site is more than 15 times further from the river than the existing percolation ponds and thus has much greater hydrologic separation from the Eel River. Under the proposed project, treated effluent would be pumped from the existing treatment plant under the Eel River through a new, directionally-drilled pipeline.. A new pump station and piping modifications at the treatment plant would be required, along with a network of subsurface percolation pipes at the percolation site.
Project Location
The treatment upgrades would all be completed within the footprint of the existing developed WWTP. The new effluent percolation system would be located on the western side of the Eel River, opposite Fortuna, California (see Figure 1). The nearest roads are Pleasant Point Road and Renner Lane (see Figure 2). The new percolation field would be located on APN 106-091-030 and 106-091-040 currently owned by Troy Land and Trudy Ehmke. A temporary construction easement would be needed for APN 106-041-016 owned by Lester Pedrazzini, for the drill exit pit and pipe trenching. The new percolation field would be connected to the existing WWTP via the new pipeline directionally drilled under the Eel River.
Surrounding Land Uses and Existing Setting
The eastern project area consists of the existing WWTP. Surrounding land uses are a combination of heavy industrial (gravel operations) and commercial (wholesale/retail horticulture products).
Highway 101 is located to the east, and the Eel River is located to the west.
The western project area consists of the new effluent percolation fields. The site of the proposed percolation fields is generally surrounded by riparian forest land and open gravel bar areas used for four-wheel drive recreation. The site is bordered to the southeast by agricultural fields.
Project Description
1.6.1 Establish Site Access
The overall site for the new effluent percolation field is comprised of 60 acres that are generally located along the Eel River. Soils within the proposed site are primarily classified as Water and Fluvents, which is reflective of the historical movement of the Eel River in the area. Slopes range Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-3 from 0 to 2 percent. The western and southern portions of the site are classified as Udifluvents. The soil classifications are sourced from the most current USDA Natural Resources Conservation Service Web Soil Survey for Humboldt County (NRCS 2019).
According to the Humboldt County General Plan, the parcels are primarily zoned agriculture exclusive (AE) with the eastern edge of the parcels zoned natural resources (NR), both with combining overlays. The project site is located in the coastal zone and includes both State Coastal Jurisdiction and Local (Humboldt County) permit jurisdiction.
Site access to both the existing treatment plant as well as the new percolation field would be required for construction and ongoing operations. Existing roads would be used to access the WWTP.
The horizontal directionally drilled pipeline would be installed from the western side of the Eel River at the percolation field site. There would be up to three directional drill pits, including one main inlet pit, one main outlet pit, and, potentially, a third contingency inlet/outlet pit mid span, located on the Eel River floodplain. The main inlet pit would be located on the western side of the Eel River at the percolation field site. Existing farm roads off of Renner Lane would be utilized to provide site access to the main inlet pit on the western side of the Eel River at the percolation field. The existing farm roads would require minor grading and would be extended.
One drill pit would be located on the eastern side of the Eel River at the WWTP. Two potential western drill pit locations have been identified (see Figure 2; Option A, within an existing equalization basin at the WWTP, and Contingency B, just north of the WWTP). Existing access to the WWTP area would be used on the eastern side off of Dinsmore Drive.
A third drill pit may be installed along the pipe alignment if required by actual drilling conditions and would be accessed via existing unimproved roads along the Eel River gravel bar.
1.6.2 Improvement of Western Access Road
The existing farm road off Renner Lane is a dirt and gravel road that would be graded, and additional gravel would be placed and compacted to provide access to the treated effluent percolation field site. The improved access road would be approximately 15 feet wide by 5,150 feet long and would remain unpaved. The City of Fortuna would procure an easement or other legal right through the private property to provide access to the percolation field area.
1.6.3 Conveyance Pipe Connecting Existing WWTP and New Percolation Field
The new conveyance pipe would connect to the WWTP at an existing concrete wet well structure, which currently contains the City’s treated effluent pumps for emergency discharge to Strongs Creek during high flows. The new connection at the WWTP existing concrete wet well would include piping, pump installation, electrical connections, and installation of piping and fittings in the bottom of the earthen basin. Across the Eel River at the percolation field, there would be new piping fittings, and related appurtenances only.
The new conveyance pipe would be directionally drilled approximately 20 feet to 40 feet below the Eel River and 10 feet to 20 feet below Strongs Creek. The length of the directional drilling route would be approximately 4,800 feet. A drill pit would be required at the WWTP side and the Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-4 percolation field side. A third drill pit location may be utilized along the pipeline route and outside of the Eel River active channel if required by the actual drilling conditions and the contractor’s means and methods. The eastern pit would provide piping connectivity to the existing WWTP. The eastern pit location includes Option A, within an existing equalization basin at the WWTP, and Contingency B, just north of the WWTP (see Figure 2). The western pit would provide connectivity to the new percolation field.
A Horizontal Directional Drilling Hydrofracture Contingency Plan would be prepared to ensure that the potential for contamination of the surrounding area from drilling slurry is minimized and that contingency methods are in place in the event that the slurry is introduced into surface waters.
A linear pipe staging area is planned to the west of the percolation field along existing agricultural field fence lines. The pipe would be laid out in its entirety and fed into the directionally drilled inlet pit at the percolation field until it reaches the drill pit at the WWTP.
1.6.4 Effluent Percolation System
The new percolation system would be located on an approximate 2.0 acre portion of the upper river bar that is currently undeveloped (Figure 2). The river bar and future percolation area are used informally for off-road vehicle recreation. The percolation area is relatively open and is covered with seasonal grasses as well as occasional shrubs and trees. Off-road vehicles have heavily impacted the area, which is scarred with numerous vehicle trails and depressions. Areas surrounding the subsurface percolation site are characterized by areas of denser stands of riparian vegetation including cottonwood trees and willows. Historically, the proposed percolation area may have been riparian forest similar to the surrounding habitat, and subsequently cleared, although no historical photos observed show previous forest in the percolation area.
Construction of the percolation system would include: site grading and vegetation removal; trenching for transmission and infiltration pipes; and installation of valve boxes, cleanouts, and monitoring wells. Existing vegetation would be removed during grading and trenching, and seeded upon completion.
The new percolation system would distribute secondary treated effluent through a network of perforated pipes in trenches filled with porous gravel. The new percolation system would be designed for a maximum month average summer flow of 1.3 MGD with flexibility to expand in the future if needed.
The system was sized based on the results of field investigations and soils testing, field percolation testing, and laboratory testing using U.S. Environmental Protection Agency methods to guide the analysis and sizing of the system.
The primary percolation area would likely consist of two sets of 16 parallel pipes which are 2 inches in diameter, 100 feet long each, and perforated with 3/16 inch holes. The perforated pipes would be installed in infiltration trenches. These pipes would be connected through a manifold with isolation valves to control water to the pipes in pairs. Isolation valves would be installed in concrete boxes with lockable lids. A second identical reserve field would also be constructed as part of the initial project to support the existing WWTP effluent flows. The configuration allows for the potential to extend headers and install additional perforated piping if needed for future flows. It is expected that future extensions would have a similar configuration as proposed for the current project.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-5 Typically half of the infiltration lines would be in service at any one time, and able to infiltrate the maximum month average summer flow of 1.3 MGD. The use of the lines would be rotated periodically to allow them to rest. The rotation of the percolation system lines would be operated manually through the use of isolation valves without the need for electrical systems. Isolation valves would be installed to switch between main fields and to control pairs of infiltration lines in use.
No chemicals would be used at the percolation field.
1.6.5 WWTP Treatment Upgrades: Non-Proprietary Biological Nutrient Removal (BNR) Improved Secondary Treatment and Ultraviolet Disinfection
The City is required to meet effluent targets per the NPDES permit issued by the Regional Board.
The City’s NPDES permit currently required the City to upgrade the treatment system for improved removal of ammonia and nitrate. The City is proposing to add Biological Nutrient Removal (BNR) to the existing treatment train, which would include converting the aeration basins to the Modified Ludzack Ettinger (MLE) process, as well as modifying the waste activated sludge (WAS) and filtrate equalization (EQ) basins.
A phased construction approach would be used for the WWTP upgrades to allow the WWTP to stay in operation during construction. The construction to modify the WWTP to include the MLE process would consist of the following elements:
• Construction of a new aeration basin distribution box; • Sequentially converting aeration basins one at a time; • Implementing new dissolved oxygen (DO) control for each new basin as it comes online; • Installation of motorized inlet valves;
• Connecting each basin to new distribution box as it is brought online; and • Building an optional supplemental carbon storage tank.
The upgrade to the WAS and filtrate EQ basins includes the following:
• Demolition of some of the existing compost storage and construction of new compost storage;
• Construction of new WAS and filtrate EQ tanks;
• Connection of existing WAS and filtrate piping;
• Converting existing WAS and filtrate EQ tanks to expanded aeration tanks; • Aligning the new aeration tanks with the existing three aeration basins; and • Connecting the expanded aeration basins in sequence with the corresponding MLE tanks.
WWTP treatment upgrades may also include the addition of ultraviolet (UV) disinfection. If UV disinfection is implemented, iron that is present in the treated effluent can foul the UV bulbs and replace with text
provided
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-6 reduce the effectiveness over time. Therefore, an aluminium-based metal coagulant such as alum, sodium aluminate or polyaluminum chloride (PAC) may be used operationally.
1.6.6 Revegetation
Following construction, the percolation field area would be replanted with appropriate grass species. Additional areas outside of the percolation area may be planted with trees or other vegetation to develop additional riparian habitat and provide buffer and screening areas. Vegetation would generally not be removed at the WWTP facility; although disturbed ground would be reseeded, as has been the practice with previous WWTP upgrade projects.
Project Construction
1.7.1 Construction Schedule
Construction is anticipated to occur over an eight-month construction window planned to commence during a single construction season (2021, 2022, or 2023). Anticipated daytime work hours are 7:00 a.m. to 7:00 p.m., Monday through Friday with occasional work on Saturdays.
Construction on Sunday or legal and county holidays is not currently anticipated, except for emergencies or with prior approval from the City.
1.7.2 Construction Staging, Activities, and Equipment
Staging areas would be located at the existing WWTP and around the new percolation area. The approximate dimensions of the staging area at the WWTP would be 250 feet by 450 feet, and 350 by 150 feet staging area for the treatment upgrades. The staging area near the percolation field would be approximately 600 feet by 700 feet. The staging for the directionally drilled-pipeline would be roughly 4,300 feet long by 20 feet wide and extend along the edge of existing agricultural fields.
See Figure 2 for all staging locations.
Excess soils and construction materials would be stored on site within previously designated staging areas only. Excess soils may be re-used on site for backfill and finished grading. Excess soils would not be stockpiled on-site once the project is complete. The contractor may haul additional excess soils off site for use at other permitted sites.
Construction would primarily include site preparation such as trimming and/or removal of trees and vegetation, excavation and grading, open trench pipe installation, gravel access, roadway development, directional drilling, monitoring well installation, and final site grading and revegetation.
Water from permitted sources would be used for dust control and compaction and re-vegetation.
All construction activities would be accompanied by both temporary and permanent erosion and sediment control best management practices (BMPs). Project construction would include the following activities:
• Directional drilling – To install the new subsurface transmission piping under the Eel River; • Clearing and grubbing – To clear trees, vegetation and topsoil from the proposed treatment area and access road;
• Grading – Minor trenching for piping surface leveling and grading; • Excavation – Primarily at shallow excavations to maintain design grades; Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-7 • Embankment – Fill to maintain design grades through low areas; • Aggregate base – For the existing and extended access road; • Trenching – For the installation of piping including importing river run for trench backfill; • Demolition– For the treatment upgrades at the WWTP, including demolition of the compost storage;
• Structure Erection – For the WWTP treatment upgrades, including construction of an aeration basin distribution box, a carbon storage tank, and new compost storage; • Tank Erection – For the WWTP treatment upgrades and modifications to the existing WWTP.
Equipment required for construction would include: tracked excavators, backhoes, graders, bulldozers, dump trucks, vertical monitoring well drill rig, pipe drilling equipment, pipe fusing equipment, water trucks, bobcat, and pick-up trucks. It is not anticipated that any temporary utility extensions, such as electric power or water, would be required for construction.
1.7.3 Traffic and Access Control
The anticipated access route to the new effluent percolation field would be Highway 211 near Ferndale, California. Local roads then connect Waddington Road to Pleasant Point Road. The access road along existing farm roads would connect to Pleasant Point Road and Renner Lane and provide access to the site. Construction-related traffic would be limited to equipment mobilization at the new waste water disposal area and daily personnel travel. Due to the rural nature of the area, existing low levels of traffic, and anticipated low levels of construction-related traffic, the need for formal traffic control is not anticipated.
Secondary access is also available along multiple existing unimproved gravel roads near the Eel River floodplain departing from East Ferry Road. Floodplain access may be utilized to support the mid-point directional drilling location depending on the contractor’s means and methods.
Construction traffic would be limited to earthwork and directional drilling equipment and related support vehicles. Due to the minimal construction traffic anticipated at the waste water treatment plant, traffic control would not be necessary. Approximately 40 daily haul trips are anticipated on a peak day. Up to four work-weeks of peak days may occur.
1.7.4 Groundwater Dewatering
Groundwater dewatering is generally not expected to be required. However, if needed, temporary groundwater dewatering would involve pumping water out of a trench or excavation. Groundwater would typically be pumped to a settling pond, Baker tanks (or other similar type of settling tank), or into a dewatering bag. Dewatering water may also be percolated back into the ground (in uplands) or used for dust control and compaction, or re-vegetation irrigation.
1.7.5 Site Restoration and Closure
Following construction, the contractor would demobilize and remove equipment, supplies, and construction wastes. The disturbed areas would be restored to pre-construction conditions or stabilized with a combination of grass seed (broadcast or hydroseed), straw mulch, rolled erosion control fabric, and/or other plantings/vegetation.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-8 Operation and Maintenance
Maintenance and operation of the new treated effluent percolation system would generally require the following:
Access road maintenance including periodic blading and grading and addition of gravel; Ongoing monitoring of the system per the permit requirements; Periodic site observation and operation of valves to rotate active fields; Vegetation management;
Groundwater sampling;
General WWTP equipment maintenance;
Use of an aluminium-based metal coagulant to support UV disinfection at the WWTP, and Use of supplemental carbon for the nitrification reaction at the WWTP.
Operationally, pumping would be required to transport up to a monthly average of 1.3 MGD of treated effluent through the underground pipe to the opposite bank of the Eel River during the summer time subsurface effluent percolation period from May 15th through September 30th. Three 10 to 20 horsepower pumps would be used for pumping, although a maximum of two of the pumps would typically be in service at any one time.
Environmental Protection Actions Incorporated into the
Project
The following actions are included as part of the project to reduce or avoid potential adverse effects that could result from construction or operation of the project. Additional mitigation measures are presented in the following analysis sections in Chapter 3, Environmental Analysis. Environmental protection actions and mitigation measures, together, would be included in a Mitigation Monitoring Program at the time that the project is considered for approval.
1.9.1 Environmental Protection Action 1 – Implement Geotechnical Design Recommendations
As part of the project design process, the City would engage a California-registered Geotechnical Engineer to conduct a design-level geotechnical study for the project. The City would design the project to comply with the site-specific recommendations made in the project's geotechnical report.
The report would include seismic and foundation design criteria, technical requirements for direction drilling, as well as for site preparation and grading. The geotechnical recommendations would be incorporated into the final plans and specifications for the project, and would be implemented during construction.
1.9.2 Environmental Protection Action 2 – Stormwater Pollution Prevention Plan (SWPPP)
The project would seek coverage under State Water Resources Control Board (Water Board) Order No. 2009-0009-DWQ, Waste Discharge Requirements for Discharges of Storm Water Runoff Associated with Construction and Land Disturbance Activities. The City would submit permit registration documents (notice of intent, risk assessment, site maps, SWPPP, annual fee, and Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 1-9 certifications) to the Water Board. The SWPPP would address pollutant sources, best management practices, and other requirements specified in the Order. The SWPPP would include erosion and sediment control measures, and dust control practices to prevent wind erosion, sediment tracking, and dust generation by construction equipment. A Qualified SWPPP Practitioner would oversee implementation of the project SWPPP, including visual inspections, sampling and analysis, and ensuring overall compliance.
Required Agency Approvals
The following permits and approvals are likely to be required prior to construction:
Humboldt County – Encroachment, Grading, and Conditional Use Permits; North Coast Regional Water Board (NCRWB, or Regional Board) Clean Water Act Section 401 certification (if impacts to Waters or wetlands would occur); Construction stormwater discharge permit (National Pollutant Discharge Elimination System) from the State Water Resources Control Board;
Approval of State Revolving Fund application and initiation of consultation with applicable federal agencies with the State Water Resources Control Board Division of Financial Assistance; U.S. Army Corps of Engineers (USACE) Clean Water Act Section 404 permit (if impacts to Waters or wetlands would occur);
California Department of Fish and Wildlife (CDFW) Streambed Alteration Agreement; Coastal Commission Coastal Development permit;
State Lands Commission lease or permit.
Tribal Consultation
The City has received requests for notification of proposed projects from California Native American tribes pursuant to Public Resources Code Section 21080.3.1. Under Assembly Bill (AB) 52, notification letters were sent to local Native American tribes on January 13, 2020. No response has been received at this time.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 2-1 Environmental Factors Potentially Affected
The environmental factors checked below would be potentially affected by this project, involving at least one impact that is a “Potentially Significant Impact” as indicated by the checklist on the following pages. Where checked below, the topic with a potentially significant impact would be addressed in an appropriate environmental document:
Aesthetics Greenhouse Gas
Emissions
Public Services
Agricultural & Forestry
Resources
Hazards & Hazardous
Materials
Recreation
Air Quality Hydrology/Water Quality Transportation
Energy Land Use/Planning Tribal Cultural Resources
Biological Resources Mineral Resources Utilities/Service Systems Cultural Resources Noise Wildfire
Geology/Soils Population/Housing Mandatory Findings of
Significance
DETERMINATION (To be completed by the Lead Agency)
On the basis of this initial evaluation:
I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION would be prepared.
I find that although the proposed project could have a significant effect on the environment, there would not be a significant effect in this case because revisions in the project have been made by or agreed to by the project proponent. A MITIGATED NEGATIVE DECLARATION would be prepared.
I find that the proposed MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is required.
I find that the proposed project MAY have a “potentially significant impact” or “potentially significant unless mitigated” impact on the environment, but at least one effect: (1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and (2) has been addressed by mitigation measures based on the earlier analysis as described on attached sheets.
An ENVIRONMENTAL IMPACT REPORT is required, but it must analyze only the effects that remain to be addressed.
I find that the proposed project MAY have a “potentially significant impact” or “potentially significant unless mitigated” impact on the environment, but at least one effect: (1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and (2) has been avoided or mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the proposed project, nothing further is required. _______________________________ ____________________
City of Fortuna Signature Date
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Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-1 Environmental Analysis
Aesthetics
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Except as provided in Public Resources
Code § 21099, would the project:
a) Have a substantial adverse effect
on a scenic vista?
b) Substantially damage scenic
resources, including, but not limited
to, trees, rock outcroppings, and
historic buildings within a state
scenic highway?
c) In non-urbanized areas,
substantially degrade the existing
visual character or quality of public
view of the site and its
surroundings? (Public Views are
those that are experienced from
publicly accessible vantage point).
If the project is in an urbanized
area, would the project conflict with
applicable zoning and other
regulations governing scenic
quality?
d) Create a new source of substantial
light or glare which would adversely
affect day or nighttime views in the
area?
Visual resources within the project area east of the Eel River include the WWTP. Visual resources within the project area west of the Eel River include rural pastoral and riparian forest views, and western views into the coastal mountain foothills. The project area also includes the Eel River floodplain in the location of a potential directional drilling inlet/outlet (Figure 2 – Project Study Area).
Project activities include construction at the existing WWTP to provide treatment upgrades as well as construction of a new percolation system on the west side of the Eel River. An underground pipe would be directionally drilled under the Eel River to connect the two facilities and would not be visible, outside of temporary construction and staging for drill rigs. a) Have a substantial adverse effect on a scenic vista? (Less Than Significant Impact) The WWTP is located between Highway 101 and the Eel River. Planned treatment upgrades at the WWTP would not alter the existing visual character of the WWTP or the view within the vicinity of the project. Construction-related visual impacts related to WWTP treatment upgrades and the directionally drilled pipeline would be short-term. If vegetation mapped as ESHA is removed to develop the directional drilling pits (Contingency B only), revegetation of ESHA or re-seeding of appropriate species for erosion control best management practices (BMPs) would occur; thus visual change would be temporary until vegetation reestablishes at the Contingency B drill pit.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-2 The percolation field is located in an upland area west of the Eel River, adjacent to privately owned farm land. The percolation field is not visible from a public road. The percolation field and associated improved and extended access road is near a single residence; the landowner is a project cooperator and would enter into a site access agreement with the City to support both construction and operational use.
Due to its elevation, the percolation field is also not visible from the Eel River or floodplain. In its existing condition, the percolation field area is scarred by off-road vehicle trails and has been largely denuded of riparian vegetation, impairing the visual character of the area. Construction would be generally limited to a two-acre footprint. Vegetation mapped as ESHA removed to accommodate construction would be replanted in accordance with requirements established by the California Coastal Commission (CCC) and the California Department of Fish and Wildlife (CDFW).
Visual impacts related to construction would be temporary.
All project elements related to directional drilling and the percolation field would occur almost entirely underground and would not be visible upon completion of construction The project does not include elements or structures with any height of significance that could impede viewsheds or scenic vistas. There would be no operational effect on a scenic vista. The impact would be less than significant.
b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway? (No Impact) The project is not located within or near a state scenic highway (Caltrans 2019). The project area does not include any historic trees or rock outcroppings. The only buildings within the project area are those located at the WWTP, which are not historic. There would be no impact. c) In non-urbanized areas, substantially degrade the existing visual character or quality of public view of the site and its surroundings? (Public Views are those that are experienced from publicly accessible vantage point). If the project is in an urbanized area, would the project conflict with applicable zoning and other regulations governing scenic quality? (Less Than Significant Impact) The percolation field is located in a non-urbanized area but is not visible by the public or via a public roadway/vantage point. The percolation field is located in a visually impacted area, scarred by offroad vehicle trails. Significant portions of riparian vegetation have been degraded and removed as a result of off road vehicle use.
Site access to the eastern project area is consistent with the Eel River Area Local Coastal Plan (Section 3.41 (B) (1) (b)), which requires permitted landform alteration for access roads and public utilities to be minimized along natural corridors (Humboldt County 2014). Development of the percolation field and associated site access would be both minimal and consistent with existing site topography and visual character.
Any visual impacts related to construction would be temporary. Vegetation removed during construction would be replanted. Site access would be accomplished via an existing access road that would remain unpaved, and be extended slightly along an existing fence line in an area that is not visible to the public. Once complete, the project is likely to improve the visual character of the percolation field, which would largely include only underground infrastructure. Off-road-vehicle trails would be removed and vegetative cover surrounding the construction footprint is likely to improve as a result of planned revegetation efforts. The impact would be less than significant.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-3 d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? (No Impact)
The project does not include any temporary or permanent sources of light. There would be no impact.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-4 Agriculture and Forest Resources
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Convert Prime Farmland, Unique
Farmland, or Farmland of Statewide
Importance (Farmland), as shown on
the maps prepared pursuant to the
Farmland Mapping and Monitoring
Program of the California Resources
Agency, to non-agricultural use?
b) Conflict with existing zoning for
agricultural use, or a Williamson Act
contract?
c) Conflict with existing zoning for, or
cause rezoning of, forest land (as
defined in Public Resources Code §
12220(g)), timberland (as defined by
Public Resources Code § 4526), or
timberland zoned Timberland
Production (as defined by Government
Code § 51104(g))?
d) Result in the loss of forest land or
conversion of forest land to non-forest
use?
e) Involve other changes in the existing
environment which, due to their
location or nature, could result in
conversion of Farmland, to nonagricultural use or conversion of forest land to non-forest use?
Western project areas at the location of the percolation field, including associated access and staging areas, are zoned AE. The location of the potential contingency floodplain mid-point directional drilling inlet/outlet pit is also zoned AE/NR (Humboldt County 2019). The WWTP is zoned Public Facilities (PF) and does not include agricultural or forest resources. a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance)? (Less than Significant Impact)
Appendix G to the CEQA Guidelines suggests a finding of significance if a project would convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps for the Farmland Mapping and Monitoring Program (FMMP) by the California Natural Resources Agency (California Department of Conservation [DOC]), to non-agricultural uses. The project area does not contain Unique Farmland or Farmland of State Importance as shown on the maps prepared pursuant to the FMMP of the DOC, as soil data in Humboldt County has not been compiled into the FMMP (DOC 2019). However, the project area does include soils mapped as 132 – Udifluvents, which have been categorized as prime farmland if irrigated or drained (NRCS 2019). As such, this analysis assumes prime farmland present in some western project areas (see Figure 3 – Prime Agricultural Soils).
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-5 Eel River Area Local Coastal Plan
The Eel River Area Local Coastal Plan (Humboldt County 2014) includes the following applicable policies regarding agricultural lands:
3.34 (f): By assuring that public service and facility expansions and nonagricultural development do not impair agricultural viability, either through increased assessment costs or degraded air and water quality.
3.34 F: Public acquisition of lands designated Agriculture Exclusive shall be from willing sellers only.
Humboldt County
The Humboldt County General Plan (2017) includes the following applicable policies regarding agricultural lands:
AG-G2. Preservation of Agricultural Lands
Agricultural land preserved to the maximum extent possible for continued agricultural use in parcel sizes that support economically feasible agricultural operations.
AG-P5. Conservation of Agricultural Lands
Agricultural lands shall be conserved and conflicts minimized between agricultural and nonagricultural uses through all of the following:
A. By establishing stable zoning boundaries and buffer areas that separate urban and rural areas to minimize land use conflicts.
B. By establishing stable Urban Development, Urban Expansion and Community Planning Areas and promoting residential in-filling of Urban Development Areas, with phased urban expansion within Community Planning Areas.
C. By developing lands within Urban Development, Urban Expansion and Community Planning Areas prior to the conversion of agricultural resource production lands (AE, AG) within Urban Expansion Areas.
D. By not allowing the conversion of agricultural resource production lands (AE, AG) to other land use designations outside of Urban Expansion Areas.
E. By assuring that public service facility expansions and non-agricultural development do not inhibit agricultural viability, either through increased assessment costs, degradation of the environment, land fragmentation or conflicts in use.
F. By increasing the effectiveness of the Williamson Act Program.
G. By allowing historical structures and/or sensitive habitats to be split off from productive agricultural lands where it acts to conserve working lands and structures.
H. By allowing lot-line adjustments for agriculturally designated lands only where planned densities are met and there is no resulting increase in the number of building sites.
AG-P6. Agricultural Land Conversion – No Net Loss
Lands planned for agriculture (AE, AG) shall not be converted to non-agricultural uses unless the Planning Commission makes the following findings:
A. There are no feasible alternatives that would prevent or minimize conversion; Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-6 B. The facts support an overriding public interest in the conversion; and C. For lands outside of designated Urban Development Boundaries, sufficient off-setting mitigation has been provided to prevent a net reduction in the agricultural land base and agricultural production. This requirement shall be known as the “No Net Loss” agricultural lands policy. “No Net Loss” mitigation is limited to one or more of the following:
1. Re-planning of vacant agricultural lands from a non-agricultural land use designation to an agricultural plan designation along with the recordation of a permanent conservation easement on this land for continued agricultural use; or
2. The retirement of non-agricultural uses on lands planned for agriculture and recordation of a permanent conservation easement on this land for continued agricultural use; or
3. Financial contribution to an agricultural land fund in an amount sufficient to fully offset the agricultural land conversion for those uses enumerated in subsections a and b.
The operational details of the land fund, including the process for setting the amount of the financial contribution, shall be established by ordinance.
AG-P16. Protect Productive Agricultural Soils
Development on lands planned for agriculture (AE, AG) shall be designed to the maximum extent feasible to minimize the placement of buildings, impermeable surfaces or nonagricultural uses on land as defined in Government Code Section 51201(c) 1- 5 as prime agricultural lands.
AG-S7. Prime Agricultural Land.
Prime Agricultural land per California Government Code Section 51201(c) means:
A. All land which qualifies for rating as Class I or Class II in the Soil Conservation Service land use capability classifications.
B. Land which qualifies for rating 80 through 100 in the Storie Index Rating.
C. Land which supports livestock used for the production of food and fiber and which has an annual carrying capacity equivalent to at least one animal unit per acre as defined by the U.S.D.A.
D. Land planted with fruit or nut bearing trees, vines, bushes or crops which have a non- bearing period of less than five years and which would normally return during the commercial bearing period on an annual basis from the production of unprocessed agricultural plant production not less than $200.00 per acre. Humboldt County General Plan Adopted October 23, 2017 Part 2, Chapter 4. Land Use Element 4-32
E. Land which has returned from the production of unprocessed agricultural plant products on an annual gross value of not less than $200.00 per acre for three of the five previous years.
Prime agricultural soils are located west in some portions of the project areas near the percolation field (Humboldt County 2019, see Figure 3). Approximately 510 feet of the access road extension (shown as “new road” in Figure 3) would overlap with prime agricultural soils and convert approximately 7,650 square feet (< 0.2 acres) of pasture into an unpaved roadway. The existing farm road, approximately 2,530 feet in length, is also located on prime agricultural soils. The existing farm road spans two privately owned parcels, both zoned AE: APN 106-091-008-000 and 106-091-009-000 and totaling 329.99 acres. The access road extension is equivalent to 0.05% of the total area of the two combined parcels. The existing farm road is presently used to support Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-7 agricultural uses of the property. The footprint of the road extension is relatively small and would also support agricultural uses of the property, consistent with the use of the existing longer farm road (Figure 2). Because agriculture use of the property would continue undiminished and unimpeded and would benefit from the extended access road, the associated impact to prime agricultural soils would be less than significant.
The project is consistent with Section 3.34 (f) of the Eel River Local Coastal Plan, as the proposed access road extension would not interfere with the viability of surrounding agricultural uses and would instead enhance the viability of agricultural uses. Furthermore, under Humboldt County General Plan Policy AG-P6, the extension of the existing farm road to provide site access to the percolation field is consistent with an overriding public interest in development of a treated effluent disposal site (percolation field) for the public of the City of Fortuna, maintaining an essential public utility service. The project is further in the public interest in that it helps to ensure that water quality in the Eel River would be unimpacted by existing disposal methods via the percolation ponds currently in service at the WWTP.
A portion of the pipe staging area (approximately 2,370 linear feet) would overlap prime agriculture soils in the pasture. This area would be used solely to layout and feed the pipe into the directionally drilled inlet under the Eel River. Any impact would be temporary. Soil and vegetation disturbance is expected to be minimal. If vegetation is removed, the area would be reseeded with appropriate pasture species in coordination with the landowner. The impact associated with the temporary pipe staging to prime agricultural soils would be less than significant. b) Conflict with Agricultural Zoning or Williamson Act Contract? (Less than Significant Impact)
The project would not be located on lands under a Williamson Act contract (Humboldt County 2019). The WWTP is zoned Public Facilities (PF), which does not include zoning for agricultural or use. All project areas outside of the WWTP include AE zoning but are not enrolled in the Williamson Act (Humboldt County 2019). The two-acre planned percolation field area is not presently used for agricultural uses. Current use supports off-road vehicle recreation. Because the percolation infrastructure would be underground, future agricultural use of the facility would not be precluded. Therefore, the project would not conflict with the agricultural zoning. The potential impact would be less than significant.
c, d) Conflict with Forest Land Zoning or Convert Forest Land? (No Impact) There are no forest lands, timberland or timberland zoned Timberland Production in the project area; therefore, no forest land or timberland would be converted to non-forest or non-timberland use. No impact would result.
e) Convert Farmland or Forest? (Less than Significant Impact) The potential contingency directionally drilled mid-point inlet/outlet located on the Eel River floodplain is also zoned AE with a NR combining overlay, reflective of Eel River channel migration through time. This potential drilling location is near the low water margin of the Eel River and comprised entirely of floodplain (non-agrarian) habitat. Activity in this area would be temporary and farmland and/or natural resource uses would not be converted to any other conflicting use. There are no other changes in the existing environment related to the project that would impact Farmland or forest land in or adjacent to the study area. The potential impact will be less than significant.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-8 Air Quality
Potentially
Significant
Impact
Less-ThanSignificant With
Mitigation
Incorporation
Less-ThanSignificant
Impact
No
Impact
Where available, the
significance criteria established
by the applicable air quality
management district or air
pollution control district may be
relied upon to make the
following determinations. Would
the project:
a) Conflict with or obstruct
implementation of the
applicable air quality plan?
b) Result in a cumulatively
considerable net increase
in any criteria pollutant for
which the project region is
non-attainment under an
applicable federal or state
ambient air quality
standard?
c) Expose sensitive receptors
to substantial pollutant
concentrations?
d) Result in other emissions
(such as those leading to
odors) adversely affecting
a substantial number of
people?
The project is located within the North Coast Air Basin (Air Basin) which is managed by the North Coast Unified Air Quality Management District (NCUAQMD). The NCUAQMD monitors air quality; enforces local, State, and federal air quality regulations for counties within its jurisdiction; inventories and assesses the health risks of Toxic Air Contaminants (TACs); and adopts rules that limit pollution.
For construction emissions, the NCUAQMD has indicated that emissions are not considered regionally significant for projects whose construction would be relatively short in duration, lasting less than one year. For project construction lasting more than one year or that involves above average construction intensity in volume of equipment or area disturbed, construction emissions may be compared to the stationary source thresholds (NCUAQMD 2019). Construction is anticipated to last for approximately eight months. Although construction is anticipated to last less than one year, as a conservative approach to the analysis, emissions related to construction were calculated using the California Emissions Estimator Model (CalEEMod) version 2016.3.2 and are disclosed below. See Appendix A – Air Quality Modeling Results. a) Conflict with or obstruct implementation of the applicable air quality plan? (Less than Significant with Mitigation)
The U.S. Environmental Protection Agency (EPA) sets the National Ambient Air Quality Standards Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-9 for the following six criteria air pollutants: ozone, particulate matter (PM10 and PM2.5), nitrogen dioxide, carbon monoxide, lead, and sulfur dioxide. The California Air Resources Board (CARB) administers the California Ambient Air Quality Standards, which include the six criteria pollutants listed above as well as visibility-reducing particulates, hydrogen sulfide, sulfates, and vinyl chloride.
The NCUAQMD is listed as "attainment" or "unclassified" for all the federal and state ambient air quality standards with the exception of the state 24-hour particulate (PM10) standard in Humboldt County only. Primary sources of particulate matter in Humboldt County are on-road vehicles (engine exhaust and dust from paved and unpaved roads), open burning of vegetation (both residential and commercial), residential wood stoves, and stationary industrial sources (factories).
For the project, PM10 is of concern during construction because of the potential to emit fugitive dust during earth-disturbing activities. Operation of the project would not contribute PM10 of note. To address non-attainment for PM10, the NCUAQMD adopted a Particulate Matter Attainment Plan in 1995. This plan presents available information about the nature and causes of PM10 standard exceedances and identifies cost-effective control measures to reduce PM10 emissions to levels necessary to meet California Ambient Air Quality Standards. The control strategies relate to transportation control, land use, and open burning measures. The strategies are either implemented at the State or Air District level, or apply to land use projects. The project would not obstruct implementation of this plan. In addition, the NCUAQMD states that the plan, “should be used cautiously as it is not a document that is required in order for the District to come into attainment for the state standard” (NCUAQMD 2018).
Construction activities in the project area are subject to the NCUAQMD’s Rule 104 (Prohibitions) Section D (Fugitive Dust Emissions). Pursuant to Section D, the handling, transporting, or open storage of materials in such a manner, which allows or may allow unnecessary amounts of particulate matter to become airborne, shall not be permitted. Reasonable precautions shall be taken to prevent particulate matter from becoming airborne, including, but not limited to: 1) covering open bodied trucks when used for transporting materials likely to give rise to airborne dust; and 2) the use of water during the grading of roads or the clearing of land.
Improvement of the western access road as well as the new percolation field may result in fugitive dust emissions, which, if not handled correctly, could violate Rule 104. The impact to PM10 from project construction activities would therefore result in a significant impact.
Implementation of Mitigation Measure AIR-1 enhances compliance with Rule 104 by incorporating qualitative best management practices during construction. With implementation of Mitigation Measure AIR-1, the project would comply with applicable rules, and would not conflict with or obstruct implementation of the applicable air quality plan.
Mitigation
Mitigation Measure AIR-1: Dust Control
The City, at all times during construction, shall comply with Air Quality Regulation 1, Rule 104 (D) to the satisfaction of the NCUAQMD. This would require, but may not be limited to:
Water all active construction areas regularly to limit dust; control erosion and prevent water runoff containing silt and debris from entering the storm drain system; Cover trucks hauling soil, sand, and other loose material; Pave, water, or apply non-toxic soil stabilizers on unpaved access roads and parking areas; and
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-10 Sweep paved streets, access roads and parking areas daily if visible material is carried onto adjacent public streets.
Implementation of the following Mitigation Measure AIR-1 would reduce the impacts related to fugitive dust to less-than-significant.
b) Result in a cumulatively considerable net increase in any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard? (Less than Significant)
Construction activities would temporarily create emissions of equipment exhaust and other air contaminants during the eight-month construction period. As stated above, the NCUAQMD considers construction activities that last for less than one year to have a less-than-significant impact. Because construction would only last for eight months, the project’s impact from construction emissions would be less than significant.
For the purposes of disclosure, Table 3.3-1 summarizes construction-related emissions and compares them to the NCUAQMD’s stationary sources emission thresholds. Construction-related emissions were modeled to be well below NCUAQMD stationary source thresholds. The potential impact would be less than significant.
Table 3.3-1 Construction Regional Pollutant Emissions
Parameter Emissions (tons)
ROG NOX CO PM10
Project Construction 0.03 0.21 0.23 6.47
NCUAQMD Stationary Source Thresholds 40 40 100 15
c) Expose sensitive receptors to substantial pollutant concentrations? (Less than Significant)
Sensitive receptors include school-aged children (schools, daycare, playgrounds), the elderly (retirement community, nursing homes), the infirm (medical facilities and offices), and those who exercise outdoors regularly (public and private exercise facilities, parks). The nearest residence to the project site is approximately 1,600 feet to the east, across US Highway 101. Other potential sensitive receptors occurring near the project site include the Fortuna Middle School, approximately 2,000 feet to the north, and South Fortuna Elementary School, approximately 4,000 feet to the east.
Construction of the project would be short in duration and would vary in location, thus not resulting in concentrated pollutants in any one area. Because of the distance to potential sensitive receptors, limited construction period, and geographical distribution of construction activities, exposure of sensitive receptors to substantial pollutant concentrations would be less than significant. d) Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people? (Less than Significant)
Minor odors from the use of equipment during construction activities would be intermittent and temporary and would dissipate rapidly from the source with an increase in distance. This impact would be less than significant.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-11 Biological Resources
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Have a substantial adverse effect, either
directly or through habitat modifications,
on any species identified as a candidate,
sensitive, or special-status species in
local or regional plans, policies, or
regulations, or by the California
Department of Fish and Game or U.S.
Fish and Wildlife Service?
b) Have a substantial adverse effect on
any riparian habitat or other sensitive
natural community identified in local or
regional plans, policies, regulations or
by the California Department of Fish and
Game or US Fish and Wildlife Service?
c) Have a substantial adverse effect on
state or federally protected wetlands
(including, but not limited to, marsh,
vernal pool, coastal, etc.) through direct
removal, filling, hydrological interruption,
or other means?
d) Interfere substantially with the
movement of any native resident or
migratory fish or wildlife species or with
established native resident or migratory
wildlife corridors, or impede the use of
native wildlife nursery sites?
e) Conflict with any local policies or
ordinances protecting biological
resources, such as a tree preservation
policy or ordinance?
f) Conflict with the provisions of an
adopted Habitat Conservation Plan,
Natural Community Conservation Plan,
or other approved local, regional, or
state habitat conservation plan?
Analysis in this section is based on the project’s Biological Resources Report (GHD 2019a), included as Attachment B.
a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? (Less Than Significant with Mitigation) Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-12 Special-status Plant Species and Sensitive Natural Communities Special status plant species under State jurisdiction include those listed as endangered, threatened, or as candidate species by the California Department of Fish and Wildlife (CDFW) under the California Endangered Species Act (CESA). Plant species on CNPS California Rare Plant Ranking (CRPR) Lists 1A, 1B and 2A and 2B are considered eligible for state listing as endangered or threatened pursuant to the California Fish and Game Code and CDFW has oversite of these special status plant species as a trustee agency. As part of the CEQA process, such species should be considered as they meet the definition of Threatened or Endangered under Sections 2062 and 2067 of the California Fish and Game Code. There are occasions where CRPR List 3 or 4 species might be considered of special concern particularly for the type locality of a plant, for populations at the periphery of a species range, or in areas where the taxon is especially uncommon or has sustained heavy losses, or from populations exhibiting unusual morphology.
One sensitive natural community was identified within the project area. Black cottonwood (Populus trichocarpa) forest occurs within the proposed effluent disposal area, and borders the proposed effluent percolation field on the south and east sides. This community type also occurs within the proposed project location for the directional drilling inlet on the east side of the Eel River. Black cottonwood forest alliance has a state rank of S3 and is considered Sensitive by CDFW, and it is assumed that the areas mapped as black cottonwood forest alliance would be considered an Environmentally Sensitive Habitat Area under the Eel River Area Local Coastal Plan and the Coastal Act.
No seasonally appropriate surveys for special status plants have been performed within the project area. Based on database searches, historical records, and an overview of the primary literature, only two special status species have a moderate or high potential of occurring in the project area.
Wolf’s evening primrose (Oenothera wolfii) has a CRPR of 1B.1 and has a moderate likelihood of occurring within the project area. Maple leaved checkerbloom (Sidalcea malachroides) has a CRPR of 4.2 and also has moderate likelihood of occurring within the project area. Five additional special status species are thought to have a low likelihood of occurring within the project area (GHD 2019a). Given that required protocol plant surveys are still underway, and because of the proximity of the project area to known populations of special-status plants, the impact on special-status plants is considered potentially significant.
Mitigation
Mitigation Measure BIO-1 would reduce the potential impact of the project on special-status plants to a less-than-significant level by requiring pre-construction surveys and measures to avoid take of species and compensation for loss of any habitat.
Mitigation Measure BIO-1: Protect Special Status Plants Mitigation measures for special status plant species are addressed collectively for all species. Significant impacts to special-status plant species present or likely to be present onsite shall be minimized, avoided, and (if necessary) compensated by complying with the following:
• Pre-construction surveys: Seasonally appropriate pre-construction surveys for special status plant species shall occur prior to construction within the planned area of disturbance for the project, during the appropriate blooming time (spring or summer) for the target species. Survey methods shall comply with CDFW rare plant survey protocols, and shall be performed by a qualified field botanist. Surveys shall be modified to include detection of juvenile (pre-flowering) colonies of Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-13 perennial species when necessary. Any populations of special status plant species that are detected shall be mapped. Populations shall be flagged if avoidance is feasible and if populations are located adjacent to construction areas. • The locations of any special status plant populations to be avoided shall be clearly identified in the contract documents (plans and specifications). • If special status plant populations are detected where construction would have unavoidable impacts, a compensatory conservation plan shall be prepared and implemented in coordination with CDFW. Such plans may include salvage, propagation, on-site reintroduction in restored habitats, and monitoring.
With the implementation of Mitigation Measure BIO-1, potential impacts to special status plants would be less than significant.
Special-status Wildlife Species
The only special status wildlife species with the potential to occur in the project area is the North American Porcupine (Erethizon dorsatum), which is a State Special Status Species (GHD 2019a).
North American Porcupines are primarily nocturnal, but can sometimes be seen during the day.
They are approximately 27 inches in length with yellowish quills on the head, rump, and upper surfaces of the tail. Their range extends across mainland Canada, Alaska, and the western and northeastern United States. They use a wide variety of habitats, but are most common in montane conifer, Douglas fir, and alpine dwarf‐shrub. There are numerous occurrence records (both historical and recent) from the larger project vicinity, especially the Eel River estuary, and suitable habitat for the species is present on site (GHD 2019a). Although there are records of North American Porcupines from the general project vicinity and they have a moderate potential to occur onsite, no impacts are expected to occur to this species. The species is highly mobile and, if present, is expected to leave the project area once construction activity commences. Although some foraging habitat (riparian forest) would be removed in association with this project, substantial foraging habitat suitable for this species is present in the surrounding area (riparian forest along the Eel River). As no impacts to this species are expected, the potential impact would be less than significant.
Special-status Fish Species
Federally threatened salmonids (Coho Salmon (Oncorhynchus kisutch), federally threatened Northern California Steelhead (Oncorhynchus mykiss irideus), and Chinook Salmon (Oncorhynchus tshawytscha) are known to occur nearby in the Eel River and could potentially be impacted by project construction. Additional species which could be nearby and potentially impacted include Green Sturgeon (Acipenser medirostris), which is listed as federally threatened, Pacific Lamprey (Entosphenus tridentatus), which is a State Species of Special Concern, and Coastal Cutthroat Trout (Oncorhynchus clarkia clarkia), also a State Species of Special Concern. The Eel River is designated Critical Habitat for Coho Salmon, Northern California Steelhead, and Chinook Salmon.
Essential Fish Habitat also occurs in the Eel River between the two primary project areas.
Special-status fish species were evaluated in the Biological Resources Report (GHD 2019a). With the exception of Green Sturgeon, all other above-noted special status fish species have the potential to be present at or near the project site during construction. Due to the nature of the project, there is potential for adverse effects to these species and their habitats from construction activities occurring adjacent to the river (e.g. possibility for sediment discharge), and beneath the river (e.g. possibility for directional drilling to erroneously puncture the river bottom or cause a fracout). However, the project, at its closest location to the Eel River, is located approximately 100 feet Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-14 from the banks of the Eel River at the WWTP at the drill pit. The horizontal directional drilling would be completed by trained professionals at approximately 20 feet to 40 feet below the Eel River and 10 feet to 20 feet below Strongs Creek, which would not disturb in-stream habitat because no physical activity would take place within the river and stream channels. The potential impact on special-status fish species would be potentially significant.
Mitigation Measures HWQ-1 and HWQ-2 (see Section 3.10 (a)) would serve to protect water quality during construction and require development of a Frac-Out Contingency Plan. Mitigation Measure BIO-6 (see Section 3.4 (c) below) establishes avoidance and minimization measures to protect waters from sediment-related impacts. With the implementation of Mitigation Measures HWQ-1, HWQ-2, and BIO-6, the impact to special status fish would be less than significant.
Special-status Amphibian Species
Northern Red-legged Frogs (Rana aurora) are a State Species of Concern and occur along the west coast of North America from British Columbia to California and were evaluated in the Biological Resources Report (GHD 2019a). The geographic range split between the Northern and California Red-legged Frog species occurs just south of Elk Creek in Mendocino County where both species overlap. Northern Red-legged Frogs are typically found near freshwater sources (e.g., wetlands, ponds, streams, etc.). However, they can range widely and inhabit damp places far from water. Northern Red-legged Frogs reproduce in water from December to February in Humboldt County, with some breeding occurring as late as March. Preferred egg laying locations are in “vegetated shallows with little water flow in permanent wetlands and temporary pools.” Northern Red-legged Frogs are relatively common in and near coastal portions of Humboldt County and recent records have documented the species near the project area. This being the case, Northern Red-legged Frogs have a moderate chance of occurring within the project area. Northern Redlegged Frogs have also been documented at the WWTP on previous site visits. Therefore, the potential impact on Northern Red-legged frogs is considered significant.
Western Pond Turtles (pond turtles) (Emys marmorata) are a State Species of Concern and occur in a variety of permanent and semi-permanent freshwater aquatic habitats including lakes, rivers, ponds, creeks, and marshes and were also assessed in the Biological Resources Report (GHD 2019a). Pond turtles are known to be present in the general vicinity and may occur along the river bank not far from the project area. Breeding can occur on loose soils on south or west facing slopes so a few pond turtles may venture away from the river into the project area. The species is frequently observed basking on exposed banks, logs, and rocks. Winter activity is possible but limited to unusually warm, sunny days; normally pond turtles are dormant during winter months on the north coast; dormancy typically involves burrowing into loose substrate above the high water mark. Pond turtles have been documented nesting up to 0.5 kilometers from water. Thus, Western Pond Turtles have a moderate chance of occurring within the project area although presence would likely be occasional, seasonal, and temporary. The potential impact to individual Western Pond Turtle is considered significant.
Mitigation
Mitigation Measure BIO-2 would reduce the impact of the project on special status amphibians and reptiles to less-than-significant levels by requiring pre-construction surveys by qualified biologists prior to work in applicable habitats, and measures to avoid take of species.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-15 Mitigation Measure BIO-2: Protect Special Status Amphibians and Reptiles No more than one week prior to commencement of ground disturbance within 50 feet of suitable Northern Red-legged Frog or Western Pond Turtle habitat, a qualified biologist shall perform a pre-construction survey and shall relocate any individuals of Northern Redlegged Frog or Western Pond Turtle or egg masses of Northern Red-legged Frog that occur within the work -impact zone to nearby suitable habitat.
In the event that a Northern Red-legged Frog or Western Pond Turtle is observed in an active construction zone, the contractor shall halt construction activities in the area where observed and the frogs or turtles shall be moved to a safe location in similar habitat outside of the construction zone. The same measures above shall apply to Foothill Yellow-legged Frogs which are State Species of Concern and are no longer a CESA candidate.
With the implementation of Mitigation Measure BIO-2, potential impacts to special status amphibians and reptiles will be less than significant.
Passerines and Raptors
In support of the Biological Resources Report (GHD 2019a), reconnaissance-level bird surveys occurred at the project area. During this survey, special-status species observed included Cooper’s Hawk (Accipiter cooperi), Sharp-shinned Hawk (Accipiter striatus), Great Egret (Ardea alba), Whitetailed Kite (Elanus leucurus), and American Peregrine Falcon (Falco peregrinus anatum). Additional special status species were documented as having potential to occur at the project area, including Snowy Egret (Egretta thula), Black-crowned Night Heron (Nycticorax nycticorax), and Osprey (Pandion haliaetus). In addition, native migratory birds may also be present at the project area. If nesting passerines or raptors were present in trees in the project area, construction noise and/or tree removals would have the potential to impact the species. The impact is considered significant.
Mitigation
Mitigation Measure BIO-3 would reduce the impact of the project on nesting passerines or raptors to less-than-significant levels by requiring pre-construction surveys by qualified biologists prior to work in applicable habitats, and measures to avoid take of species.
Mitigation Measure BIO-3: Protect Special Status, Migratory, and Nesting Birds
Ground disturbance and vegetation clearing shall be conducted, if possible, during the fall and/or winter months and outside of the avian nesting season (March 15 – August 15) to avoid any direct effects to special status and protected birds. If ground disturbance cannot be confined to work outside of the nesting season, a qualified ornithologist shall conduct pre-construction surveys within the vicinity of the project area, to check for nesting activity of native birds and to evaluate the site for presence of raptors and special status bird species. The ornithologist shall conduct at minimum a one day pre-construction survey within the 7-day period prior to vegetation removal and ground-disturbing activities. If ground disturbance and vegetation removal work lapses for seven days or longer during the breeding season, a qualified ornithologist shall conduct a supplemental avian preconstruction survey before project work is reinitiated.
If active nests are detected within the construction footprint or within the construction buffer established by the project biologist, the biologist shall flag a buffer around each nest.
Construction activities shall avoid nest sites until the biologist determines that the young have fledged or nesting activity has ceased. If nests are documented outside of the Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-16 construction (disturbance) footprint, but within the construction buffer, nest buffers would be implemented as needed. In general, the buffer size for common species would be determined on a case-by-case basis in consultation with CDFW. Buffer sizes would take into account factors such as (1) noise and human disturbance levels at the construction site at the time of the survey and the noise and disturbance expected during the construction activity; (2) distance and amount of vegetation or other screening between the construction site and the nest; and (3) sensitivity of individual nesting species and behaviors of the nesting birds.
If active nests are detected during the survey, the qualified ornithologist shall monitor all nests at least once per week to determine whether birds are being disturbed. Activities that might, in the opinion of the qualified ornithologist, disturb nesting activities (e.g., excessive noise), shall be prohibited within the buffer zone until such a determination is made. If signs of disturbance or distress are observed, the qualified ornithologist shall immediately implement adaptive measures to reduce disturbance. These measures may include, but are not limited to, increasing buffer size, halting disruptive construction activities in the vicinity of the nest until fledging is confirmed or nesting activity has ceased, placement of visual screens or sound dampening structures between the nest and construction activity, reducing speed limits, replacing and updating noisy equipment, queuing trucks to distribute idling noise, locating vehicle access points and loading and shipping facilities away from noise-sensitive receptors, reducing the number of noisy construction activities occurring simultaneously, and/or reorienting and/or relocating construction equipment to minimize noise at noise-sensitive receptors.
With the implementation of Mitigation Measure BIO-3, potential impacts to special status, migratory, and nesting birds would be less than significant.
Bats
Several special status bat species have the potential to be present at or near the project area, including the Pallid Bat (Antrozous pallidus), Townsend’s Big-eared Bat (Corynorhinus townsendii), Hoary Bat (Lasiurus cinereus), and Yuma myotis (Myotis yumanensis).
Habitat for bats (tree cavities, loose bark, riparian forest, etc.) is present in the project area (based on reconnaissance level surveys). Vegetation and structures in the project area likely provide habitat to a variety of bat species. Construction of the project may adversely impact special-status bat species through the removal or modification of vegetation or structures and due to ground disturbance. The impact is considered significant. Mitigation Measure BIO-4 has been incorporated into the project to ensure potential impacts to special status bats would be less than significant.
Mitigation
Mitigation Measure BIO-4 would reduce the impact of the project on special status bats to lessthan-significant levels by requiring pre-construction surveys by qualified biologists prior to work in applicable habitats, and measures to avoid take of species.
Mitigation Measure BIO-4: Protect Special Status Bats
A qualified bat biologist shall conduct habitat surveys for special-status bats. Survey methodology should include visual examination of suitable habitat areas for signs of bat use and may utilize ultrasonic detectors to determine if special status bat species utilize the vicinity. Trees within 300 feet of construction activities should be examined. If habitat exists, species presence and site use patterns should be documented, including roost Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-17 sites. Bat presence in the project may vary seasonally and annually. Surveys should be conducted in a manner to detect the presence of hibernating or torpid bats, reproductive colonies and/or migratory stop‐over roosts. If no bat utilization or roosts are found, then no further study or action is required. If bats are found to utilize the project vicinity, or presence is assumed, a bat specialist should be engaged to advise the best method to prevent impact. This may include, but would not be limited to:
Consultation with the California Department of Fish and Wildlife to determine appropriate measures for protecting bats with young if present, and for implementing measures to exclude non-breeding bat colonies during construction process. Phased removal of trees where selected limbs and branches not containing cavities are removed on the first day, with the remainder of the tree removed on the second day.
The implementation of Mitigation Measures BIO-4 would protect against potential project impacts to special status bats, sufficiently reducing the potential effect to be less than significant. b,c) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or US Fish and Wildlife Service, including wetlands? (Less Than Significant with Mitigation)
Mapping of sensitive natural communities occurred on November 6 and November 12, 2019.
Components of the project were visited and surveyed for vegetation communities; additional developed project components (e.g. existing stockpile areas near the WWTP) were analyzed via aerial imagery (GHD 2019a). One sensitive natural community was identified within the project area. Black cottonwood (Populus trichocarpa) forest occurs within the percolation field area. The black cottonwood community borders the percolation field area on the south and east sides. The riparian vegetation occurring within the proposed project location for the drill pit on the east side of the Eel River, at the existing WWTP, was also identified and mapped as black cottonwood forest.
Black cottonwood forest alliance has a state ranking of S3 and is considered Sensitive by CDFW.
The vegetation mapped as black cottonwood forest alliance is riparian vegetation which would also be regulated by the California Department of Fish and Wildlife through the Lake and Streambed Alteration permit process (California Department of Fish and Game Code Section 1602).
As no impacts to the riparian forest surrounding the future percolation field are anticipated, alliance level mapping was not performed for these specific riparian areas. However, black cottonwood was observed in the overstory canopy of the adjacent riparian forest adjacent to both the access route and also adjacent to the potential staging area for the pipe and it is likely this forest would also fit the black cottonwood forest alliance.
Actual limits of construction have yet to be finalized. Mapped sensitive natural communities would be avoided to the greatest extent practicable; however, the project may potentially require vegetation and tree removal that would impact the black cottonwood habitat. Therefore, the impact on black cottonwood forest is considered potentially significant.
The project may also potentially require temporary disturbance and/or permanent fill of seasonal wetlands within the construction area. Potential impacts to seasonal wetland and other jurisdictional waters would be significant.
Mitigation
Mitigation Measures BIO-5 through BIO-7 require avoidance and minimization of permanent Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-18 impacts and temporary impacts to sensitive natural communities and wetlands during construction, restoration of pre-project conditions at the conclusion of construction, and compensation of regulated wetlands and sensitive natural communities, thereby reducing potential impacts to natural communities and wetlands to a less-than-significant level.
Mitigation Measure BIO-5: Compensatory Mitigation for Sensitive Natural Communities
Construction within mapped sensitive natural communities (black cottonwood) shall be avoided to the greatest extent practicable. If impacts are unavoidable and black cottonwood trees mapped as ESHA are removed or detrimentally impacted, mitigation would occur. A Mitigation and Monitoring Plan shall be prepared in coordination with State resource agencies.
The Plan shall be acceptable to State agencies with jurisdiction and include the following elements: proposed mitigation ratios; description and size of the restoration or compensatory area; site preparation and design; plant species; planting design and techniques; maintenance activities; plant storage; irrigation requirements; success criteria; monitoring schedule; and remedial measures. The ratio and conditions of mitigation would be negotiated in consultation with the City and State resource agencies with jurisdiction over sensitive natural communities. The Plan shall be implemented by the City.
Mitigation Measure BIO-6: Avoidance and Minimization Measures to Protect Juxtaposed Wetlands
One – and three-parameter wetland delineation will occur within the project footprint and will include identification of adjacent wetlands (juxtaposed). The City shall implement the following avoidance and protection measures for juxtaposed Waters of the United States and Waters of the State that would not be impacted (filled or excavated) during project construction:
1. The City shall attempt to avoid or minimize impacts to wetlands/waters to the greatest extent feasible in the final design plans.
2. Juxtaposed wetlands shall be clearly identified in the construction documents and reviewed by the City prior to issuing for bid to ensure they are clearly marked as equipment exclusion zones during construction.
3. Suitable perimeter control BMPs, such as silt fences, or straw wattles shall be placed below all construction activities at the edge of surface water features to intercept sediment before it reaches the waterway. These BMPs shall be installed prior to any clearing or grading activities.
Mitigation Measure BIO-7: Compensate for Loss of Wetlands and Waters One – and three-parameter wetland delineation will occur within the project footprint. The City shall conduct a seasonally appropriate pre-construction wetland delineation in areas to be impacted by project construction that may include wetlands (both temporary and permanent impacts). The City shall avoid fill of seasonal wetlands and waters, to the extent feasible. If fill cannot be avoided, the City shall compensate for the loss of seasonal wetland habitat so that there is no net loss in wetlands. The City shall compensate for impacts to identified wetlands through restoration, rehabilitation, and/or creation of wetland at a ratio Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-19 of no less than 1:1. A Mitigation and Monitoring Plan shall be prepared in coordination with the NCRWQB, the USACE and the CCC. Compensation for wetlands shall occur so there is no net loss of wetland habitat at ratios to be determined in consultation with the NCRWQCB. The Plan shall be acceptable to the regulatory agencies with jurisdiction over wetlands and waters and include the following elements: proposed mitigation ratios; description and size of the restoration or compensatory area; site preparation and design; plant species; planting design and techniques; maintenance activities; plant storage; irrigation requirements; success criteria; monitoring schedule; and remedial measures. The Plan shall be implemented by the City.
The City shall also compensate for impacts to other waters by obtaining required permits from the U.S. Army Corp of Engineers, the North Coast Regional Water Quality Control Board, and the California Department of Fish and Game shall be received prior to the start of any on-site construction activity. The City shall ensure any additional measures outlined in the permits are implemented.
Implementation of Mitigation Measures BIO-5 through BIO-7 will reduce potential impacts to wetlands to a less-than-significant level.
d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? (Less Than Significant with Mitigation)
Project construction and operations do not include in-water work or any other activity that might impede fish migration. Terrestrial project construction and operations do not include construction of any barriers to wildlife migration (e.g. fencing, highly developed roadway, or large structures).
Deterrence of migratory and nesting birds associated with noise is addressed in Section 3.4 (a) with Mitigation Measure BIO-3 to ensure the potential impact to migratory and nesting birds would be less than significant.
e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? (Less Than Significant) Tree removal may occur to support construction of the two-acre percolation field, which is in the jurisdiction of Humboldt County. Utilization of drill pit Contingency B may also necessitate tree removal and is located within the jurisdiction of the City.
City of Fortuna
The WWTP and other eastern project areas are within the jurisdiction of the City of Fortuna. The City of Fortuna General Plan’s Resource Management and Conservation Element establishes policies to protect biological resources within City limits including protected streams and wetlands (City of Fortuna 2010). Applicable policies include:
• NCR-2.1 Riparian Corridor Protection
• NCR-2.10 Wetland Identification and Protection
• NCR-2.12 Permitted Activities with ESHAs
• NC-2.13 Watercourse, Wetland and Riparian Buffers
Section 17.06.171 (B) (Removal of natural materials) of the City’s Zoning Code address tree removal and states that the removal of trees shall occur in accordance with applicable sections of the California Forest Practices Act. If the Forest Practices Act is applicable, a Use Permit must be Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-20 obtained from the planning commission prior to any removal of trees. The project area does not include forest resources; thus the Forest Practices Act is not applicable.
Eel River Area Local Coastal Plan
The Eel River Area Local Coastal Plan (Humboldt County 2014) identifies land uses and standards by which development would be evaluated within the Coastal Zone. Applicable policies include:
• 3.41: Protection of Environmentally Sensitive Habitat Areas o 3.41 B: Wetland Identification and Development Policies o 3.41 F-4: Development and Uses within the Riparian Corridor o 3.41 F-5: Development and Uses within the Riparian Forest (located outside of the riparian corridor)
o 3.41 F-6: Other Riparian Protection Measures
Humboldt County
The Open Space and Conservation Element of the Humboldt County General Plan (2017) summarizes policies germane to the protection of biological resources. Applicable policies include:
• BR-P1: Wetland Identification,
• BR-S10: Development Standards for Wetlands, and
• BR-S11: Wetlands Defined.
Policy BR-S10 established that development standards for wetlands shall be consistent with the standards for Streamside Management Areas (SMA). The SMA width applied to wetlands is designated as 50 feet for seasonal wetlands and 150 feet for perennial wetlands. The setback begins at the edge of the delineated wetland.
Humboldt County does regulate tree removal for trees larger than 12 inches in diameter that are in residential zones through a Special Permit. As all potential tree removal associated with the project would occur outside a residential zone, Humboldt County’s tree removal policy does not apply.
As the project would obtain a Use Permit from Humboldt County for construction and operations to occur in eastern project areas, the project would be required to be consistent with all applicable provisions of both the Eel River Area Local Coastal Plan and the Humboldt County General Plan as a condition of the permit.
The project would obtain any necessary resource agency permits and would avoid and/or compensate for any impacts to wetlands and waters to ensure that no net loss occurs, ensuring adherence to City of Fortuna policies NCR-2.1, NCR-2.10, NCR-2.12, and NCR-2.13. No conflicts with policies or ordinances protecting biological resources have been identified. Therefore, the impact would be less than significant.
f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? (No Impact)
There are no adopted Habitat Conservation, Community Conservation, or approval local, regional, or state habitat conservation plans that apply to the project area. No impact would result.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-21 Cultural Resources
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Cause a substantial adverse change in
the significance of a historical resource
pursuant to §15064.5?
b) Cause a substantial adverse change in
the significance of an archaeological
resource pursuant to §15064.5?
c) Disturb any human remains, including
those interred outside of formal
cemeteries?
a-c) Cause a substantial adverse change in the significance of a historical resource pursuant to §15064.5? Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5? Disturb any human remains, including those interred outside of formal cemeteries? (Less Than Significant with Mitigation Incorporated)
An archeological survey and Historic Property Identification Report (HPIR) was completed during December 2019 and provided to the City. (DZC 2019). As part of the HPIR, project notification letters, separate from AB 52 notification letters, were sent to area tribes on December 4, 2019.
Follow up correspondence between the cultural resource investigator DZC Archaeology & Cultural Resource Management and tribal representatives directly informed mitigation measures included below (DZC 2019).
One previously recorded historical resource, as defined in § 15064.5, is reported as located within or immediately adjacent to the project APE. The historical resource is the ethnographic Wiyot village of kwigërgoyok. This resource is eligible for listing on the California Register of Historic Resources (DZC 2019). Although the area is subject to periodic river flooding and surficial remains of the resource were not located, there is a potential for discovery of the site during project activities and a subsequent potential to cause a substantial adverse change in the significance of a historical resource pursuant to § 15064.5. The impact is considered significant.
In conjunction with the archeological survey and report, the local Tribal Historic Preservation Officers (THPOs) and NAHC were consulted. No Sacred Lands were identified within the APE, and no human remains are known to exist within the project site. However, there is potential for earthwork and grading to result in the disturbance of previously undiscovered archaeological resources or previously unrecorded human remains, if present. Therefore, the impact is considered potentially significant.
No other listed historical resources are present within the project area, and the existing WWTP would not meet any of the context types required for establishment of historic significance.
Mitigation
Implementation of Mitigation Measures CUL-1 and CUL-2 would reduce the potential impact to archaeological resources or human remains by requiring construction worker training, construction monitoring, and procedures that shall be taken in the event of inadvertent discovery.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-22 Mitigation Measure (CUL-1): Protect Archaeological or Tribal Cultural Resources during Construction
Prior to the ground-disturbing construction activities (on the first day of work), construction personnel shall receive Cultural Resources Awareness Training to ensure that construction activities are conducted in a manner that is protective of known and unknown cultural resources. The training shall include information on the location and lateral extent of potential nearby cultural resources sites, avoidance of those areas, laws protecting such resources, and procedures for responding to inadvertent discovery situations. Avoidance of known cultural resources sites shall be determined by a professional archaeologist or Native American monitor and include establishing a nodisturbance buffer zone around known resources.
Initial ground-disturbing activities near the previously recorded on-site historical resource shall be monitored by a professional archaeologist. If archaeological remains or potential tribal cultural resources are encountered during initial-ground disturbing activities, all work shall halt within a 50-foot radius of a discovery. Construction personnel shall not collect cultural materials. A qualified professional archaeologist shall be retained to evaluate the find, and the appropriate tribal representative(s) shall be notified. If the find qualifies as a historical resource or unique archaeological resource as defined by CEQA, the archaeologist shall develop appropriate measures to protect the integrity of the resource and ensure that no additional resources are affected. If the find qualifies as a tribal cultural resource as defined by CEQA, the City shall ensure that appropriate actions to protect the resource are taken and that no additional resources are affected.
Mitigation Measure (CUL-2): Minimize Impacts to Unknown Archaeological Resources or Human Remains if Encountered
In the event that any subsurface archaeological features or deposits, including locally darkened midden soil, are discovered during construction-related earth-moving activities, all ground-disturbing activity in the vicinity of the resource shall be halted, a qualified professional archaeologist shall be retained to evaluate the find, and the appropriate tribal representative(s) shall be notified. If the find qualifies as a historical resource or unique archaeological resource as defined by CEQA, the archaeologist shall develop appropriate measures to protect the integrity of the resource and ensure that no additional resources are affected.
If human remains, associated grave goods, or items of cultural patrimony are encountered during construction, work shall halt in the vicinity of the find and the County Coroner shall be notified immediately. The following procedures shall be followed as required by Public Resources Code § 5097.9 and Health and Safety Code § 7050.5. If the human remains are determined to be of Native American origin, the Coroner shall notify the Native American Heritage Commission within 24 hours of the determination.
The Native American Heritage Commission shall then notify the Most Likely Descendant (MLD), who has 48 hours to make recommendations to the landowner for the disposition of the remains. A qualified archaeologist, the City and the MLD shall make all reasonable efforts to develop an agreement for the treatment, with appropriate dignity, of any human remains and associated or unassociated funerary objects. The agreement would take into consideration the appropriate excavation, removal, recordation, analysis, custodianship, and final disposition of the human remains and associated or unassociated funerary Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-23 objects.
Implementation of Mitigation Measures CUL-1 and CUL-2 would reduce potential impacts related to inadvertent discovery of cultural resources to be less than significant.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-24 Energy
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Result in potentially significant
environmental impacts due to
wasteful, inefficient, or unnecessary
consumption of energy resources,
during project construction or
operation?
b) Conflict with or obstruct a state or
local plan for renewable energy or
energy efficiency?
a) Result in potentially significant environmental impacts due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation? (Less than Significant)
Temporary energy use in connection with project construction would entail consumption of diesel fuel and gasoline by construction equipment and by the transportation of earth moving equipment, construction materials, supplies, and construction personnel. Given the short construction period and implementation of State regulations regarding vehicle emission and fuels standards, such as the Low Carbon Fuel Standard and anti-idling regulations, energy use related to construction would not be wasteful or inefficient.
Operationally, pumping would be required to convey treated effluent from the WWTP to the subsurface percolation field area generally from May 15 through September 30. Pumping energy demands would be approximately 185,000 kWh per year. The pumps would be high efficiency variable speed pumps, with the pump output adjusted to meet the system requirements. The pump would only be in use when needed; thus no energy would be wasted running the pumps when not needed. The pumps have a design point overall efficiency of approximately 77%. In addition, certain existing WWTP facilities would be taken off-line when the new pump station is used resulting in nominal reduction in energy use for these related facilities. There also would be a small amount of fuel used for maintenance worker trips to the percolation field site. Neither the pumping nor the worker trips would be conducted in a manner that would result in wasteful, inefficient, or unnecessary consumption of energy. Impacts related to energy use during construction and operation of the project would therefore be less than significant. b) Conflict with or obstruct a state or local plan for renewable energy or energy efficiency? (No Impact)
State of California Energy Action Plan
In 2003, the three key energy agencies in California— the California Energy Commission (CEC), the California Power Authority (CPA), and the California Public Utilities Commission (CPUC)— jointly adopted an Energy Action Plan (EAP) that listed goals for California’s energy future and set forth a commitment to achieve these goals through specific actions. In 2005, the CPUC and the CEC jointly prepared the EAP II to identify the further actions necessary to meet California’s future energy needs. To the extent that efficiency, demand response, renewable resources, and distributed generation are unable to satisfy increasing energy and capacity needs, the EAP II Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-25 supports the use of clean and efficient fossil-fired generation. The plan recognizes that concurrent improvements are required to the bulk electricity transmission grid and distribution facility infrastructure to support growing demand centers and the interconnection of new generation, both on the utility and customer side of the meter.
Senate Bill 1389
Senate Bill (SB) 1389, the California Integrated Energy Policy, was adopted in August 2002 and requires the CEC to prepare an Integrated Energy Policy Report (IEPR) for electricity, natural gas, and transportation fuels. The IEPR contains an analysis of the policies and actions that are necessary to ensure that the state has adequate energy resources—including a range of alternative energy resources—to meet its needs. The IEPR also includes recommendations to reduce energy demand and to improve the state‘s energy infrastructure.
City of Fortuna
There are no applicable renewable energy or energy efficiency plans in the City of Fortuna related to infrastructure projects.
Eel River Area Local Coastal Plan
The Eel River Local Coastal Plan does not include applicable policies related to renewable energy or energy efficiency plans.
Humboldt County
The Humboldt County General Plan (Humboldt County 2017) Energy Element includes policies to address energy needs, use, and conservation. The policies do not include anything applicable to the percolation field site and related project areas west of the Eel River.
These plans contain broad policy and regulatory initiatives, which are not always applicable at the project level, particularly with infrastructure projects. They require action at the State and County level. Implementation of the project would not conflict with or obstruct the implementation of any of the policies and actions described above. The project would not conflict with or obstruct a State or local plan for renewable energy or energy efficiency. There would be no impact.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-26 Geology and Soils
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Directly or indirectly cause potential
substantial adverse effects, including
the risk of loss, injury, or death
involving:
i) Rupture of a known earthquake
fault, as delineated on the most
recent Alquist-Priolo Earthquake
Fault Zoning Map issued by the
State Geologist for the area or
based on other substantial
evidence of a known fault? Refer
to Division of Mines and Geology
Special Publication 42?
ii) Strong seismic ground shaking?
iii) Seismic related ground failure,
including liquefaction?
iv) Landslides?
a) Result in substantial soil erosion or the
loss of topsoil?
b) Be located on a geologic unit or soil that
is unstable, or that would become
unstable as a result of the project, and
potentially result in on, or off, site
landslide, lateral spreading, subsidence,
liquefaction or collapse?
c) Be located on expansive soil, as defined
in Table 18-1-B of the Uniform Building
Code (1994), creating substantial direct
or indirect risks to life or property?
d) Have soils incapable of adequately
supporting the use of septic tanks or
alternative wastewater disposal systems
where sewers are not available for the
disposal of wastewater?
e) Directly or indirectly destroy a unique
paleontological resource or site or
unique geologic feature?
The project is located on generally flat and gently sloping Eel River valley. Soils at the WWTP have been previously disturbed and compacted during initial WWTP construction and subsequent improvements. Soils in project areas west of the Eel River have experienced less disturbance and development.
The overall site for the new percolation field is comprised of 60 acres that are generally located along the Eel River. Soils within the proposed site are primarily classified as Water and Fluvents, which is reflective of the historical movement of the Eel River in the area. Slopes range from 0 to 2 Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-27 percent. The western and southern portions of the site are classified as Udifluvents a, i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. (No Impact)
The project site is not located within an active Alquist-Priolo fault mapped by the California Geological Survey (DOC 2019b). The project would have no impact with regard to the rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map. The nearest fault zone is the Hydesville Fault Zone, including the Little Salmon fault, approximately 2 miles east of the project (DOC 2019b). Additionally, the project does not include structures designed for human occupancy. No impact related to fault rupture would result. a, ii) Strong seismic ground shaking? (Less Than Significant) The project is situated within a seismically active area close to several seismic sources capable of generating moderate to strong ground motions. Because the project is located within a seismically active area, the probability that strong ground shaking associated with large magnitude earthquakes would occur during the design life of the underground pipeline is high. Thus, the pipeline would be designed to resist moderate to very strong levels of seismic ground shaking without experiencing structure damage, consistent with recommendation from the geotechnical investigation (see Environmental Protection Action 1).
Project implementation would not increase risk of strong seismic ground shaking or exposure to strong seismic ground shaking above existing conditions. If strong seismic ground shaking were to damage the proposed facilities, it is unlikely that human lives would be put at risk because the project does not involve the construction of habitable structures. The project would be constructed to the seismic standards of the most recent California Building Code, as applicable. Therefore, the impact to people and structures from strong seismic ground shaking would be less than significant. a.iii, a.iv, c) Liquefaction, landslides, or otherwise unstable soils? (No Impact) The project is located in a mapped liquefaction hazard zone (Humboldt PBD 2015). Liquefaction is a phenomenon involving loss of soil strength, and resulting in fluid mobility through the soil.
Liquefaction typically occurs when loose, uniformly-sized, saturated sands or silts are subjected to repeated shaking in areas where the groundwater is less than 50 feet below ground surface. In addition to the necessary soil and groundwater conditions, the ground acceleration must be high enough, and the duration of the shaking must be sufficient, for liquefaction to occur.
The potential for liquefaction-related settlement exists at the project site. Earthquake-related liquefaction could result in sand boils and minor differential settlement on the site; however, lateral spreading due to liquefaction is not anticipated to affect the project site given that there are no free facies of significance nearby. Project implementation would not increase risk of liquefaction or exposure to liquefaction above existing conditions and no impact would occur.
The project area is generally flat and gently sloping, located in the Eel River valley. Steep slopes and hillslopes are not present within the project area. Thus, landslides within or near the project are unlikely to occur, and the potential for landslide occurrence is not increased by the project.
In addition, the City shall implement Environmental Protection Action 1 – Implement Geotechnical Design Recommendations, which would further address the seismic and foundation design criteria and determine the appropriate method of directional drilling under the Eel River. No impact would result.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-28 b) Result in substantial soil erosion or the loss of topsoil? (Less Than Significant Impact)
Construction activities, including cut, fill, removal of vegetation, directional drilling, and operation of heavy machinery will disturb soil and, therefore, have the potential to cause erosion. Erosion and sediment control provisions prescribed in the Fortuna Municipal Code, Humboldt County Code, NCRWQCB regulations, and the California Building Code (CBC) would be required as part of the project. BMPs may include: silt fences, straw wattles, soil stabilization controls, site watering for controlling dust, and sediment detention basins. Environmental Protection Action 2 requires development and implementation of a SWPPP in accordance with the State General Construction Permit. These mandatory ordinance requirements and permits are designed to maintain potential water quality impacts at a less than significant level during and post construction. Therefore, the potential soil erosion impact would be less than significant. d) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? (No Impact)
The purpose of the project is to develop an alternative wastewater disposal system for the City. The percolation field was identified during feasibility investigations as a desirable location for effluent disposal based on the presence of soils suitable for infiltration and soil digestion of wastewater (GHD 2019b). The project does not include the use of septic tanks or other alternative wastewater disposal systems. No impact would result.
e) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? (Less Than Significant with Mitigation) Paleontological resources are the remains or traces of prehistoric animals and plants. Paleontological resources, which include fossil remains and geologic sites with fossil-bearing strata are nonrenewable and scarce and are a sensitive resource afforded protection under environmental legislation in California. Under California PRC § 5097.5, unauthorized disturbance or removal of a fossil locality or remains on public land is a misdemeanor. State law also requires reasonable mitigation of adverse environmental impacts that result from development of public land and affect paleontological resources (PRC § 30244).
It is unlikely that project construction will impact potentially significant paleontological resources because most of the project occurs in relatively newly deposited alluvium. However, the possibility of encountering a paleontological resource during construction cannot be completely discounted, therefore, the impact related to the potential disturbance or damage of previously undiscovered paleontological resources, if present, is considered potentially significant.
Mitigation
Mitigation Measure GEO-1 would reduce the impact of construction activities on potentially unknown paleontological resources to a less-than-significant level by addressing discovery of unanticipated buried resources and preserving and/or recording those resources consistent with appropriate laws and requirements.
Mitigation Measure GEO-1: Inadvertent Discovery of Paleontological Resources
In the event that fossils are encountered during construction (i.e., bones, teeth, or unusually abundant and well-preserved invertebrates or plants), construction activities shall be diverted away from the discovery within 50 feet of the find, and a professional Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-29 palaeontologist shall be notified to document the discovery as needed, to evaluate the potential resource, and to assess the nature and importance of the find. Based on the scientific value or uniqueness of the find, the palaeontologist may record the find and allow work to continue, or recommend salvage and recovery of the material, if it is determined that the find cannot be avoided. The palaeontologist shall make recommendations for any necessary treatment that is consistent with currently accepted scientific practices. Any fossils collected from the area shall then be deposited in an accredited and permanent scientific institution where they will be properly curated and preserved.
Implementation of Mitigation Measure GEO-1 would reduce this impact to a less-than-significant level for both construction and operation because a plan to address discovery of unanticipated paleontological resources and to preserve and/or record those resources consistent with appropriate laws and requirements would be implemented.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-30 Greenhouse Gas Emissions
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Generate greenhouse gas emissions,
either directly or indirectly, that may
have a significant impact on the
environment?
b) Conflict with an applicable plan, policy or
regulation adopted for the purpose of
reducing the emissions of greenhouse
gases?
The NCUAQMD has not adopted regulations regarding the evaluation of greenhouse gas (GHG) emissions in a CEQA document, and has not established CEQA significance criteria to determine the significance of impacts with regard to GHGs. The NCUAQMD recommends considering the GHG emission CEQA standards from the Bay Area Air Quality Management District (BAAQMD).
Pacific Gas & Electric provides energy to the WWTP.
a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? (Less than Significant) As provided by the BAAQMD’s CEQA Air Quality Guidelines, if a project meets the screening criteria for a Land Use Type, and the analysis is consistent with the methodology used to develop the screening criteria, then a project’s operational greenhouse gas impact for that Land Use Type may be considered less than significant. However, there is no Land Use Type applicable to a wastewater treatment facility, and Land Use Types related to industrial facilities assume large buildings would be constructed. Therefore, the following analysis quantifies greenhouse gas emissions from operation and compares it to the 1,100 MTCO2e per year threshold established by the BAAQMD.
For project construction, BAAQMD does not have quantitative GHG emission thresholds (BAAQMD 2017). Rather, the BAAQMD states that a lead agency should disclose GHG emission information and make a determination on the significance in relation to meeting AB 32 GHG reduction goals.
Project operation would result in greenhouse gas emissions from operation of the new pump station and one vehicle maintenance trip per week. The new pump station would require approximately 185,000 kWh of electricity each year, resulting in approximately 44 MTCO2e per year. Note, however, certain existing facilities would be taken off-line after construction of the new pump station. This would result in a smaller increase in greenhouse gas emissions, over existing conditions, than shown in Appendix A. As 44 MTCO2e is below the 1,100 MTCO2e threshold, the operational impact to greenhouse gas emissions from project operation would be less than significant.
Project construction activities would result in a temporary increase in greenhouse gas emissions, including exhaust emissions from on-road haul trucks, worker commute vehicles, and off-road heavy-duty equipment. Construction emissions were estimated using CalEEMod version 2016 (Appendix A). 3.2, and are estimated to be approximately 41.22 MTCO2e from all construction activities over the 8-month construction period. The project’s construction emissions equal 1.37 MTCO2e per year when annualized over the assumed 30-year lifespan of the project.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-31 Emissions during construction would not be a considerable contribution to the cumulative greenhouse gas impact, given that construction would be temporary, of short duration, and would not require a large fleet of earthmoving equipment and soil-off hauling beyond the normal equipment and activities related to such utility or infrastructure projects. Therefore, the project’s construction-related emissions would be less than significant. b) Conflict with an applicable plan, policy, or regulation adopted for the purpose of reducing the emissions of greenhouse gases? (Less than Significant) In 2008, the California Air Resources Board adopted the Climate Scoping Plan, which outlined measures to attain emissions standards pursuant to AB 32. The most recent update to the Scoping Plan was completed in December 2017. Although the Scoping Plan identifies strategies to meet statewide emissions reductions targets, it does not contain recommended reduction levels or percentages for local government’s municipal operations.
On a local level, Humboldt County’s 2012 Draft Climate Action Plan, which has yet to be adopted, also outlines targets consistent with AB 32. In addition, the NCUAQMD has not developed CEQA guidelines or significance thresholds for use in GHG analyses. Therefore, for the purpose of this analysis, the 2017 Scoping Plan was used as the evaluation criteria. If the project were to conflict with the 2017 Scoping Plan, then the project would have a significant impact.
The recommended measures in the 2017 Scoping Plan are broad policy and regulatory initiatives that would be implemented at the State level and do not relate to the construction and operation of individual infrastructure projects, such as the Wastewater Treatment and disposal System Upgrade Project. Although project construction may benefit (have a reduced generation of GHG) from implementation of some of the State-level regulations and policies related to fuel and vehicle efficiencies, the project would not impede the State in meeting the AB 32 greenhouse gas reduction goals. Therefore, impacts from the project’s construction and operational emissions would be less than significant.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-32 Hazards and Hazardous Materials
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
f) Create a significant hazard to the
public or the environment through
the routine transport, use, or disposal
of hazardous materials?
g) Create a significant hazard to the
public or the environment through
reasonably foreseeable upset and
accident conditions involving the
release of hazardous materials into
the environment?
h) Emit hazardous emissions or handle
hazardous or acutely hazardous
materials, substances, or waste
within one-quarter mile of an existing
or proposed school?
i) Be located on a site which is
included on a list of hazardous
materials sites compiled pursuant to
Government Code § 65962.5 and, as
a result, would it create a significant
hazard to the public or the
environment?
j) For a project located within an airport
land use plan or, where such a plan
has not been adopted, within two
miles of a public airport or public use
airport, would the project result in a
safety hazard or excessive noise for
people residing or working in the
project area?
k) Impair implementation of or
physically interfere with an adopted
emergency response plan or
emergency evacuation plan?
l) Expose people or structures, either
directly or indirectly, to a significant
risk of loss, injury or death involving
wildland fires?
This section evaluates the potential impacts related to hazards and hazardous materials during construction and operation of the project.
a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? (Less Than Significant Impact) Construction of the project would include the transport and use of common hazardous materials inherent to the construction process, including petroleum products for construction equipment and vehicles, paints, concrete curing compounds, and solvents for construction of project Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-33 improvements. These materials are commonly used during construction, are not acutely hazardous, and would be used in relatively small quantities.
Caltrans and the California Highway Patrol (CHP) regulate the transportation of hazardous materials and wastes, including container types and packaging requirements, as well as licensing and training for truck operators, chemical handlers, and hazardous waste haulers. The California Division of Occupational Safety and Health (Cal-OSHA) also enforces hazard communication program regulations which contain worker safety training and hazard information requirements, such as procedures for identifying and labeling hazardous substances, communicating hazard information related to hazardous substances and their handling, and preparation of health and safety plans to protect workers and employees.
Project construction would be required to implement storm water best management practices during construction in accordance with the State Water Resources Control Board General Construction Storm Water Permit. Best management practices addressing materials management would be required, including proper material delivery and storage, spill prevention and control, and management of concrete and other wastes.
Because the City and its contractors would be required to comply with existing and future hazardous materials laws and regulations and applicable best management practices addressing the transport, storage, use, and disposal of hazardous materials, the potential to create a significant hazard to the public or the environment during construction of the project would be less than significant.
Following construction, operation of the project would not result in the need for new hazardous materials that would need to be transported, used, or disposed. No operational impact would occur. b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?? (Less Than Significant Impact) The project would utilize heavy machinery to perform some construction-related tasks including grading, drilling, excavation, and transportation of materials. There is always the possibility when equipment is operating that an accident could occur and fuel could be released onto the soil.
Equipment on site during construction would be required to have emergency spill cleanup kits immediately accessible in the case of any fuel or oil spills. Equipment would not be refueled near the Eel River or any perennial wetland. If equipment must be washed, it would be washed off-site.
The potential impact would be less than significant.
c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? (Less Than Significant Impact)
The southern edge of the Fortuna Middle School track facility is located approximately 0.2 miles north of the WWTP parking lot. Construction activities are assumed to include the use of hazardous materials such as fuels, lubricants, degreasers, paints, and solvents. These materials are commonly used during construction, are not acutely hazardous, and would be used in small quantities. Numerous laws and regulations ensure the safe transportation, use, storage, and disposal of hazardous materials (see Impact discussion in Section 3.9 (a) and (b) above). Although construction activities could result in the inadvertent release of small quantities of hazardous substances, a spill or release at a construction area is not expected to endanger individuals at nearby schools given the nature of the materials, the small quantities that would be used, and the distance of the schools from the project area. Therefore, because the City and its contractors would Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-34 be required to comply with existing and future hazardous materials laws and regulations covering the transport, use, and disposal of hazardous materials, and because of the nature and quantity of the hazardous materials to be potentially used by the project, the impact related to the use of hazardous materials during construction adjacent to the school would be less than significant.
Project operations would have no impact on Fortuna Middle School or any other school. d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code § 65962.5 and, as a result, would it create a significant hazard to the public or the environment? (Less Than Significant Impact) The project is not located on or near a cleanup site listed in the California Department of Toxic Substances Control EnviroStor database (DTSC 2019). The project is not located on a cleanup site, as mapped in the GeoTracker database (State Water Resources Control Board 2019). A closed Leaking Underground Storage Tank (LUST) clean up site (Mercer Fraser Yard,T0602300101 is located adjacent to the WWTP at 81 Sandie Prairie Road. A second closed LUST clean up site is located due north of the WWTP (City of Fortuna Corporation Yard, T0602300177) at 190 Dinsmore Drive. Off-site construction activities are not planned, and impacts related to these two off-site closed clean up sites would not occur. The WWTP at 180 Dinsmore Drive, Fortuna, CA is listed on the Cortese List. The description of the violation requests repair or schedule of a new chlorine contact chamber. The chlorine contact chamber was replaced several years ago; thus it is believed this listing is outdated and no hazard remains as a result. The potential impact associated with hazardous materials sites would be less than significant. e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area? (No Impact)
The nearest airport is the Rohnerville Airport, which is located more than two miles from the project area. There would be no impact.
f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? (No Impact) The City does not have an independent emergency response plan. However, the City does have hazardous material response plans associated with the regulatory requirements for their wastewater treatment, water treatment plant facilities and operations, and an emergency response plan that establishes chain-of-command and response procedures between the emergency services, public works, City staff and board, and other essential departments and outside organizations. The proposed project does not conflict with these plans.
The Humboldt County Emergency Operations Plan (Humboldt County 2015) does not designate specific evacuation routes or emergency shelter locations, or include policies or procedures with which the project would conflict. Therefore, the project would not impair implementation of or physically interfere with the plan. Additionally, the project would not increase public use, significantly increase risk of hazard occurrence, or construct facilities that may post a hazard to people or the environment. No impact would occur.
g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? (Less Than Significant Impact) The California Department of Forestry and Fire Protection (CAL FIRE) is required by law to map areas of significant fire hazards based on fuels, terrain, weather, and other relevant factors. These Fire Hazard Severity Zones (FHSZ) influence how people construct buildings and protect property Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-35 to reduce risk associated with wildland fires. The project site is primarily located in a local responsibility area (LRA) meaning an area where local governments have financial responsibility for wildland fire protection (Humboldt County 2019). Project areas located east of the Eel River are within the Fortuna Fire Protection District. Project areas located west of the Eel River are within the Ferndale Fire Protection District.
The project and surrounding vicinity is located in a moderate hazard severity zone, which is the lowest risk of all mapped categories (Humboldt County 2019). It is possible fire ignition could occur during construction (e.g. related to heavy machinery usage). The project would not otherwise increase exposure to wildlife fire above existing conditions. The impact would be less than significant.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-36 Hydrology and Water Quality
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Violate any water quality standards or
waste discharge requirements or
otherwise substantially degrade surface
or ground water quality?
b) Substantially decrease groundwater
supplies or interfere substantially with
groundwater recharge such that the
project may impede sustainable
groundwater management of the basin?
c) Substantially alter the existing drainage
pattern of the site or area, including
through the alteration of the course of a
stream or river or through the addition of
impervious surfaces, in a manner which
would:
i) Result in substantial erosion or
siltation on- or off-site?
ii) Substantially increase the rate or
amount of surface runoff in a
manner which would result in
flooding on- or off-site?
iii) Create or contribute runoff water
which would exceed the capacity of
existing or planned stormwater
drainage systems or provide
substantial additional sources of
polluted runoff?
iv) Impede or redirect flood flows?
d) In flood hazard, tsunami, or seiche
zones, risk release of pollutants due to
project inundation?
e) Conflict with or obstruct implementation
of a water quality control plan or
sustainable groundwater management
plan?
The project is near Strongs Creek and the Eel River. In-water work would not occur; however, directional drilling would occur beneath the Eel River and Strongs Creek. a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? (Less Than Significant with Mitigation)
If potential impacts to Waters or wetlands would occur, the project would be required to obtain and comply with necessary permits requirements required by Section 401 and Section 404 of the Clean Water Act and administered by NCRWQCB and USACE, respectively, acting to prevent or Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-37 essentially reduce the potential for the project and operations to violate any water quality standards or waste discharge requirements.
The greatest potential project impacts to water quality would result from sediment mobilization during construction and operations or a frac-out during horizontal drilling. Construction and operation activities such as site clearing, grading, excavation, and material stockpiling could leave soils exposed to rain or surface water runoff that may carry soil contaminants (e.g., nutrients or other pollutants) into wetlands and/or waterways near the site, degrade water quality, and potentially violate water quality standards for specific chemicals, dissolved oxygen, suspended sediment, or nutrients. This impact would be potentially significant. Directional drilling has the potential to release drilling fluids into the surface environment through frac-outs. A frac-out is a condition where drilling mud is released through fractured soils and bedrock into the surrounding rock and sand, which travels to the surface. This impact would also be potentially significant.
SWRCB Order No. 2009-0009 applies to public and private construction projects that include one or more acres of soil disturbance. Because the proposed project is anticipated to disturb over one (1) acre of land, compliance with Order No. 2009-0009 would be required. Therefore, if construction and operation activities associated with the project are not properly managed, applicable water quality standards and waste discharge requirements could be violated.
As described in Environmental Protection Action 2, the project and operations would obtain coverage under State Water Resources Control Board Order No. 2009-0009-DWQ, Waste Discharge Requirements for Discharges of Storm Water Runoff Associated with Construction and Land Disturbance Activities, as amended by Order No. 2012-0006. In compliance with the NPDES requirements, a Notice of Intent (NOI) would be prepared and submitted to the NCRWQCB, providing notification and intent to comply with the State of California Construction General Permit.
In addition, a Construction SWPPP would be prepared for pollution prevention and control prior to initiating site construction activities. The Construction SWPPP would identify and specify the use of erosion sediment control BMPs for control of pollutants in stormwater runoff during construction related activities, and would be designed to address water erosion control, sediment control, off-site tracking control, wind erosion control, non-stormwater management control, and waste management and materials pollution control. A sampling and monitoring program would be included in the Construction SWPPP that meets the requirements of the NCRWQCB to ensure the BMPs are effective. A Qualified SWPPP Practitioner would oversee implementation of the SWPPP, including visual inspections, sampling and analysis, and ensuring overall compliance.
Additionally, water sourced from dewatering activities would be pumped into Baker tanks (or similar) or dewatering bags and used for dust control purposes, consistent with Mitigation Measure AIR-1. Water sourced from dewatering would not be illegally discharged to wetlands or cause polluted runoff.
Mitigation
The potential impact to water quality standards would be less than significant with the incorporation of Mitigation Measure HWQ-1 and HWQ-2 protecting against water quality impacts related to sedimentation, erosion, hazardous materials, or a frac-out.
Mitigation Measure HWQ-1: Implement Best Management Practices to Protect Water Quality
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-38 The following representative Best Management Practices will be implemented to protect water quality during construction to avoid impacts to water quality:
• All contractors that would be performing demolition, construction, grading, operations or other work that could cause increased water pollution conditions at the site (e.g., dispersal of soils) shall receive training regarding the environmental sensitivity of the site and need to minimize impacts. Contractors also shall be trained in implementation of stormwater BMPs for protection of water quality. • The Contractor will implement BMPs during construction including the following BMPs from the current California Stormwater BMP Handbook for Construction:
EC-1: Scheduling; EC-2: Preservation of Existing Vegetation; NS-2: Dewatering Operations; NS-9: Vehicle Equipment and Fueling; NS-10: Vehicle & Equipment Maintenance; WM-2: Material Use; and WM-4: Spill Prevention and Control; • Contractors will be responsible for minimizing erosion and preventing the transport of sediment to sensitive areas;
• Sufficient erosion control supplies will be maintained on site at all times, available for prompt use in areas susceptible to erosion during rain events; • Disturbance of existing vegetation will be minimized to only that necessary to complete the work;
• The contractor will make adequate preparations, including training and providing equipment, to contain oil and/or other hazardous materials spills; • Dewatering operations will be conducted where needed from the work location and stored or disposed of appropriately;
• Vehicle and equipment maintenance should be performed off-site whenever practical;
• Contractor shall ensure that the site is prepared with BMPs prior to the onset of any storm predicted to receive 0.5 inches or more of rain over 24 hours; and • All erosion and sediment control measures shall be maintained in accordance to their respective BMP fact sheet until disturbed areas are stabilized; Mitigation Measure HWQ-2: Development of a Horizontal Directional Drilling Hydrofracture Contingency Plan
To avoid potential impacts related to a frac-out, a Horizontal Directional Drilling Hydrofracture Contingency Plan for horizontal directional drilling pipeline under the Eel River and Strongs Creek shall be in place prior to construction. The Plan shall include an anticipated drilling mud design that provides engineering properties and the anticipated fluid pressure required as the pilot hole is incrementally advanced in approximately 10- meter (30-foot) increments. The contractor shall be required to monitor and record the Driller’s Mud composition, drill fluid pressure and volumes, and have an inadvertent return contingency plan and associated equipment to minimize impacts. The Driller’s Mud, spoils, water, and all other waste materials are to be legally disposed with weight or volume tickets confirming legal disposal. The Plan shall include: visual monitoring, monitoring pressures and volumes, observation during drilling, standards and specification for a four-hour shutdown minimum if frac-out occurs to allow ground to heal, cleanup plan, frac-out tank or vac truck (placed in strategic locations), and roles and responsibilities in the event of a frac-out event.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-39 Implementation of Mitigation Measure HWQ-1 and HWQ-2 would mitigate potential impacts related to water quality standards and waste discharge requirements to a less-than-significant level by appropriately managing construction dewatering and implementing erosion control measures near streams and other wetted waters of the U.S. or State and developing a contingency plan to avoid environmental impacts resulting from a frac-out during direction drilling.
b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? (Less Than Significant)
The project would not increase impervious surface to limit recharge and would not pump or utilize groundwater resources. Similarly, the project would not decrease groundwater supplies or interfere with groundwater management. During construction, isolated and short-duration groundwater dewatering may occur as needed. Dewatering would be small in scale and limited to shallow groundwater only. The impact would be less than significant. c, i) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would result in substantial erosion or siltation on- or off-site? (Less Than Significant Impact)
The drainage pattern of the eastern project area at the WWTP is limited to unpaved gravel stockpiling areas and the developed WWTP facility. Project elements would not result in significant alteration of the existing drainage pattern of the site, and the WWTP does not include a stream or watercourse. Cessation of use of the percolation ponds during low flow periods would serve to hydrological disconnect WWTP operations from the Eel River, reducing the associated risk to water quality, unrelated to erosion and siltation. The potential impact at the WWTP facility would be less than significant.
Potential development of a contingency mid-point drill pit would not alter the drainage pattern of the Eel River, even locally. Project construction to occur at the western percolation field would also not alter the drainage pattern of the project area, including areas of temporary staging and permanent access. Planned grading would not significantly alter slope or drainage and would be entirely pervious. Implementation of Mitigation Measure HWQ-1 and Mitigation Measure HWQ-2 would further serve to avoid potential water quality impacts associated with erosion or siltation during construction. The potential impact would be less than significant. c, ii) Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site? (No Impact)
The project would not increase impervious surfaces or substantially alter topography, slope, or drainage to or near the Eel River, Strongs Creek, or any other tributary. Both on-site and off-site flooding would remain unaffected. No impact would result. c, iii) Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff? (Less Than Significant)
The project does not involve paving and would not increase the area of impervious surface. The project also does not include elements that would increase stormwater drainage or necessitate significant design features to accommodate stormwater management. Additionally, in compliance with Environmental Protection Action 2, the project would develop a SWPPP to be approved by the NCRWCB, and the project would be designed to meet NCRQWB storm water requirements. The Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-40 project would not cause on- or off-site flooding. The impact would be less than significant c, iv) Impede or redirect flood flows? (Less Than Significant) The project is located entirely within the FEMA 100-year flood zone of the Eel River and Strongs Creek (Humboldt County 2019). However, all project elements located in the western percolation field would be located at or below grade and would not impede or redirect flood flows. Existing topography would not be significantly altered in such a manner as to redirect flood flows. Similarly, the underground pipe connecting the WWTP to the percolation field on the opposite bank of the Eel River would also not impede or redirect flood flows because it would be below ground surface.
Treatment upgrades at the WWTP would not increase the footprint or structure height (e.g. facility buildings) of the overall WWTP facility and associated infrastructure beyond existing conditions.
The potential impact would be less than significant.
d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? (Less Than Significant)
The project site is not located near a larger isolated body of water that may be affected by a seiche.
A portion of the WWTP nearest the Eel River is located within a Tsunami Evacuation Area. The entire project is also located within the FEMA 100-year flood zone.
If a tsunami occurred during construction, pollutants from heavy machinery (e.g. diesel) could be released into the environment. In the event of tsunami that was severe enough to extend to the eastern edge of the Tsunami Evacuation Area, the cumulative environmental and human impact would be catastrophic and the impact directly attributable to the proposed project would be insubstantial by comparison. Project construction would not occur during winter months when floods are known to occur. The impact associated with project construction would be less than significant.
Operationally, chemicals or other hazardous materials would not be present or in use at the western percolation facility. Aside from the optional use of aluminum-based metal coagulants to support potential UV disinfection and supplemental carbon for the nitrification reaction, no new chemicals will be used as a result of the project. In the event of a very significant flood that might inundate or wash away WWTP infrastructure, these constituents and wastewater effluent could be released into the Eel River. The flood magnitude associated with such an event would be both uncommon and significant. Inadvertent release of any constituents present at the WWTP would quickly dilute within the Eel River floodwaters. The potential impact of pollutants to water quality due to project inundation would be less than significant. e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? (No Impact)
The relevant water quality control plan is the NCRWQCB Basin Plan, which establishes thresholds for key water resource protection objectives for both surface waters and groundwater. The project shall obtain coverage under State Water Resources Control Board Order No. 2009-0009-DWQ, Waste Discharge Requirements for Discharges of Storm Water Runoff Associated with Construction and Land Disturbance Activities, which would include a SWPPP. If impacts to Waters or wetlands would occur, the project shall also obtain a NCRWCB Clean Water Act Section 401 Water Quality Certification. These regulatory requirements and associated requisite monitoring would ensure a conflict with the Basin Plan does not occur. Additionally, by removing the hydrologic interaction between the existing percolation ponds at the WWTP, the Eel River, and groundwater table, the project would benefit management of groundwater as described in the Basin Plan, resulting in an improvement. No impact would result.
we are fully
contained by a
berm at the BFE at
the WWTP itself
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-41 Land Use and Planning
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Physically divide an established
community?
b) Cause a significant environmental
impact due to a conflict with any land
use plan, policy, or regulation adopted
for the purpose of avoiding or mitigating
an environmental effect?
This section evaluates the potential impacts related to land use, as it applies to construction and operation of the project.
a) Physically divide an established community? (No Impact) The project would not physically divide a community. The WWTP project area is occupied by an existing facility whose project related improvements would be constructed entirely within the existing boundaries of the WWTP. The surrounding land uses are commercial or industrial in nature, with no residential uses present. Access to the site and surrounding properties is provided exclusively by Dinsmore Drive, a frontage road along Highway 101. There are no multi-use trails in the immediate project facility, though the northernmost extent of the River Walk Trail lies approximately 1,000 feet south of the project. Because the project does not result in modification of roadway or trail configuration, it does not create a physical barrier to the movement of people or motor vehicles.
The western project area at and near the percolation field consists of open space surrounded by forest and agricultural uses. There are no residential or commercial uses in the vicinity. The project would result in a minor extension and improvement of the existing farm road. No roads or formally designated trails would be closed or realigned as a result of this project. Existing off-road vehicle tracks appear unplanned and unmaintained. There are no formally designated multi-use trails in the vicinity of the western project area. For the reasons stated above, the proposed project would not divide an established community. There would be no impact. b) Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect? (No Impact)
The project is consistent with the City of Fortuna and Humboldt County land use and zoning designations. The eastern project area (Fortuna jurisdiction) is zoned Public Facilities (PF) and has a land use designation of Public (PUB). “Sewage treatment plant” is a conditionally permitted use in the Public Facilities (PF) zone district. The Public Facilities (PF) zone district is consistent with and implements the Public (PUB) land use designation, as sourced from the Fortuna General Plan.
The western project area that would contain the leach field (County of Humboldt jurisdiction) is zoned Agriculture Exclusive, Archeological Resource Area, Streams and Riparian Corridors Protection, Transitional Agricultural Lands (AE-60/A, F, R, T) with a land use designation of AE (Agriculture Exclusive). “Solid Waste Disposal” is a conditionally permitted use in the Agriculture Exclusive zone district. The Agriculture Exclusive zone district is consistent with and implements the Agriculture Exclusive land use designation, as source from the County of Humboldt General Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-42 Plan.
The contingency directional mid drilling point located on the Eel River floodplain (County of Humboldt jurisdiction) is zoned Natural Resources, Streams and Riparian Corridors protection (NR/R) with a land use designation of NR. “Civic Use Types” such as oil and gas pipelines are a conditionally permitted use in the Natural Resource zone. While not specifically listed, the proposed project is sufficiently similar and compatible to the uses permitted in the Natural Resource zone.
The Natural Resource zone district is consistent with and implements the Natural Resource land use designation, as sourced from the County of Humboldt General Plan. For the reasons stated above, the proposed project would not conflict with any land use plan, policy, or regulation.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-43 Mineral Resources
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
f) Result in the loss of availability of a
known mineral resource that would be
of value to the region and the residents
of the state?
g) Result in the loss of availability of a
locally-important mineral resource
recovery site delineated on a local
general plan, specific plan or other land
use plan?
This section evaluates the potential impacts related to mineral resources associated with the project. Aside from the gravel located on the Eel River floodplain, there are no additional mineral resources in the project area.
a, b) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state, or a locally-important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan? (No Impact)
Construction of the proposed project would not result in the loss of mineral resources. Aside from the floodplain gravel, there are no mineral resources found within the project area. Floodplain gravel would not be harvested, removed, or permanently disturbed as a result of project actions. The project does not require a substantial amount of any mineral resource for construction, although some mineral resources (primarily aggregate and rock) would be needed for construction. Therefore, no impact would occur.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-44 Noise
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Result in generation of a
substantial temporary or
permanent increase in
ambient noise levels in the
vicinity of the project in
excess of standards
established in the local
general plan or noise
ordinance, or applicable
standards of other agencies?
b) Result in generation of
excessive groundborne
vibration or noise levels?
c) For a project located within
the vicinity of a private airstrip
or an airport land use plan or,
where such a plan has not
been adopted, within two
miles of a public airport or
public use airport, would the
project expose people
residing or working in the
project area to excessive
noise levels?
Current noise conditions on the eastern project area consist of noise associated with the operation of the Fortuna WWTP e.g. mechanical equipment, motors and truck traffic. Background noise is generated by vehicles on Highway 101, Dinsmore Drive, emergency response sirens related to the nearby fire station, and the industrial facilities (aggregate production) located to the north and south of the project area. Current conditions on the western edge of the project are typical of forest and agricultural land, which typically experience minimal noise except that created by agricultural vehicles such as tractors on nearby fields.
a) Result in generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? (Less Than Significant Impact)
Construction of the proposed project would temporarily increase noise in the immediate vicinity of the project site. The temporary noise increases would result from use of construction equipment for the project, as well as from increased traffic as construction workers commute to and from the project site. To prevent noise disturbance to the community, City of Fortuna General Plan Noise Element Policy HS-6 limits construction activity to the hours between 7 a.m. and 8 p.m. Monday through Saturday, except for emergencies or other permitted circumstances.
There are no sensitive noise receptors, such as housing or schools that are located adjacent to the project area. The nearest noise receptor include: 1) the Fortuna Middle School track facility, which is located approximately 0.2 miles north of the WWTP parking lot and 2) residential housing, Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-45 located approximately 0.1 miles north and west of the WWTP parking lot. Both Fortuna Middle School and residential housing are located on the opposite side of Highway 101, which also produces large amounts of highway-related noise. Existing stationary noise sources located near the WWTP, as documented in the City’s General Plan, include: Mercer-Fraser Gravel Operations and the Eel River Disposal Transfer Station. The project would generate temporary noise during construction. Noise levels would be consistent with the reference noise levels in Table 3.13-1 below.
Table 3.13-1: Construction Equipment Reference Noise Levels as Measured at 50’
Equipment
Noise Level
(dB0F
1) Equipment
Noise Level
(dB)
Drill rig truck 84 Jackhammer 85
Horizontal Boring Hydraulic Jack 80 Large Generator 82
Front end loader or Backhoe 80 Paver or Roller 85
Excavator 85 Dump truck 84
Source: Federal Highway Administration, 2006.
Sound from a point source is known to attenuate at a rate of -6 dB for each doubling of distance.
For example, a noise level of 84 dB Leq as measured at 50 feet from the noise source would attenuate to 78 dB Leq at 100 feet from the source and to 72 dB Leq at 200 feet from the source to the receptor. Based on the reference noise levels in Table 3.13-1, the noise levels generated by construction equipment at the project site may reach a maximum of approximately 85 dB Leq at 50 feet during site excavation and construction.
The project is not expected to result in a substantial increase in ambient noise levels on the eastern project area because new pumps would be installed within the existing concrete wet well structure.
The project is not expected to increase ambient noise levels at the western project area (effluent percolation field) because this project component is limited to buried pipes with no associated mechanical equipment. The impact would therefore be less than significant.
Noise Ordinance Compatibility
City Fortuna
The City of Fortuna General Plan designates a daytime exterior maximum noise threshold of 85 dBA Lmax in industrial zoning districts. The project would be fully permitted and would comply with terms of approved permits, including those that specifically address noise limitations. The project would not conflict with the City’s noise policies.
Humboldt County
The Humboldt County’s Noise Compatibility Standards set a construction noise range from a maximum of 65 dB – 85 dB, depending on the land use. However, exceptions include the use of heavy machinery and tools used during construction of permitted structures when conforming to the terms of the approved Use Permit (Humboldt County 2017d). The project would obtain a Use Permit and would comply with terms of the approved permit, including those that specifically address noise limitations. The project would not conflict with Humboldt County’s Noise Element or Noise Compatibility Standards.
1 “dB” is a weighted decibel measurement for assessing hearing risk and, therefore, is used by most regulatory compliance.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-46 Noise and Land Use Compatibility
Construction
The project area consists of two separate sites. The eastern portion consists of the existing WWTP and the western portion consists of the new effluent percolation fields. Both sites would experience temporary increases in noise due to construction activities. However, these would occur during daytime hours only and within the established regulatory limits discussed above, including daytime exterior maximum noise threshold of 85 dBA Lmax for construction at and near the WWTP.
Construction in western project areas (jurisdiction of Humboldt County) are exempt from noise thresholds during construction under the project’s Use Permit. The potential impact would be less than significant.
Operation
After construction, increased operational noise generated by the project on the eastern side of the project area is expected to be minimal to non-existent due the indoor installation of the new pumps and other associated upgrades (converting the aeration basins to Modified Ludzack Ettinger (MLE) process as well as modifying the WAS and EQ basins.) There would be no increase in ambient noise resulting from the new effluent percolation fields because no equipment is being installed that is capable of creating noise. The potential impact would be less than significant. b) Result in generation of excessive groundborne vibration or noise levels? (Less Than Significant Impact)
Earth moving and earth compacting activities using heavy machinery would create groundborne vibrations and noise that may be noticeable on a temporary basis during construction activities at nearby commercial and industrial uses. Noticeable groundborne vibrations and noise would be limited to normal daytime hours. The proposed project would comply with Fortuna General Plan Policy HS-6 and Humboldt County General Plan policy N-IM6, which requires limiting construction activity to specified daytime hours and regulate vibration sources. Additional groundborne vibrations beyond baseline conditions are not anticipated as a result of operational activities, and the potential impact would be less than significant.
c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? (No Impact)
The project is not located within the vicinity of a private airstrip or an airport land use plan, or within two miles of a public airport. There would be no impact. delete sentence in
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Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-47 Population and Housing
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Induce substantial unplanned
population growth in an area,
either directly (for example, by
proposing new homes and
businesses) or indirectly (for
example, through extension of
roads or other infrastructure)?
b) Displace substantial numbers of
existing people or housing,
necessitating the construction of
replacement housing
elsewhere?
a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? (No Impact) The proposed project does not include components that would directly support unplanned population growth, such as new housing, roads, utilities, or other developments. The key element of the project is the effluent percolation field, which is being constructed to provide an alternative to the current system of discharging effluent into two WWTP percolation ponds. This alternative is necessary due to regulatory conditions imposed by the NCRWQCB. As such, the project does not increase sewer capacity for the City of Fortuna in such a manner as to induce population growth.
The project would result in a minor farm road extension and gravel road resurfacing in the vicinity of the effluent percolation fields. These access-related improvements do not appreciably change the nature of the roads (e.g. dirt road to paved residential street) and therefore would not encourage or induce population growth in the project area. There would be no impact. b) Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? (No Impact) The proposed project would not displace people or housing or otherwise effect housing because there is no housing located in the immediate vicinity of the project area and the project does not include modification or construction of housing. There would be no impact.
Wastewater Treatment and Effluent Percolation System Upgrade Project – Administrative Draft IS/Proposed MND | Page 3-48 Public Services
Potentially
Significant
Impact
Less-thanSignificant with
Mitigation
Incorporated
Less-thanSignificant
Impact
No
Impact
Would the project:
a) Would the project result in substantial
adverse physical impacts associated
with the provision of new or physically
altered governmental facilities, need for
new or physically altered governmental
facilities, the construction of which could
cause significant environmental
impacts, in order to maintain acceptable
service ratios, response times or other
performance objectives for any of the
public services: