Agenda Packet — Hercules City Council, May 13, 2025 (part 1 of 2)

Tuesday, May 13, 2025
6:00 PM
City of Hercules
111 Civic Drive
Hercules, CA 94547
City Council
Mayor Dion Bailey
Vice Mayor Chris Kelley
Council Member Alex Walker-Griffin
Council Member Dilli Bhattarai
Council Member Tiffany Grimsley
Dante Hall, City Manager
Christie Crowl, City Attorney
Eibleis Melendez, City Clerk
Meeting Agenda
CLOSED SESSION - 6:00 P.M., REGULAR MEETING - 7:00 P.M
In-Person in Council Chambers or To Watch:

Zoom ID: 812 9402 0591 Zoom Passcode: 049617
Zoom Phone Number: 1-669-900-6833
1 May 13, 2025City Council Meeting Agenda
See last pages of agenda for information regarding meeting procedures To view webcast of meetings, live or on demand, go to the City's website at www.ci.hercules.ca.us I. SPECIAL CLOSED SESSION – CALL TO ORDER - ROLL CALL - 6:00 P.M. 1A. CONSIDER AND TAKE ACTION ON ANY REQUEST FROM A COUNCIL MEMBER TO

PARTICIPATE IN A MEETING REMOTELY DUE TO JUST CAUSE OR EMERGENCY CIRCUMSTANCES PURSUANT TO AB 2449
II. PUBLIC COMMUNICATION - CLOSED SESSION ITEMS
III. CONVENE INTO CLOSED SESSION
The Hercules City Council will meet in Closed Session regarding the following:

1. 25-134
CONFERENCE WITH LABOR NEGOTIATORS Pursuant to
Government Code Section 54957.6 - City Negotiators: Dante Hall, City Manager; Edwin Gato, Director of Finance; relative to the following employee groups:
a. Teamster Local 315 Employee Organization
b. Hercules Police OfficersAssociation
c. Hercules Senior Manager Employee Group
d. Confidential Unrepresented Employee Group
e. Mid Management Employee Group

2. 25-133

CONFERENCE WITH LEGAL COUNSEL - POTENTIAL LITIGATION
Pursuant to Government Code Section 54956.9(e)(1) in one matter IV. REGULAR MEETING – CONVENE TO OPEN SESSION - ROLL CALL - 7:00 P.M.

V. REPORT ON ACTION TAKEN IN CLOSED SESSION
VI. PLEDGE OF ALLEGIANCE
VII. MOMENT OF SILENCE
VIII. INTRODUCTIONS/PRESENTATIONS/COMMISSION REPORTS

1. 25-136
Proclamation - National Public Works Week
National Public Works Week ProclamationAttachments:

2. 25-145 Proclamation - Recognizing Asian American, Native Hawaiian, and Pacific Islander Heritage Month
AANHPI Heritage Month 2025 ProclamationAttachments:

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2 May 13, 2025City Council Meeting Agenda
IX. AGENDA ADDITIONS/DELETIONS
X. PUBLIC COMMUNICATIONS
This time is reserved for members of the public to address issues not included in the agenda. In accordance with the Brown Act, Council will refer to staff any matters brought before them at this time, and those matters may be placed on a future agenda.

Individuals wishing to address the City Council are asked to complete a form indicating the name and address of the speaker and the general topic to be addressed. Speakers must make their comments from the podium and will be allowed 3 minutes to discuss their concerns. All public comments are recorded and become part of the public record. A limit of 30 minutes will be devoted to taking public comment at this point in the agenda. If any speakers remain at the conclusion of the initial 30 minute period, time will be reserved at the conclusion of the meeting to take the remaining comments.

XI. PUBLIC HEARINGS

1. 25-129
Hercules Local Hazard Mitigation Plan and Consistency Updates to the General Plan Safety Element
RECOMMENDATION:

Staff recommends that the City Council adopt Resolution No. 25-XX (Attachment 1) adopting an updated Local Hazard Mitigation Plan (LHMP) to replace the existing LHMP attachment to the General Plan Safety Element, making minor text modifications to the Safety Element for consistency purposes, and finding the action exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3).

Staff Report - LHMP
Attach 1 - Draft City Council Resolution
Exhibit A - Proposed Text Updates to the Hercules Safety Element Attach 2 - Planning Commission Resolution 25-02
Attach 3 - Hercules Local Hazard Mitigation Plan
Attach 4 - FEMA Approvable Pending Adoption Letter
Attachments:

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3 May 13, 2025City Council Meeting Agenda
XII. CONSENT CALENDAR

1. 25-135 Meeting Minutes for the Regular Meeting of April 22, 2025 Meeting Minutes for the Regular Meeting of April 22, 2025Attachments:

2. 25-114 Authorize City Manager to execute an amendment to the City’s October 22, 2024 Professional Services Agreement with LSA Associates, Inc. (LSA) (Resolution No. 24-069) Increasing the Total Cost by $11,800 RECOMMENDATION:

Adopt a Resolution authorizing the City Manager to execute an amendment LSA to provide additional services pursuant to the City’s October 22, 2024 Professional Services Agreement with LSA Associates, Inc. (LSA) (Resolution No. 24-069) increasing the total cost by $11,800.

Staff Report - Contract Amendment With LSA Associates
Attach 1 - Resolution
Attach 2 - Terraphase Proposal Letter
Attachments:

3. 25-130 Accept the Investment Report for the Quarter Ending March 31, 2025 RECOMMENDATION:

Accept the Investment Report for the Quarter Ending March 31, 2025.

Staff Report - Investment Quarterly Report Ending March 31, 2025 Attach 1 - Quarterly Investment Report March 31,2025
Attachments:

XIII. DISCUSSION AND/OR ACTION ITEMS

1. 25-132 Approve Traffic Calming Improvements on John Muir Parkway between Albert Nobel Drive and future Bayfront Loop north of Tioga Loop, and authorize the City Manager to initiate preparation of plans and bid documents
RECOMMENDATION:

Approve Traffic Calming Improvements on John Muir Parkway between Albert Nobel Drive and future Bayfront Loop north of Tioga Loop, and authorize the City Manager to prepare the plans and bid documents.

Staff Report - John Muir Pkwy Traffic Calming Improvements Attach 1 - Resolution - Traffic Calming Improvements
Attach 2 - Kimley Horn Memorandum
Presentation
Attachments:

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4 May 13, 2025City Council Meeting Agenda

2. 25-124 Approval of Quad-City CORE Homeless Services Pilot Program Agreement in the Amount of $48,965
RECOMMENDATION:

Staff recommends that the City Council adopt a resolution to approve the Quad-City CORE Homeless Services Pilot Program Agreement between the cities of Hercules, Pinole, El Cerrito, and San Pablo in partnership with the Contra Costa County CORE Program and authorize the City Manager to execute the agreement.

Staff Report - Approval of Quad-City CORE Homeless Services Pilot Program Agreement Attach 1 - Resolution
Attach 2 - FY 2025-26 Quad City Core Services Agreement Presentation
Attachments:

3. 25-131 Update on the City of Hercules Community Development Department RECOMMENDATION:

Receive an update on the City of Hercules Community Development Department.

Staff Report - Community Development Update
Presentation
Attachments:

4. 25-123 Quarterly Update on FY 2024-2026 Hercules City Council Strategic Goals
RECOMMENDATION:

Receive and file the report on the FY 2024-2026 Hercules City Council Strategic Goals.

Staff Report - 2024-2026 Hercules City Council Strategic Goals Update Attach 1 - FY 2024-2026 Hercules City Council Strategic Goals Report Attach 2 - City Of Hercules 2024 Strategic Goals Work Plan Update Attachments:

XIV. PUBLIC COMMUNICATIONS
This time is reserved for members of the public who were unavailable to attend the Public Communications period during Section X of the meeting, or were unable to speak due to lack of time. The public speaker requirements specified in Section X of this Agenda apply to this Section.

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5 May 13, 2025City Council Meeting Agenda
XV. CITY COUNCIL/CITY MANAGER/CITY ATTORNEY ANNOUNCEMENTS,

COMMITTEE, SUB-COMMITTEE AND INTERGOVERNMENTAL COMMITTEE REPORTS

AND FUTURE AGENDA ITEMS
This is the time for brief announcements on issues of interest to the community. In accordance with the provisions of the Brown Act, matters which do not appear on this agenda but require City Council discussion may be either (a) referred to staff or other resources for factual information or (b) placed on a future meeting agenda.

1. Regional Committee
a. Contra Costa Mayors Conference
b. Hercules/ Pinole - WasteWater Management
c. League of Cities
d. Water Emerg. Transportation Authority
e. WCCIWMA
f. WCCTAC
g. West Co. Mayors & Supervisors Assoc. Meeting
h. WestCat
I. MCE
j. CCTA
k. East Bay Wildfire Coalition of Governments

2. City Council Committees and Subcommittees
a. Econ. Dev. Subcommittee
b. Traffic and Public Safety Committee
c. East Bay Economic Development Alliance
d. Education Subcommittee

3. Commission Liaisons
a. Community & Library Services Commission
b. Finance Commission
c. Planning Commisison
XVI. ADJOURNMENT
The next Regular Meeting of the City Council will be held on Tuesday, May 27, 2025 at 7:00p.m. in the Council Chambers.

Agendas are posted in accordance with Government Code Section 54954.2(a) or Section 54956.

Members of the public can view electronic agendas and staff reports by accessing the City website at www.ci.hercules.ca.us and can receive e-mail notification of agenda and staff report postings by signing up to receive an e-notice from the City’s homepage. Agendas and staff reports may also be obtained by contacting the City Clerk at (510) 799-8200 (Posted: May 8, 2025)

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6 May 13, 2025City Council Meeting Agenda

INSTRUCTIONS ON HOW TO PARTICIPATE AND WATCH THE HERCULES CITY COUNCIL AND PLANNING

COMMISSION HYBRID MEETINGS
Attend in Person: Hercules City Council Chambers – 111 Civic Drive, Hercules, CA 94547 Attend via Zoom Teleconference: Details provided below and zoom webinar login, passcode and phone numbers provided on the agenda cover.

How to Submit Public Comments
In Person: Attend meeting at the Hercules City Council Chambers, fill out a public speaker card located on the side table and submit it to the City Clerk.

Via Zoom: Members of the public may submit a remote public comment via Zoom video conferencing. Download the Zoom mobile app from the Apple Appstore or Google Play. If you are using a desktop computer, you can test your connection to Zoom by clicking here or go to: https://www.zoom.us/join. Zoom also allows you to join by phone at +1-669-900-6833 or +1-929-205-6099 or +1-253-215-8782.

Written Comments Submitted Electronically: All comments received before 3:00 p.m. the day of the meeting will be provided to the City Council prior to the meeting and posted to the City’s agenda website and located by clicking on the “meeting details” tab. Written comments received after 3:00 p.m. will be provided to City Council and posted to the agenda website the following day. Written comments will not be read aloud during the meeting. Email comments to [email protected]. Please indicate which item on the agenda you are commenting on in the subject line of your email.

Written comments submitted in person or via mail: Additional ways to provide your public comment is to either drop off your comment in person to the front desk receptionist located in the City Hall lobby or to mail your comment to City of Hercules, ATTN: City Clerk – Public Comment (Meeting Date), 111 Civic Drive, Hercules, CA 94547 in time to reach the City Clerk no later than 3:00 p.m. on the day of the meeting or you can submit your comment by telephone by calling (510) 799-8208 no later than 3:00 p.m. on the meeting date.

If you need assistance with public comment, please contact: Eibleis Melendez, City Clerk at [email protected] or by calling (510) 799-8200.

All public comments will become part of the official meeting record. As email containing public meeting comments are part of the official record, note that personal contact information may be published if it is included with your email. The City cannot guarantee that its network and/or the website will not be uninterrupted. To ensure that the City Council receives your written comments, you are strongly encouraged to submit your comments in writing in advance of the meeting by 3:00 p.m. on the day of the Council or Commission meeting.

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7 May 13, 2025City Council Meeting Agenda

OTHER WAYS TO WATCH THE MEETING
Live on Channel 28: City Council meetings will replay the following Thursday at 7:00 p.m. and Saturday at 1:00 p.m.

Planning Commission meetings will replay the following Wednesday at 7:00 p.m. and Saturday at 9:00 a.m.

Video Streamed Live on the City’s Website:

To view City Council and Planning Commission meeting videos online go to: Hercules Meeting Videos.

Instructions to view Live or On-Demand Videos from the City’s website:

1. Go to: Hercules Meeting Videos or https://hercules.legistar.com/calendar.aspx.

2. Locate the desired meeting and date.

3. Click the associated “Video” link (Video status is as follows):

Video = Video is available for on demand viewing.

In Progress = Video is available for viewing during live recording.

Not Available = Video is either unavailable or has not been recorded.

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8 May 13, 2025City Council Meeting Agenda

THE HERCULES CITY COUNCIL ADHERES TO THE FOLLOWING POLICIES,

PROCEDURES AND REGULATIONS REGARDING CITY COUNCIL MEETINGS

1. SPECIAL ACCOMMODATIONS: In compliance with the Americans with Disabilities Act, if you require special accommodations to participate at a City Council meeting, please contact the City Clerk at 510-799-8208 at least 48 hours prior to the meeting.

2. AGENDA ITEMS: Persons wishing to add an item to an agenda must submit the final written documentation 12 calendar days prior to the meeting. The City retains the discretion whether to add items to the agenda. Persons wishing to address the City Council otherwise may make comments during the Public Communication period of the meeting.

3. AGENDA POSTING: Agendas of regular City Council meetings are posted at least 72 hours prior to the meeting at City Hall, the Hercules Swim Center, Ohlone Child Care Center, and on the City’s website (www.ci.hercules.ca.us),

4. PUBLIC COMMUNICATION: Persons who wish to address the City Council should complete the speaker form prior to the Council's consideration of the item on the agenda.

Anyone who wishes to address the Council on a topic that is not on the agenda and is relevant to the Council should complete the speaker form prior to the start of the meeting. Speakers will be called upon during the Public Communication portion of the meeting. In accordance with the Brown Act, the City Council may not take action on items not listed on the agenda. The Council may refer to staff any matters brought before them at this time and those matters may be placed on a future agenda.

In the interests of conducting an orderly and efficient meeting, speakers will be limited to three (3) minutes.

Anyone may also submit written comments at any time before or during the meeting.

5. CONSENT CALENDAR: All matters listed under Consent Calendar are considered to be routine and will be enacted by one motion. There will be no separate discussion of these items unless requested by a member of the Council or a member of the public prior to the time the City Council votes on the motion to adopt.

6. LEGAL CHALLENGES: If you challenge a decision of the City Council in court, you may be limited to raising only those issues you or someone else raised at the meeting or in written correspondence delivered at, or prior to, the meeting. Actions challenging City Council decisions shall be subject to the time limitations contained in Code of Civil Procedure Section 1094.6.

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9 IN

TRODUCTIONS/PRESENTATIONS/

COMMISSION REPORTS

AGENDA ITEMS

1. 25-136

2. 25-145
10 PROCLAMATION
RECOGNIZING MAY 18-24 2025 AS NATIONAL PUBLIC WORKS WEEK

IN THE CITY OF HERCULES
WHEREAS, public works professionals focus on infrastructure, facilities, and services that are of vital importance to sustainable and resilient communities and to public health, high quality of life, and well -being of the people of the City of Hercules; and,
WHEREAS, these infrastructure, facilities, and services could not be provided without the dedicated efforts of public works professionals, who are engineers, managers, and employees at all levels of government and the private sector, who are responsible fo r rebuilding, improving, and protecting our nation’s transportation, water supply, water treatment and solid waste systems, public buildings, and other structures and facilities essential for our citizens; and, WHEREAS, City of Hercules Public Works Maintenance and Operations Division serve as first responders to ensure roads remain open during natural disasters for emergency vehicles and evacuations, address and mitigate potential flooding during storms, and address sanitary sewer overflows as quickly as possible to limit health and safety hazards; and
WHEREAS, the City of Hercules Public Works Maintenance and Operations Division maintains and operates 60 miles of underground piping, 6 lift stations, and 9,000 sewer late ral connections; 60 center line miles of streets, approximately 100 miles of sidewalk, 11 traffic signals; 13 parks, street landscaping, the Bay Trail, the Refugio Trail, 4 community facilities, the Hercules Library and City Hall; and WHEREAS, the City of Hercules Public Works Engineering Division administers the City’s 5-Year Capital Improvement Program for the planning, design and construction of new infrastructure such as street reconstructions and sewer line replacements; performs traffic and transport ation engineering including traffic calming, traffic impact studies, and regional transportation planning; and regulates private development to ensure orderly development and conformity to engineering standards through engineering plan checking and construction inspection; and WHEREAS, the year 2025 marks the 65th annual National Public Works Week sponsored by the American Public Works Association , designating the third week of May for citizens and civic leaders to gain knowledge of and maintain a progressive interest in the public works needs and programs of their respective communities.

NOW, THEREFORE, BE IT PROCLAIMED that I, Dion Bailey, Mayor of the City of Hercules, on behalf of the entire City Council, do hereby designate the week of May 18–24, 2025, as National Public Works Week. I urge all citizens to pay tribute to our public works engineers , administrators, and staff for the substantial contributions they make to the health and welfare of the citizens of Hercules.

In witness whereof, I hereunto set my hand and cause the seal of the City of Hercules to be affixed this 13th day of May 2025.
________________________________
Dion Bailey, Mayor
25-136
11 IN

TRODUCTIONS/PRESENTATIONS/

COMMISSION REPORTS

AGENDA ITEM

2. 25-145
12 PROCLAMATION

RECOGNIZING ASIAN AMERICAN, NATIVE HAWAIIN, AND PACIFIC

ISLANDER HERITAGE MONTH IN THE CITY OF HERCULES
WHEREAS, Asian American, Native Hawaiian, and Pacific Islander (AANHPI) Heritage Month is an annual celebration observed in May to recognize the historical and current contributions of individuals and groups of communities from the entire Asian continent, including East, Southeast and South Asia, the Hawaiian islands, and Pacific Island decent within the United States; and
WHEREAS, AANHPI Heritage Month is celebrated in May to commemorate the arrival of the first Japanese and Chinese immigrants that envisioned a better life for themselves and their families and instead were greeted with anti-Asian racism and violence, racist exclusion an d disenfranchisement. Their legacy of strength and perseverance laid the gro undwork for future generations and leaders including Filipino farmworker Larry Itliong, who organized laborers and demanded better wages and working conditions, Lieutenant Susan A hn Cuddy , WWII Navy gunnery officer and the first Korean American woman in the U.S. military , and Congressman Dalip Singh Saund, the first Asian elected into the House of Representatives in 1956 who lobbied to end restrictions to citizenship for Indian and Filipino immigrants.

WHEREAS, AANHPI Asian American and Pacific Islander s continue to be a vital and large part of the Bay Area community accounting for 27% of the population of which 64% are immigrants continue to help shape all facets of our society , culture and daily life as educators, service men and women, artists, athletes, community builders, activists and leaders.

NOW, THEREFORE, BE IT PROCLAIMED, that I, Dion Bailey, Mayor of the City of Hercules, on behalf of the entire City Cou ncil, do her eby reco gnize May 2025 as Asian American, Native Hawaiian and Pacific Islander Herita ge Month in the Ci ty of Hercules. I urge all citizens to learn more about the history of Asian Americans, Native Hawaiians , and Pacific Islanders and their lasting contributions that impact our community and nation today.

In witness whereof, I have hereunto set my hand and caused the seal of the City of Hercules to be affixed this 13th day of May.
__________________________________
Dion Bailey, Mayor
25-145
13 PUBLIC

HEARINGS

AGENDA ITEM

1. 25-129
14

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STAFF REPORT TO THE CITY COUNCIL
DATE: Regular Meeting of May 13, 2025
TO: Mayor and Members of the City Council
VIA: Dante Hall, City Manager
SUBMITTED BY: Timothy Rood, AICP, Community Development Director SUBJECT: Hercules Local Hazard Mitigation Plan and Consistency Updates to the General Plan Safety Element
RECOMMENDED ACTION:

Staff recommends that the City Council adopt Resolution No. 25-XX (Attachment 1) adopting an updated Local Hazard Mitigation Plan (LHMP) to replace the existing LHMP attachment to the General Plan Safety Element , making minor text modifications to the Safety Element for consistency purposes, and finding the action exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3).

PLANNING COMMISSION RECOMMENDATION:

On April 21, 2025 , at their regularly scheduled meeting, the Planning Commission approved Resolution No. 25-02 (Attachment 2), recommending City Council adoption of an updated Local Hazard Mitigation Plan (LHMP) to replace the existing LHMP attachment to the General Plan Safety Element, making minor text modifications to the Safety Element for consistency purposes, and finding the action exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3).

BACKGROUND:

The Federal Disaster Mitigation Act of 2000 requires all cities, counties, and special districts to adopt a Local Hazard Mitigation Plan to receive disaster mitigation funding from the Federal Emergency Management Agency (FEMA). This plan must be adopted by local government every five (5) years.

Pursuant to Assembly Bill No. 2140, passed in 2006, California counties and cities may qualify to be considered for additional State cost-share on eligible Public Assistance projects by adopting a FEMA-approved Local Hazard Mitigation Plan as part of the General Plan Safety Element. While there is no legal requirement, the City of He rcules chose to include the current Local Hazard Mitigation Plan as part of the Hercules Safety Element and staff recommends that the updated LHMP be similarly adopted as part of the Safety Element. 25-129
15

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The City of Hercules originally prepared and adopted a Local Hazard Mitigation Plan in 2021 in conjunction with other updates to the Safety Element. Due to timing and funding considerations, the City of Hercules prepared the 2021 Local Hazard Mitigation Plan independently, based on countywide templates. The current adopted Local Hazard Mitigation Plan attached to and incorporated into the Safety Element expires on June 23, 2026.

In November 2023, the City of Hercules joined numerous local jurisdictions and special districts in a countywide Local Hazard Mitigation Plan update led by Contra Costa County as the lead agency and their consultant, Integrated Solutions Consulting. This participation provided a significant cost savings to the City through utilization of the County’s consultant, allowed the City to be on the same adoption schedule as many other jurisdictions and the County, and provided efficiency by reviewing hazard mitigation on a countywide scale.

Throughout 2024, the County and all of the participating cities and special districts worked with the County’s consultant to create a draft Local Hazard Mitigation Plan (Attachment 3). This draft plan has been reviewed by the California Office of Emergency Services (CalOES) and FEMA, both of which have pre-approved the draft plan, per a let ter from FEMA (Attachment 4) dated January 22, 2025. The City of Hercules must adopt the LHMP on or before September 18, 2025.

The adoption timeframe is dictated by the County’s adoption of its first plan that occurred on September 18, 2024. Once adopted, the Hercules LHMP will expire on September 18, 2029, and the City is required to revisit the plan annually to provide an update to CalOES and FEMA on implementation progress that occurred in the previous year.

ANALYSIS:

The 2024 Hazard Mitigation Plan for Contra Costa County is a countywide planning document (Volume 1) with 39 appendices, including annexes for each of the participating 16 local jurisdictions and 23 special districts. Each of the appendices contain specific details regarding the hazard mitigation elements for that jurisdiction or special district.

Hazard Mitigation Plan Goals:
 Save (or protect) lives and reduce injury.
 Increase resilience of infrastructure and critical facilities.  Avoid (minimize or reduce) damage to property.
 Encourage the development and implementation of long -term, cost -effective, and environmentally sound mitigation projects.
 Build and support capacity to enable local government and the public to prepare for, respond to and recover from the impact of natural hazards.

Identified Hazards:

The LHMP evaluates the applicable hazards and ranks them with a Total Risk Score , ranking from 0 to 100 with a score of 100 carrying the most risk . The ranking process involves an assessment of the likelihood of occurrence for each hazard, along with its potential impacts on people, property and the economy. The following are the hazards for Hercules that are ranked as a High Risk, which is a ranking of 55 and above:
 Earthquake – ranking of 68;
 Landslide – ranking of 59;
 Heavy Rainfall (Severe Weather) – ranking of 56; and,  Flood (Urban/Flash Flood) – ranking of 55.

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Mitigation Actions:

Mitigation Actions are included in the LHMP to address identified risks and vulnerabilities to hazards. Hercules has a total of 17 Mitigation Actions that are recommended for future implementation, as may be necessary:

1. Where appropriate, support retrofitting or relocation of structures in high hazard areas, prioritizing structures that have experienced repetitive losses.

2. Integrate the Hazard Mitigation Plan into other City plans, ordinances, and programs that dictate land use decisions in the community, including the General Plan and Zoning Ordinance.

3. Actively participate in the Hazard Mitigation Plan maintenance protocols outlined in Volume 1 of the Contra Costa County Hazard Mitigation Plan.

4. Continue to maintain good standing and compliance under the National Flood Insurance Program (NFIP) through implementation of floodplain management programs that, at a minimum, meet NFIP requirements. These include:
a. Enforce the flood damage prevention ordinance.
b. Participate in floodplain identification and mapping updates. c. Provide public assistance/information on floodplain requirements and impacts.

5. Dredge Refugio Lake & Replace Aerator Fountains. The fountains aerate the water, reducing algae and dredging will restore the lake to its original depth, as part of the City’s Stormwater Program.

6. Develop and implement a program to capture perishable data after significant events (e.g. high-water marks, preliminary damage estimates, damage photos) to support future mitigation efforts including the implementation and maintenance of this Hazard Mitigation Plan.

7. Support Countywide initiatives identified in Volume 1 of the Contra Costa County Hazard Mitigation Plan.

8. Explore participating in community readiness programs such as Firewise, Ready Set Go, and StormReady.

9. Partner with Rodeo-Hercules Fire Protection District to form a Community Emergency Response Team (CERT).

10. Create an accessible online GIS portal to store and share multi -agency maps and data developed throughout the development of this Hazard Mitigation Plan.

11. Consider developing a Climate Action Plan (CAP) to incorporate relevant research, and maps which might impact hazard planning and policy setting in the City of Hercules.

12. Partner with the community, nonprofits, Police Department, and Fire Protection District to conduct community trainings on emergency preparedness and response (e.g., evacuation routes and shelters).

13. Review the Adapting to Rising Tides policy and program recommendations when updating the Housing Element and completing the next Capital Improvement Program.

14. Install Green Infrastructure where feasible throughout the City in order to promote climate resiliency through the reduction of urban heat, recharging the aquifer, and reducing runoff to the floodplain.

15. Adopt and enforce updated building code provisions to reduce damage risk from natural hazards.

16. Partner with the Contra Costa County Department of Conservation and Development and surrounding municipalities on grant opportunities for climate resiliency efforts.

17. Require development proposed in landslide mapped area to provide a geotechnical analysis to ensure site is buildable, and any construction requirements. 17

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Again, the above actions may be implemented as necessary but whether and when any of them will be taken is speculative at this time. If and when any action is implemented, it will undergo CEQA review at the time of implementation.

Stakeholder and Public Engagement:

Appendix B of the LHMP includes an overview of the stakeholder and public engagement program that was implemented to provide the public with an opportunity to review and provide comments on the LHMP. Hercules had the opportunity to utilize the County’s outreach efforts in addition to the City’s own outreach, which included a ttendance at meetings that were televised, posting information on social media, participating in public events, and placing information where Hercules citizens congregate, such as at the Library, Community Center and at City Hall. In addition to this outreach effort, the City of Hercules also successfully completed the Senate Bill 18 Tribal consultation process, which included outreach to 18 tribal contacts as provided by the Native American Heritage Commission and consultation with the Confederated Villages of Lisjan Nation and the Indian Canyon Band of Costanoan Ohlone People.

Hercules Safety Element – Consistency Modifications:

The Hercules Safety Element, adopted in May 2021, includes two (2) references to the previously adopted LHMP. The first reference, in the Table of Contents, identifies the adoption date as 2020, and the second reference , within the Relationship to Other City Plans section, includes the adoption date and describes the previous ly adopted LHMP. The City Council is thus being asked to amend the Safety Element to update these adoption dates and associated text.

ENVIRONMENTAL DETERMINATION

The proposed LHMP and consistency modifications to the Safety Element are exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3) – Common Sense Exemption in that the LHMP is a data collection, assembly and assessment document that does not allow or require any action that might have a physical effect on the environment. Further, none of the circumstances described in CEQA Guidelines Section 15300.2 applies. Any action to implement the LHMP will undergo future CEQA review if and when taken.

FISCAL IMPACT OF RECOMMENDATION:

There are no direct fiscal impacts associated with this item.

ATTACHMENTS:

Attachment 1 – Draft City Council Resolution
Exhibit A – Proposed Text Updates to the Hercules Safety Element Attachment 2 – Planning Commission Resolution 25-02
Attachment 3 – Hercules Local Hazard Mitigation Plan
Attachment 4 – FEMA Approvable Pending Adoption Letter

18 HERCULES CITY COUNCIL
RESOLUTION NO. 25-XX

A RESOLUTION OF THE CITY COUNCIL ADOPTING AN UPDATED LOCAL HAZARD

MITIGATION PLAN (LHMP) TO REPLACE THE EXISTING LHMP ATTACHMENT TO

THE GENERAL PLAN SAFETY ELEMENT, MAKING MINOR TEXT MODIFICATIONS TO

THE SAFETY ELEMENT FOR CONSISTENCY PURPOSES, AND FINDING THE ACTION

EXEMPT FROM CALIFORN IA ENVIRONMENTAL QUA LITY ACT (CEQA) PURS UANT TO CEQA GUIDELINES SECTION 15061(B)(3).

WHEREAS, the Federal Disaster Mitigation Act of 2000 requires all cities to adopt a Local Hazard Mitigation Plan to receive disaster mitigation funding from the Federal Emergency Management Agency (FEMA); and

WHEREAS, pursuant to Assembly Bill No. 2140, passed in 2006 , California cities may qualify to be considered for additional State cost -share on eligible public assistance projects by adopting a FEMA-approved Local Hazard Mitigation Plan as part of their General Plan Safety Element; and

WHEREAS, the City of Hercules’ Local Hazard Mitigation Plan was prepared in conjunction with the countywide Hazard Mitigation Plan update led by Contra Costa County as the lead agency; and

WHEREAS, the Local Hazard Mitigation Plan has been prepared in accordance with the Disaster Mitigation Action of 2000, and the City of Hercules affirms that the Plan will be reviewed and updated as necessary no less than every five (5) years; and

WHEREAS, the proposed LHMP and consistency modifications to the Safety Element are exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3) – Common Sense Exemption, in that the LHMP is a data collection, assembly and assessment document that does not allow or require any action that might have a physical effect on the environment. Further, none of the circumstances described in CEQA Guidelines Section 15300.2 applies; and

WHEREAS, the City completed the Senate Bill 18 Tribal Notification process, with two (2) tribes, Confederated Villages of Lisjan Nation and the Indian Canyon Band of Costanoan Ohlone People, requesting consultation within the 90-day consultation timeframe , both of which have been concluded; and

WHEREAS, minor revisions to the Safety Element are being made to replace the existing Local Hazard Mitigation Plan with the newly adopted version , to update the description and to revise the references to the adoption date, as shown in Exhibit A; and

19 WHEREAS, the Planning Commission at its April 21 , 2025 meeting passed Resolution 25 -02 recommending City Council adoption of an updated Local Hazard Mitigation Plan (LHMP) to replace the existing LHMP attachment to the General Plan Safety Element, making minor text modifications to the Safety Element for consistency purposes, and finding the action exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3).

WHEREAS, on May 13, 2025, the City Council held a duly noticed public hearing to consider the proposed Resolution related to the Local Hazard Mitigation Plan and Safety Element text amendments, received the staff report and staff presentation, received comments from the public and interested parties and discussed the matter.

NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Hercules as follows:

1. Adopt the Local Hazard Mitigation Plan as a replacement of the existing attachment to the Safety Element.

2. Approve minor text modifications to the Safety Element for consistency purposes , attached as Exhibit A.

3. Find the action exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3).

The foregoing Resolution was duly and regularly adopted at a special meeting of the City Council of the City of Hercules held on the 13th day of May, 2025 by the following vote of the Council:

AYES:

NOES:

ABSTAIN:

ABSENT:

____________________________
Dion Bailey, Mayor

ATTEST:

________________________________
Eibleis Melendez, City Clerk

Exhibit A – Minor Text Modifications to Hercules Safety Element 20 Exhibit A – Hercules Safety Element – Text Amendments HERCULES SAFETY ELEMENT – PAGE VI-3
RELATIONSHIP TO OTHER CITY PLANS ................................ ................................................................ .... 21 REFUGIO CREEK WATERSHED VISION PLAN ................................ ............................................................ 21 CITY OF HERCULES EMERGENCY OPERATIONS PLAN (2014) ................................................................ .... 21 CITY OF HERCULES THREAT ASSESSMENT / EMERGENCY ACTION PLAN (2008) ................................ ........ 21 CITY OF HERCULES LOCAL HAZARD MITIGATION PLAN (20202025) ......................................................... 22 WATERFRONT DISTRICT MASTER PLAN (2012) ................................ ......................................................... 22 CITY OF HERCULES CLIMATE ACTION PLAN ................................ ............................................................ 22

HERCULES SAFETY ELEMENT - Page VI-22
CITY OF HERCULES LOCAL HAZARD MITIGATION PLAN (20202025) A Local Hazard Mitigation Plan (LHMP) is a five -year plan that identifies hazards, assesses vulnerabilities, and outlines strategies to reduce disaster damage. The goal is to reduce loss of life, injury, and property damage.

LHMP Key Components:
• Community profile: Describes the community
• Hazards assessment: Identifies natural hazards that the community faces • Risk assessment: Assesses the community's vulnerabilities to those hazards • Mitigation actions: Outlines strategies to reduce the impact of disasters • Implementation and maintenance programs: Describes how the mitigation actions will be carried out and maintained
The Federal Disaster Mitigation Act of 2000 requires all cities, counties, and special districts to adopt an LHMP to receive disaster mitigation funding from the Federal Emergency Management Agency (FEMA). This plan must be adopted by local governments every five (5) years.

Pursuant to Assembly Bill No. 2140, passed in 2006, California counties and cities can be considered for additional state cost-share on eligible Public Assistance projects by adopting a FEMA-approved Local Hazard Mitigation Plan as part of their Safety Elements.

In conjunction with the update to the Safety Element, the City of Hercules authored a Local Hazard Mitigation Plan. The purpose of the plan is hazard identification, risk assessment, and mitigation strategies for protecting people, property and the environment in the City of Hercules. The Plan focused on four hazards that could have the greatest impact on the city. The hazard ranking process involves an assessment of the likelihood of occurrence for each hazard, along with its potential impacts on people, property, and the economy. Hercules aligned their Goals and Objectives with Contra Costa County’s Multi-Jurisdictional Hazard Mitigation Plan for consistency. The plan complies with federal and state hazard mitigation planning requirements to establish eligibility for funding under the Disaster Mitigation Act of 2000 and fulfills requirements for climate change adaptation and resilience under Gov. Code 65302(g)(4).
21 Planning Commission Resolution 25-02
LHMP Adoption

Page 1 of 2 ends

HERCULES PLANNING COMMISSION
RESOLUTION NO. 25-02

A RESOLUTION OF THE PLANNING COMMISSION RECOMMENDING THAT THE CITY

COUNCIL A DOPT AN UPDATED LOCAL HAZARD MITIGATION PLAN (LHMP) TO

REPLACE THE EXISTING LHMP ATTACHMENT TO THE GENERAL PLAN SAFETY

ELEMENT, MAKE MINOR TEXT MODIFICATIONS TO THE SAFETY ELEMENT FOR

CONSISTENCY PURPOSES , AND FIND THE ACTION EXEMPT FROM CALIFORNIA

ENVIRONMENTAL QUALITY ACT (CEQA) PURSUANT TO CEQA GUIDELINES SECTION 15061(B)(3).

WHEREAS, pursuant to Assembly Bill No. 2140, passed in 2006, California cities may qualify to be considered for additional State cost -share on eligible p ublic assistance projects by adopting a FEMA-approved Local Hazard Mitigation Plan as part of their General Plan Safety Element; and

WHEREAS, the City of Hercules ’ Local Hazard Mitigation Plan was prepared in conjunction with the countywide Hazard Mitigation Plan update led by Contra Costa County as the lead agency; and

WHEREAS, the City completed the Senate Bill 18 Tribal Notification process, with two (2) tribes,
Confederated Villages of Lisjan Nation and the Indian Canyon Band of Costanoan Ohlone People, requesting consultation within the 90-day consultation timeframe, both of which have been concluded; and

WHEREAS, minor revisions to the Safety Element are being made to replace the existing Local Hazard Mitigation Plan with the newly adopted version, to update the description and to revise the references to the adoption date, as shown in Exhibit A; and

Docusign Envelope ID: D2574459-0B9A-4144-A801-7045B54FFF3C 22 Planning Commission Resolution 25-02
LHMP Adoption

Page 2 of 2 ends

WHEREAS, on April 21, 2025, the Planning Commission held a duly noticed public hearing to consider these amendments and did hear and use its independent judgment to consider all said reports, recommendations, and testimony hereinabove set forth.

NOW, THEREFORE, BE IT FURTHER RESOLVED that the Planning Commission of the City of Hercules recommends that the City Council:

1. A dopt the Local Hazard Mitigation Plan as a replacement of the existing attachment to the Safety Element.

2. Approve minor text modifications to the Safety Element for consistency purposes , attached as Exhibit A.

3. Find the action exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Section 15061(b)(3).

PASSED AND ADOPTED by the Planning Commission of the City of Hercules on this 21st day of April, 2025 by the following vote:

AYES: Rubio, Most-Walker, Schaufenbil, Morrison, and Jimenez

NOES: None

ABSENT: None

ABSTAIN: None

Hector Rubio, Chair
ATTEST:

Timothy Rood, AICP
Community Development Director

Exhibit A – Minor Text Modifications to Hercules Safety Element

Docusign Envelope ID: D2574459-0B9A-4144-A801-7045B54FFF3C 23 Exhibit A – Hercules Safety Element – Text Amendments HERCULES SAFETY ELEMENT – PAGE VI-3
RELATIONSHIP TO OTHER CITY PLANS .................................................................................................... 21 REFUGIO CREEK WATERSHED VISION PLAN ............................................................................................ 21 CITY OF HERCULES EMERGENCY OPERATIONS PLAN (2014) .................................................................... 21 CITY OF HERCULES THREAT ASSESSMENT / EMERGENCY ACTION PLAN (2008) ........................................ 21 CITY OF HERCULES LOCAL HAZARD MITIGATION PLAN (20202025) ......................................................... 22 WATERFRONT DISTRICT MASTER PLAN (2012) ......................................................................................... 22 CITY OF HERCULES CLIMATE ACTION PLAN ............................................................................................ 22

HERCULES SAFETY ELEMENT - Page VI-22
CITY OF HERCULES LOCAL HAZARD MITIGATION PLAN (20202025) A Local Hazard Mitigation Plan (LHMP) is a ﬁve -year plan that identiﬁes hazards, assesses vulnerabilities, and outlines strategies to reduce disaster damage. The goal is to reduce loss of life, injury, and property damage.

LHMP Key Components:
• Community proﬁle: Describes the community
• Hazards assessment: Identiﬁes natural hazards that the community faces • Risk assessment: Assesses the community's vulnerabilities to those hazards • Mitigation actions: Outlines strategies to reduce the impact of disasters • Implementation and maintenance programs: Describes how the mitigation actions will be carried out and maintained
The Federal Disaster Mitigation Act of 2000 requires all cities, counties, and special districts to adopt an LHMP to receive disaster mitigation funding from the Federal Emergency Management Agency (FEMA). This plan must be adopted by local governments every ﬁve (5) years.

In conjunction with the update to the Safety Element, the City of Hercules authored a Local Hazard Mitigation Plan. The purpose of the plan is hazard identiﬁcation, risk assessment, and mitigation strategies for protecting people, property and the environment in the City of Hercules. The Plan focused on four hazards that could have the greatest impact on the city. The hazard ranking process involves an assessment of the likelihood of occurrence for each hazard, along with its potential impacts on people, property, and the economy. Hercules aligned their Goals and Objectives with Contra Costa County’s Multi-Jurisdictional Hazard Mitigation Plan for consistency. The plan complies with federal and state hazard mitigation planning requirements to establish eligibility for funding under the Disaster Mitigation Act of 2000 and fulﬁlls requirements for climate change adaptation and resilience under Gov. Code 65302(g)(4).

Docusign Envelope ID: D2574459-0B9A-4144-A801-7045B54FFF3C 24 City of
Hercules
Annex
2024 Hazard
Mitigation
Plan
Contra Costa County,
California
25 2024 Hazard Mitigation Plan
Contra Costa County, California

Table of Contents i

TABLE OF CONTENTS

1. Introduction ............................................................................................................................... 1

2. Local Planning Team ................................................................................................................ 1

3. Jurisdiction Profile .................................................................................................................... 1

3.1. Population .......................................................................................................................... 1

3.1.1. Underserved Population ............................................................................................. 2

3.2. Brief History ........................................................................................................................ 3

3.3. Governing Body Format ...................................................................................................... 3

4. Development Trends ................................................................................................................. 3

4.1. Changes in Priority ............................................................................................................. 5

5. Capability Assessment ............................................................................................................. 5

5.1. Planning and Regulatory Capabilities ................................................................................. 6

5.2. Administrative and Technical Capabilities ......................................................................... 11

5.3. Financial Resources ......................................................................................................... 13

5.4. Education and Outreach Capabilities ................................................................................ 15

6. Hazard Mitigation Plan Integration ......................................................................................... 16

6.1. Past Plan Integration ........................................................................................................ 16

6.2. Potential Future Integration .............................................................................................. 17

7. Significant Hazard Past Events .............................................................................................. 18

8. National Flood Insurance Program ........................................................................................ 19

8.1. Floodplain Manager .......................................................................................................... 19

8.2. Participation Activities ....................................................................................................... 19

8.2.1. Substantial Damage.................................................................................................. 19

8.2.2. Substantial Improvement .......................................................................................... 19

8.3. Repetitive Loss and Severe Repetitive Loss Properties .................................................... 20

9. Hazard Vulnerability and Impact Assessment ...................................................................... 20

9.1. FEMA National Risk Index ................................................................................................ 26

9.1.1. Expected Annual Loss .............................................................................................. 26

9.1.2. Social Vulnerability ................................................................................................... 27

9.1.3. Community Resilience .............................................................................................. 28

9.1.4. Annualized Frequency .............................................................................................. 28

10. Hazard Risk Ranking .......................................................................................................... 29

11. Mitigation Actions .............................................................................................................. 31 Appendix A. Hazard Maps ........................................................................................................ 50 Appendix B. Stakeholder and Public Engagement ................................................................ 57 Appendix C. Hazard Risk Assessment Methodology ............................................................. 75 26 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex ii
Appendix D. Hazard Risk Ranking Details .............................................................................. 83 Appendix E. Plan Adoption .................................................................................................... 103 27 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 1

1. INTRODUCTION
This Annex details the hazard mitigation elements specific to the City of Hercules, a participating jurisdiction to the 2024 Contra Costa County Hazard Mitigation Plan update. This Annex is not intended to be a standalone document but supplements the information contained in Volume 1 (Planning Area- wide Elements). Therefore, all sections of Volume 1 (Planning Area- wide Elements) including the planning process, mitigation goals and objectives, hazard identification and risk assessment, mitigation strategy, and plan maintenance apply to and were met by the City of Hercules. This Annex provides additional information specific to the City, with a focus on providing additional details on the hazard risk assessment and mitigation strategy (i.e., mitigation actions) for this community.

2. LOCAL PLANNING TEAM
The City of Hercules Local Planning Team was comprised of the members listed on Table 1.

Table 1. City of Hercules Local Planning Team Members
Name Title Department
Seana Field Senior Planner City of Hercules Community
Development Department
Joseph Vazquez Chief of Police City of Hercules Police Department

3. JURISDICTION PROFILE
The City of Hercules, incorporated in December 1900, is in western Contra Costa County, California.

Situated along the coast of San Pablo Bay, about 10 miles north of Berkeley, California. The City has a predominantly suburban character dominated by two (2) story detached and attached homes, and one (1) story commercial building divided into various subdivisions along well landscaped roads. The waterfront, which has a planned rail/ferry station, is zoned for higher density transit oriented development with community retail. A few three (3) to five (5) story mixed- use developments have been constructed there since 2015. The portion of the City located inland of Interstate 80 (I-80), is mainly characterized by gently rolling hills along Refugio Valley Road. The City is primarily composed of subdivisions built between the 1970s and 1980s. The residential neighborhoods are known to the locals as “the Birds,” “the Trees and Flowers,” “the Gemstones”, “the Astronauts”, and “the Islands”, per the street naming conventions of each subdivision.

3.1. Population
The City of Hercules had a population of 25,920 as of July 1, 2022. Between 2010 and 2020, the population increased by approximately 8.1%; however, a slight population decrease of 0.4% occurred between 2020 and 2022. Table 2 shows the City of Hercules’ population distribution between 2010 and 2022.
1 Table 2. Population Estimates
Jurisdiction 2010 2020 2022 Population Change
(2010 – 2022)
City of Hercules 24,060 26,016 25,920 7.7%

1 United States Census Bureau. (2022). Quick Facts: City of Hercules. Retrieved from https://www.census.gov/quickfacts/fact/table/herculescitycalifornia/. 28 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 2

3.1.1. Underserved Population
The 2023 California State Hazard Mitigation Plan identifies the Centers for Disease Control and Prevention (CDC) Social Vulnerability Index (SVI) as the most appropriate and authoritative dataset to identify areas where efforts can be prioritized to ensure equitable outcomes from mitigation planning and actions.

CDC’s SVI combines 16 social factors, within four (4) themes (i.e., socioeconomic status, household characteristics, racial and ethnic minority status, and housing type and transportation), to identify areas of social vulnerability. Table 3 outlines the SVI information for the City of Hercules.

Note: ArcGIS mapping analysis was performed utilizing Census Tract data by overlaying Census Tracts with the City of Hercules planning area boundary. The information outlined in this section includes data from the Census Tracts that intersect the jurisdiction.

Table 3. Social Vulnerability Index (2020)
Theme Social Factors Population Percent
Socioeconomic
Status
People below 150% poverty estimate 5,981 23.0%
Unemployed
(Civilian 16 years old and older) 1,490 5.7%
Housing Cost Burden 4,029 15.5%
No High School Diploma 3,300 12.7%
No Health Insurance 2,198 8.5%
Household
Characteristics
65 years old and older 9,346 36.0%
17 years and younger 9,987 38.4%
Civilian with a Disability 5,246 20.2%
Single-Parent Household 1,091 4.2%
English Language Proficiency 2,144 8.2%
Racial and Ethnic
Minority Status
• Hispanic or Latino (of any race)
• Black or African American
• Asian
• American Indian or Alaska Native
• Native Hawaiian or Pacific Islander
• Two or More Races
• Other Races
22,328 85.8%
Housing Type and
Transportation
Multi-Unit Structures 1,083 4.2%
Mobile Homes 52 0.2%
Crowding 650 2.5%
No Vehicle 587 2.3%
Group Quarters 167 0.6%
29 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 3

3.2. Brief History
The site of Hercules was first developed in 1881 as a manufacturing facility by the California Powder Works for the production of its patented dynamite formulation, Hercules powder. In 1882, the Hercules Powder Company was incorporated and assumed responsibility for the Hercules site. It was one of several explosive manufacturers that were active along the Pinole shoreline in the late 19 th to mid-20th century. The small company town that grew up near the facility subsequently became known as "Hercules" and was incorporated at the end of 1900.

Between the 1890s and 1970s, the City of Hercules was a company town of several hundred people. 36 buildings from this era remain and were nominated to the National Register of Historic Places in 1980.

By the 1940s, Hercules organized its own law enforcement department and longtime Hercules Powder Company employee William Darke was named sheriff, becoming its first officer. After World War II, the company began to diversify its production line and built an anhydrous ammonia plant, a base for fertilizer.

Explosive manufacturing was discontinued in Hercules in 1964.

In 1974, the cessation of explosives production allowed hundreds of acres of protective “buffer” land (separated by large stands of eucalyptus trees) to be reused for other purposes. Real estate development companies began to develop the land and the City of Hercules began to transform into the bedroom community it is known as today.

3.3. Governing Body Format
The City of Hercules has a City Council/City Manager form of local municipal government. Policy making and legislative authority is vested in a five (5) member City Council. The City Council is elected at large on a nonpartisan basis and serves staggered four (4) year terms. In December of each year, the City Council conducts a reorganization of the Council at which time the Mayor and Vice Mayor are appointed for one (1) year terms. The City Manager is appointed by the City Council and is the Chief Executiv e Officer of the Municipal Corporation.

The City Council presides over and adopts the City’s annual budget and financial affairs; appoints commissions and committees; and hires and supervises the City Manager. City Council members are responsible for service to the citizens, businesses, and policies of the City. The City Manager advises the City Council, supervises personnel and all City departments; enforces ordinances and programs approved by City Council; and oversees day-to-day City government operations.

4. DEVELOPMENT TRENDS
California Law requires counties and cities to prepare and adopt a General Pan, a comprehensive long- range plan to guide community development. The General Plan must contain seven (7) state-mandated elements – land use, housing, circulation, safety, open space, conservation, and noise – and may contain additional elements as a jurisdiction sees fit. Additionally, the General Plan must comprise an integrated and internally consistent set of goals, policies, and implementation measures. The City of Hercules adopted its General Plan under this law and has updated various elements several times over the years, most recently the Circulation element in 2018 and the Safety Element in 2021.

The Bay Area is the fifth largest metropolitan area in the nation and has seen a steady increase in population since 1990, except for a dip during the Great Recession that began in 2008. Many cities in the region have experienced significant growth in jobs and population. While these trends have led to a corresponding increase in demand for housing across the region, the regional production of housing has not kept pace with job and population growth.
30 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 4
The City of Hercules, facing critical financial and growth challenges, chartered an innovative urban design based land use planning effort at the turn of the millennium. The resulting Plan for Central Hercules provides a vision and the regulatory path to create a much needed, pedestrian friendly, commercial Town Center. The open, inclusive planning effort changed the public conversation about growth, helped build community, and is delivering tangible financial benefits. The Hercules District Plan Initiative was a significant effort and accomplishment for a small California city. Other planning initiatives include the following:

• Owl Ranch (formerly Skelly Residential): Approved a 40 lot single family subdivision on an approximately 7.44-acre site, the former McLeod Ranch property. • Franklin Canyon Area: An area of approximately 973 acres containing 646 acres within City limits and 327 acres outside City limits subject to Measure M passed by voters in 2004. The Area includes the Franklin Canyon Golf Course, Muir Heritage Land Trust open space/trail/grazing area and additional private properties outside City limits.
• Hilltown (also known as Hill Crest): Approved mixed-use residential development of up to 598 attached multi-family units and 4,200 square feet of neighborhood commercial uses on a former industrial site of 44 acres located on San Pablo Avenue near Victoria by the Bay. • The Hercules Hub: Is set to become the first west coast facility combining three (3) modes of transit (bus, rail, and ferry) in one (1) location. Nearly two (2) decades in the making, the Hercules Hub aims to connect thousands of housing units with a new train stop along the Capitol Corridor, bicycle and pedestrian pathways, bus routes, carpool options, and future ferry service. • Sycamore Crossing: Owned by the Lewis Group, this 12-acre mixed use property on the south side of Sycamore Avenue is approved to be developed with retail, hotel, and residential uses to complement and expand on the Aventine and Bayside projects. • Waterfront (also known as Hercules Bayfront): Construction is underway for the 40-acre mixed use development, making it one of the west coast's largest transit oriented projects.

Table 4 summarizes development trends in the performance period since development of the previous hazard mitigation plan and expected future development trends.

Table 4. Recent and Expected Development Trends
Criteria Response
Has your jurisdiction annexed any
land since the development of the
previous Hazard Mitigation Plan?
No
If yes, give the estimated area
annexed and estimated number of
parcels or structures.

N/A
Is your jurisdiction expected to annex
any areas during the performance
period of this Plan?
No
Has your jurisdiction had any major
changes in development over the
past five (5) years that have occurred
in hazard prone areas?
No
If yes, please briefly describe. N/A
Are any areas targeted for
development or major redevelopment
in the next five (5) years that will
occur in hazard prone areas?
Yes
31 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 5
Criteria Response
If yes, please briefly describe.
• Franklin Canyon Area: 162 acres redevelopment of the
Franklin Canyon Golf Course into a RV Resort with 158 RV spaces, 22 campsites, a clubhouse, and outdoor amenities. • Hilltown: Mixed-use residential development of approximately 598 residential units, consisting of 198
condominiums/apartments and 400 townhomes/motor court
units (5% set aside for moderate-income housing), and 4,200 square feet of neighborhood commercial on a 44-acre former industrial site.
• Bayfront: The full build-out will include: 1,526 multi-family residences (5% set aside for low income (60% of median
income) affordable housing); 93,000 square feet of retail; 35,000 square feet of office space; and, a Regional Intermodal Transportation Center, combining rail (Capitol Corridor), ferry (WETA), and bus (West CAT) transit services.
• Sycamore Crossing: 120 multi-family residences; 105-room hotel; and 29,500 square feet of retail.

Portions of these areas are in known hazard areas. Development will mitigate or avoid hazard areas.

Please provide the number of permits
for each hazard area or provide a
qualitative description of where
development has occurred.
• Special Flood Hazard Areas: 0
• Landslide: 0 (Landslide vulnerability is described as “scattered small landslides” and slide locations are mapped in locations with primarily very low development. All development required to have a soils report and mitigate hazard.)

• High Liquefaction Areas: 0
• Dam Failure Inundation Area: 0
• Wildfire Risk Areas: 0

4.1. Changes in Priority
The overall hazard mitigation priorities have not significantly changed for the City of Hercules since the last Plan update. However, mitigation actions from the previous Plan were updated, and a more concerted effort on achieving equitable outcomes for all communi ties, including underserved communi ties and socially vulnerable populations, has been implemented.

5. CAPABILITY ASSESSMENT
Federal regulations require hazard mitigation plans to identify goals for reducing long-term vulnerabilities to the identified hazards in the planning area (Section 201.6(c)(3)(i)). A critical step in the development of specific hazard mitigation actions and projects is assessing existing authorities, policies, programs, and resources and capabilities to use or modify local tools to reduce losses and vulnerability from profiled hazards.

A capability assessment was conducted for the City of Hercules and participating jurisdictions’ authorities, policies, programs, and resources. Goals and mitigation actions were developed using input from this assessment. Information regarding the City’s implementation of and continued participation in the National Flood Insurance Program (NFIP) can be found in Section 8 of this Annex.

The Local Planning Team assessed the City’s capabilities that can contribute to the reduction of long- term vulnerabilities to hazards. The capabilities include the following categories:

32 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 6
• Planning and Regulatory Capabilities
• Administrative and Technical Capabilities
• Financial Capabilities
• Education and Outreach Capabilities

Additionally, ways to expand on and improve these existing policies and programs to integrate hazard mitigation into the day-to-day activities and programs of the City were considered.

5.1. Planning and Regulatory Capabilities
These include local ordinances, policies, and laws to manage growth and development (e.g., land use plans, capital improvement plans, transportation plans, emergency preparedness and response plans, building codes, and zoning ordinances). The City of Hercules will adopt the approved 2024 Contra Costa County Hazard Mitigation Plan into the City’s General Plan Safety Element for AB 2140 compliance.

Table 5 contains a list of legal and regulatory capabilities. The description section of each Planning and Regulatory Capability includes a paragraph on expansion, implementation, and improvement.

Table 5. Planning and Regulatory Capabilities
City Code, Title 3: Public Safety
Includes: Disaster organization and response processes, Fire Code, Fire Zones, Explosives Title 3 provide for the preparation and carrying out of plans for the protection of people and property within the City in the event of an emergency; the direction of the emergency organization; and the coordination of the emergency functions of this City with all other public agencies, corporations, organizations, and affected private people. Title 3 also provides information specific to urban and wildland fires, fire zones, and applicable codes.

Expansion, Implementation, and Improvement: The Public Safety Code will be reviewed based on developing trends in identified hazards and mitigation measures that can make them more effective at preventing losses.

Lead
Department
Rodeo–Hercules Fire Protection
District
Hazards
Addressed
Climate Change, Dam and Levee
Failure, Drought, Earthquake,
Flood, Landslide, Sea Level Rise,
Severe Weather, Tsunami,
Wildfire, Hazardous Materials
Incident, Utility Interruptions,
Active Shooter, Terrorism
City Code, Title 5: Sanitation and Health
Includes: Water Systems Codes, Stormwater Management and Discharge Control, Sewers Inspection Title 5 addresses sanitation, sewers, and stormwater management. This section of the City Code also carries out the conditions in the City's National Pollutant Discharge Elimination System (NPDES) permit that require effective implementation of appropriate source control and site design measures and stormwater treatment measures.

Expansion, Implementation, and Improvement: The Sanitation and Health Code will be reviewed based on developing trends in identified hazards and mitigation measures that can make them more effective at preventing losses. Mitigation actions in this Hazard Mitigation Plan can inform updates and revis ions to the Code.

Lead
Department
City of Hercules Public Works
Department (Engineering Division)
Hazards
Addressed
Climate Change, Flood, Sea Level
Rise, Tsunami
33 2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 7
City Code, Title 9: Building Regulations
Includes: Building Code, Electrical Code, Plumbing Code, Mechanical Code, Housing Code, House Moving, Grading, Community Preservation, Building Security Code, Historical Building Code, Residential Code City Building Regulations (incorporates by reference and is based upon the 2022 California Building Code, 2022 California Residential Code, 2022 California Green Building Standards Code, and 2022 California Existing Building Code [all codified in California Code of Regulations, Title 24]); adopted November 17, 2022.

Title 9 also addresses minimum standards for structural seismic resistance established primarily to reduce the risk of building damage, injury, and loss of life.

Expansion, Implementation, and Improvement: The Building Regulations will be reviewed based on developing trends in identified hazards and mitigation measures that can make them more effective at preventing losses. They will be updated to comply with the latest International and State building code s.

Lead
Department
City of Hercules Community
Development Department
Hazards
Addressed
Climate Change, Drought,
Earthquake, Flood, Sea Level
Rise, Severe Weather, Tsunami,
Wildfire
City Code, Title 10: Land Use
Title 10 provides land use regulations for the City. In coordination with Title 13, this section of the Code provides guidelines and regulations on zoning, subdivisions, and facility review.

The Subdivision code addresses the development of groups of residences and commercial property. It describes requirements for transportation, water, and wastewater services. It sets limits on residential property density. The Planning Commission is designated as the Advisory Agency with respect to subdivisions.

Title 10 also includes details and provisions for the City’s Hazardous Waste Management Plan and flood damage prevention.

Expansion, Implementation, and Improvement: Land Use within the City provides for adequate infrastructure to support residential area populations. The EOP and relevant plans/annexes should be updated to align with the Chapters on the Hazardous Waste Management Plan and Flood Damage Prevention.

City of Hercules Annex 8
City Code, Title 13: Zoning
Includes: Subdivisions, Flood Damage Prevention, Hazardous Waste Management Plan The purpose of Title 13 is to promote public health, safety, and welfare and general prosperity with the aim of preserving a wholesome, serviceable, and attractive community. More specifically, the purpose of the Zoning Ordinance is to:

A. Preserve and enhance the community’s quality of life with well-balanced growth and development.

B. Enhance and create a community with a wide range of choices, services, and amenities.

C. Accommodate expansion of development into vacant or underdeveloped lands and lands subject to redevelopment.

D. Provide a set of regulations and procedures to review and process land use and development applications in an open, fair, and equitable manner.

E. Facilitate attractive, functional, and safe development within the City for a variety of uses, which may at times be combined on a site.

F. Minimize adverse environmental effects and fiscal consequences to the community.

Expansion, Implementation, and Improvement: Zoning Code may be used to address land use regulations that support mitigation actions such as development in wetlands and floodplains and preservation of open space.

Lead
Department
City of Hercules Community
Development Department
Hazards
Addressed
Climate Change, Drought,
Earthquake, Flood, Sea Level
Rise, Severe Weather, Tsunami,
Wildfire
California Fire Code and Local Amendments
The District adopted the 2022 California Fire Code (California Code of Regulations, Title 24, Part, 9 [based on the 2021 International Fire Code published by the International Code Council] The California Fire Code (CFC) contains regulations consistent with nationally recognized and accepted practices for safeguarding life and property from fire and explosion, dangerous conditions arising from the storage, handling, and use of hazardous materials and devices, and hazardous conditions in the use or occupancy of buildings or premises.

To ensure new construction and tenant improvements meet or exceed local standards to secure life safety related to building construction features and systems used to prevent ignition and fire spread as well as facilitate occupant escape.

Expansion, Implementation, and Improvement: The Fire Code must be modified and updated to reflect changes in development.

City of Hercules Annex 9
City General Plan
Includes: Land Use, Circulation, Housing, Open Space, Safety, Noise, Economic, Hazardous Waste, Growth The City’s General Plan is the community's vision about how it will grow and reflects the community's priorities and values while shaping the future. As the legal underpinning for land use decisions within the City, the General Plan consists of an introduction and nine (9) elements:

1. Land Use

2. Circulation

3. Housing

4. Open Space Conservation

5. Safety

6. Noise

7. Hazardous Waste Management Plan

8. Economic Development

9. Growth Management

The General Plan also includes an Environmental Impact Report, which is used to assess potential environmental impacts as a result of development or non-development. It is analogous to the Environmental Impact Assessments required by the 1969 national Environmental Policy Act.

Expansion, Implementation, and Improvement: This Hazard Mitigation Plan will be incorporated in the General Plan Safety Element. The opportunity to incorporate additional hazard mitigation and abatement measures will be contemplated for inclusion into the updated General Plan.

Lead
Department
City of Hercules Community
Development Department
Hazards
Addressed
Climate Change, Drought,
Earthquake, Flood, Sea Level
Rise, Severe Weather, Tsunami,
Wildfire
County Climate Action Plan
The Contra Costa County Climate Action Plan (CAP), adopted in December 2015, is the County’s strategic approach to reduce greenhouse gas (GHG) emissions from sources throughout the unincorporated area. The CAP reflects the County’s programs and actions to decrease energy use, improve energy efficiency, develop renewable energy, reduce vehicle miles traveled, increase multi-modal travel options, expand green infrastructure, reduce waste, and improve the efficiency of government operations. The City is in the process of developing its own CAP.

Expansion, Implementation, and Improvement: The City is in the process of considering development of a local CAP.

Lead
Department
Contra Costa County Department
of Conservation and Development,
City of Hercules Community
Development Department
Hazards
Addressed
Climate Change, Drought, Flood,
Sea Level Rise, Severe Weather,
Wildfire
Contra Costa Hazardous Materials Plan / Hazardous Material Business Plan Addresses the storage, use, and emergency planning for hazardous materials and extremely hazardous substances in the community and businesses.

Expansion, Implementation, and Improvement: This Hazard Mitigation Plan will support mitigation measures compatible with the County Hazardous Materials Plan to reduce potential hazardous materials releases.

Lead
Department
Contra Costa Health Services,
Hazardous Materials Program
Office; Contra Costa County Fire
Protection District
Hazards
Addressed Hazardous Materials Incidents
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City of Hercules Annex 10
Emergency Operations Plan
The Emergency Operations Plan (EOP) outlines how the City, its government, stakeholder agencies, community- based organizations (CBO), business community, and residents – coordinate their response to major emergencies and disasters. The EOP identifies operational strategies and plans for managing inherently complex and potentially catastrophic events. This Plan is regularly updated by staff and approved by the City Council.

Expansion, Implementation, and Improvement: This Hazard Mitigation Plan will be used as an essential tool to update the City EOP. California Office of Emergency Services (Cal OES) requires that EOPs describe applicable hazards as part of the Plan. The latest Hazard Mitigation Plan hazards descriptions will be included.

Mitigation actions that are preparedness and response in nature will be analyzed for applicability for inclusion in the description of EOP processes and procedures.

Lead
Department
City of Hercules Police
Department
Hazards
Addressed
Climate Change, Dam and Levee
Failure, Drought, Earthquake,
Flood, Landslide, Sea Level Rise,
Severe Weather, Tsunami,
Wildfire, Hazardous Materials
Incidents, Utility Interruptions,
Active Shooter Incidents,
Terrorism
Capital Improvement Plan
The Capital Improvement Plan (CIP) provides broad direction for development of City facilities and infrastructure. It describes a strategy to maintain adequate support for the City’s communities and commerce. It addresses transportation, utilities, essential City facilities, and provides flexibility to respond to other projects or issues as they arise.

Expansion, Implementation, and Improvement: The CIP should continue to utilize flexibility in the CIP to incorporate mitigation measures in planned projects and the project evaluation criteria which includes public health and safety, regulatory compliance, and grant funding requirements.

Lead
Department
City of Hercules Public Works
Department (Engineering Division)
Hazards
Addressed
Climate Change, Dam and Levee
Failure, Drought, Earthquake,
Flood, Landslide, Sea Level Rise,
Severe Weather, Tsunami,
Wildfire
Continuity of Operations Plan
The Plan is under development.

City of Hercules Annex 11
Stormwater Control Plan
The Stormwater Control Plan (SCP) is responsible for ensuring that the City complies with its municipal stormwater NPDES permits. The NPDES Program is mandated by the Federal Clean Water Act and administered in California by the State Water Resources Control Board and the Regional Water Quality Control Boards on behalf of the U.S. Environmental Protection Agency.

Expansion, Implementation, and Improvement: Mitigation actions in this Hazard Mitigation Plan can inform updates and revisions to the SCP. Watershed protection processes are a useful source of information for developing mitigation activities. This Hazard Mitigation Plan should be aligned with the S CP.

Lead
Department
City of Hercules Public Works
Department
Hazards
Addressed Flood
Alameda and Contra Costa County Regional Wildfire Prevention Plan The Contra Costa Resource Conservation District (CCRCD) and the Alameda City Resource Conservation District (ACRCD) worked jointly with funding from the Coastal Conservancy to develop a Regional Priority Plan (RPP) for Contra Costa and Alameda counties. The goal of the RPP process was to identify regional natural resource concerns that could be exacerbated by catastrophic wildfire and develop projects or other methods to remedy those issues ahead of the next wildfire event. The planning process started in November 2020 and completed in September 2022.

Expansion, Implementation, and Improvement: This Hazard Mitigation Plan and Regional Wildfire Prevention Plan should be aligned where mitigation actions in this Hazard Mitigation Plan support the goals of the Regional Wildfire Prevention Plan. The wildfire analysis in this Hazard Mitigation Plan can inform updates and revisions to the Wildfire Prevention Plan.

Lead
Department
Rodeo-Hercules Fire Protection
District with support from Contra
Costa County Fire Protection
District
Hazards
Addressed Wildfire
Contra Costa County Community Wildfire Protection Plan
The Contra Costa County Wildfire Protection Plan (CWPP), updated in 2019, provides an analysis of wildfire hazards and risk in the wildland urban interface (WUI) in Contra Costa County. The Plan follows the standards for CWPPs established by the Federal Healthy Forest Restoration Act.

Expansion, Implementation, and Improvement: This Hazard Mitigation Plan and County Community Wildfire Protection Plan should be aligned where mitigation actions support the goals of the CWPP. The wildfire analysis in this Hazard Mitigation Plan can inform updates and revisions to the CWPP.

Lead
Department
Rodeo-Hercules Fire Protection
District with support from Contra
Costa County Fire Protection
District
Hazards
Addressed Wildfire

5.2. Administrative and Technical Capabilities
The administrative and technical capabilities include community (i.e., public and private) staff and their skills and tools, which can be used for mitigation planning and implementation. This capability includes engineers, planners, emergency managers, GIS analysts, building inspectors, grant writers, and floodplain managers. Small communities may rely on other government entities, such as counties or special districts, for resources. These capabilities may be used to support mitigation activities. Table 6 lists administrative and technical capabilities.

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Table 6. Administrative and Technical Capabilities
Planners, Engineers, Building Officials, and Code Enforcement The planners, engineers, building officials, and code enforcement personnel issue building permits, review plans for new construction and improvements; conduct plan checks; work with architects, engineers, designers, and building owners during pre-construction; inspect all phases of residential and commercial/industrial construction for compliance; enforce municipal code violations.

Expansion and Improvement: Provide opportunities for continued education to Community Development staff to maintain state of the art knowledge of new code and regulatory requirements.

Department City of Hercules Community Development Department Planners, Engineers, Analysts, and General Staff
The planners, engineers, analysts, and general staff plan future City land use; develop and implement the General Plan, land use regulations through zoning and subdivision codes, and environmental review of development; administer the Community Development Block Grant Program (CDBG), conduct Code Compliance Program with the Building Division; conduct conditional use permits, variances, land subdivision, California Environmental Quality Act (CEQA) review, public hearings, noise permits, and zoning information.

Expansion and Improvement: Provide opportunities for continued education to Community Development staff to maintain state-of-the-art knowledge of new code and regulatory requirements.

Department City of Hercules Community Development Department Director, Assistant Director, Superintendent, Supervisor, Engineers, Analysts, General Staff Directors, assistant directors, superintendents, supervisors, engineers, analysts, and general staff oversee public and private improvements in the public right of way; develop and implement the Capital Improvement Program by providing staff support to the City relative to City streets, sanitary sewer, storm drains, water system facilities, traffic signals, park, and recreational f
acilities; maintain and upgrade public infrastructure; provide services related to traffic issues; monitors the street lighting system maintained by the City and PG&E; keeps and maintains record drawings of City owned infrastructure; conducts traffic committee meetings with the Police Department; and provides engineering support to other City departments and divisions within the Public Works Department.

Expansion and Improvement: Provide opportunities for continued education to Public Works staff to maintain state of the art knowledge of new code and regulatory requirements.

Department City of Hercules Public Works Department
Police Department and Emergency Services
The Police Department provides for the coordinated response and recovery from major emergencies and disasters; develop, administer and coordinate the emergency planning preparedness program in conformity with local, State, and Federal requirements; develop emergency management and hazard mitigation plans; provide training to City staff in emergency planning and preparedness; develop, maintain, and coordinate the City Emergency Operations Center (EOC); provide businesses and residents with emergency planning and preparedness material to help reduce the loss of life and property resulting from a disaster; coordinate with City, County, State, and Federal counterparts; prepare emergency management grants; coordinate the efforts of volunteer organizations.

Expansion and Improvement: Provide training to EOC staff, and other key personnel to better prepare for potential hazards and take action to report them.

Department City of Hercules Police Department
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City of Hercules Annex 13
Floodplain Administrator
As a member of the NFIP, the Floodplain Administrator is responsible for collaborating with stakeholders to ensure the Floodplain Management Ordinance is followed within the City. The duties of the Floodplain Administrator are outlined in the Code of Ordinances, 8.35.050.

Expansion and Improvement: Continue to manage the City’s NFIP participation. Support the development of mitigation activities consistent with the best practices for floodplain management.

Department City of Hercules Public Works Department
Public Information Officer
The Public Information Officer (PIO) provides public and media information regarding the City’s disaster response, mitigation, and recovery efforts.

Expansion and Improvement: Continue to use PIOs to promote awareness of this Hazard Mitigation Plan and activities associated with individual mitigation projects as they are implemented.

Department City of Hercules City Manager’s Office
Information Technology and Geographic Information System Information technology (IT) and Geographic Information Systems (GIS) provide the technical resources and support necessary to operate all of the applications relating to the City's information resources; respond to the service needs to all departments based on Citywide priorities as established by the City Manager; responsible for the training and effective use of all City technology computer hardware, software, and peripherals; provide internal coordination of technology efforts Citywide including substantial interface with all technology vendors to assure cost-effective, secure, and reliable technologies compatible with the long-range needs of the City; provide high-quality spatial data to City departments.

Expansion and Improvement: Consider acquiring GIS and provide training to City staff.

Department City of Hercules Information Technology Department Risk Management
Risk Management provides services to assist City departments in managing their risk of injury to employees, City property, and the public at large; purchase insurance for City departments and act in an advisory capacity with respect to workers' compensation, public liability, City property, and City contracts.

Expansion and Improvement: Continue to have the Risk Manager provide input to support the analysis of potential losses due to hazards. Update this Hazard Mitigation Plan based on current insurance values.

Department City of Hercules Human Resources Department, City of Hercules City Clerk County Flood Control and Water Conservation District
The Contra Costa County Flood Control and Water Conservation District serves an advisory capacity to the Community Development Department and the Planning Commission relative to drainage and flood control problems.

Department Contra Costa County Flood Control and Water Conservation District

5.3. Financial Resources
Table 7 contains a list of financial capabilities available to the City. These financial resources may be used to support mitigation activities based on procedures for each resource.

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Table 7. Financial Resources
General Fund
The General Fund Program funds operations and specific projects.

Expansion and Improvement: Hazard mitigation projects may be considered during the annual budgeting process for funding from the General Fund.

Administrator City of Hercules City Manager's Office; City of Hercules Finance Department City Council Administered Special Funds
Most special revenue funds were established to mitigate the impact of projects approved in certain areas of the City and most funds have been intended for uses that will benefit the quality of life for the communities in which the project is approved and special revenue funds originated.

Expansion and Improvement: Focus Administered Special Funds on projects that provide mitigation to natural hazards.

Administrator City of Hercules City Council
National Pollutant Discharge Elimination System
The National Pollutant Discharge Elimination System (NPDES) is a joint effort of the Planning, Engineering, and Public Works departments through the Contra Costa County Clean Water Program. Since 1993, the City has worked with Contra Costa County Flood Control and Water Conservation District, and 15 other cities within the County to meet federal mandates for minimizing pollutants in stormwater runoff. This revenue is used to fund its pro-rated share of the Clean Water Program’s staffing, overhead costs, and local level activities necessary to comply with the joint Municipal Regional Permit (MRP) provisions.

Expansion and Improvement: Where permissible, the NPDES Fund may be considered during the annual budgeting process for funding mitigation projects.

Administrator City of Hercules Public Works Department
Community Development Block Grant
The Community Development Block Grant (CDBG) Program provides funding for eligible senior activities such as in-home care, art classes, counseling, and home-delivered meals. The United States Department of Housing and Urban Development (HUD) also provides Disaster Recovery Assistance in the form of flexible grants to help cities, counties, and states recover from Presidentially Declared Di sasters, especially in low -income areas, subject to the availability of supplemental appropriations.

Expansion and Improvement: Where applicable, CDBG should be used to fund mitigation projects that enhance the resiliency of low income and underserved communities.

Administrator United States Department of Housing and Urban Development, City of Hercules Community Development Department
Hazard Mitigation Grant Program
The Hazard Mitigation Grant Program (HMPG) provides support for post-disaster mitigation plans and projects.

Expansion and Improvement: Train staff on notice of intent (NOI) procedures and track opportunities on the Cal OES mitigation website to initiate applications for grant funding.

Administrator Federal Emergency Management Agency , City of Hercules Community Development Department
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City of Hercules Annex 15
Building Resilient Infrastructure and Communities
Building Resilient Infrastructure and Communities (BRIC) provides support for pre-disaster mitigation plans and projects.

Expansion and Improvement: Train staff on notice of intent (NOI) procedures and track opportunities on the Cal OES mitigation website to initiate applications for grant funding.

Administrator Federal Emergency Management Agency , City of Hercules Community Development Department
Flood Mitigation Assistance Grant Program
The Flood Mitigation Assistance (FMA) Grant Program mitigates structures and infrastructure with repetitive losses.

Expansion and Improvement: Train staff on notice of intent (NOI) procedures and track opportunities on the California OES mitigation website to initiate applications for grant funding.

Administrator Federal Emergency Management Agency , City of Hercules Community Development Department

5.4. Education and Outreach Capabilities
Table 8 lists the City's financial and public outreach capabilities. These capabilities include fire safety programs, hazard awareness campaigns, public information, and communications offices. Education and outreach capabilities can be used to inform the public about current and potential mitigation activities.

Table 8. Education and Outreach Resources
City Emergency/Disaster Readiness Website
https://www.herculesca.gov/government/police/emergency-preparedness The City’s Police Department website has educational material on numerous programs, including making an emergency plan, stocking supplies, staying informed, and getting involved in community preparedness programs.

Expansion and Improvement: Provide links to the City and County websites. Post material on social media accounts that provide a link to the appropriate FEMA website page.

Lead Organization City of Hercules Police Department
City Social Media Accounts
Facebook: https://www.facebook.com/cityofhercules/
X (formerly Twitter): https://twitter.com/Hercules_PD/
Instagram: https://www.instagram.com/hercules_pd/
The City uses its social media accounts to post information to collect input on updating this Hazard Mitigation Plan. These social media accounts can have links to other City webpages that provide details on mitigation projects and activities. They can also provide information and links to County, State and Federal emergency preparedness sites that provide information on individual and family preparedness.

Expansion and Improvement: Develop a comprehensive program to utilize social media to reach out to communities in the City to provide information on mitigation activities. Conduct an annual survey to solicit input.

Provide information and conduct the survey in English and Spanish.

Lead Organization City of Hercules City Manager’s Office 42 2024 Hazard Mitigation Plan
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City of Hercules Annex 16
County Public Safety and Emergency Information
https://www.contracosta.ca.gov/5435/Public-Safety-Emergency-Info Provides resources and links for public safety and emergency information in Contra Costa County.

Expansion and Improvement: Provide additional links to other organizations such as FEMA and PG&E.

Lead Organization Contra Costa County Office of Emergency Services County Community Emergency Response Team Coalition
The CERT Program is a 20-hour all risk, all hazard training offered by the County’s Fire Department. This valuable course is designed to help you protect yourself, your family, your neighbors, and your neighborhood before, during, and after an emergency.

Expansion and Improvement: Conduct coordinated training and exercises with all County CERTs to improve interoperability.

Lead Organization Contra Costa County Cities Citizen Corps Community Warning System
The Community Warning System (CWS) can alert residents and businesses within Contra Costa County that are impacted by or are in danger of being impacted by an emergency. The CWS message will include basic information about the incident and what specific protective actions (e.g., shelter in place, lockdown, evacuate, avoid the area) are necessary for life safety and health.

Expansion and Improvement: Coordinate community evacuation drills using the CWS to implement the exercise. Conduct post exercise information fairs at evacuation collection points.

Lead Organization Contra Costa County Office of the Sheriff

6. HAZARD MITIGATION PLAN INTEGRATION
The information on hazards, risk, vulnerability, and mitigation contained in this Hazard Mitigation Plan is based on the best available data at the time of the Plan update. Plan integration consists of the incorporation of hazard mitigation into other relevant planning mechanisms (e.g., general planning and capital improvement planning). It includes the integration of natural hazard information and mitigation policies, principles, and actions into local planning mechanisms and vice versa. Additionally, plan integration is achieved though the involvement of key staff and community officials in collaborative hazard mitigation planning. This section describes the City’s process for integrating information from this Hazard Mitigation Plan into other planning mechanisms.

6.1. Past Plan Integration
In the performance period since the adoption of the previous Hazard Mitigation Plan, City of Hercules made progress on integrating components of the hazard mitigation strategy (e.g., goals, objectives, and actions) into the planning initiatives listed in Table 9.

Table 9. Past Plan Integration
Planning Initiative Description
Capital Improvement Plan
The Capital Improvement Plan should continue to utilize flexibility to incorporate mitigation measures in planned projects and the project evaluation criteria which includes public health and safety, regulatory compliance, and grant funding requirements.
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City of Hercules Annex 17
Planning Initiative Description
City General Plan
The Hazard Mitigation Plan is utilized to identify new information that was not available during the previous revision of the Safety Element, relating to hazards (i.e., flood and fire), and climate adaptation and resiliency strategies.

Emergency Operations Plan This Hazard Mitigation Plan is currently used as an essential tool to update the City EOP.

County Climate Action Plan
The strategies and actions in the County Climate Action Plan (CAP) integrate with the Hazard Mitigation Plan. For example, where possible, CAP and Hazard Mitigation Plan update cycles should be coordinated to ensure plan alignment of climate mitigation efforts.

6.2. Potential Future Integration
As the Hazard Mitigation Plan is implemented, the City of Hercules will use information from the Plan as the best available science and data on hazards. The capability assessment presented in Section 5 of this Annex identifies codes, plans, and programs that provide opportunities for integration. The Citywide and local action plans developed for this Hazard Mitigation Plan are related to plan integration. The capability assessment identified plans and programs, listed in Table 10 , that do not currently integrate goals and recommendations of this Plan but provide opportunities to do so in the future.

Table 10. Potential Future Integration
Planning Initiative Description
City Code
Mitigation actions and the hazard risk assessment in this Hazard Mitigation Plan can inform updates and revisions to the City Code.

The Public Safety (Title 3), Sanitation and Health (Title 5), and Land Use (Title 10) codes, and Building Regulations (Title 9) will be reviewed based on development trends in identified hazards and mitigation measures that can make them more effective at preventing losses. Additionally, mitigation can be integrated into future Zoning Code (Title 13) updates to inform appropriate use of property within the City. Portions of this Plan will be reviewed to consider any future improvements to the Code, if appropriate.

City General Plan
This Hazard Mitigation Plan will be incorporated in the General Plan Safety Element. The opportunity to incorporate additional hazard mitigation and abatement measures will be contemplated for inclusion into the updated General Plan.

The Safety Element will be revised, and this Hazard Mitigation Plan will be utilized to identify new information that was not available during the previous revision of the Safety Element, relating to hazards (i.e., flood and fire), and climate adaptation and resiliency strategies.

City Climate Action Plan
The City is in the process of considering the development of a City Climate Action Plan (CAP). The City will integrate the CAP with this Hazard Mitigation Plan.

Emergency Operations Plan
This Hazard Mitigation Plan will remain an essential tool to update the City EOP. The latest Hazard Mitigation Plan hazards descriptions will be included.

Mitigation actions that are preparedness and response in nature will be analyzed for applicability and for inclusion in the description of EOP processes and procedures.
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City of Hercules Annex 18
Planning Initiative Description
Sewer System Management
Plan
Portions of this Hazard Mitigation Plan with the associated mapping will be considered for inclusion in the next Sewer System Management Plan update.

The City conveys wastewater, but treatment is provided by the Hercules– Pinole Joint Powers Authority (JPA) Sanitary Wastewater treatment plant. The 2019 Sewer System Management Plan provides an inventory of the City’s sewer infrastructure and response procedures for first responders, recovery, and cleanup in the case of overflow or backups.

Stormwater Control Plan
Mitigation actions in this Hazard Mitigation Plan can inform updates and revisions to the Stormwater Control Plan (SCP). On the other hand, watershed protection processes are a useful source of information for developing future mitigation actions. This Hazard Mitigation Plan should be aligned with the SCP.

Capital Improvement Plan
The City will continue to ensure consistency between this Hazard Mitigation Plan and future updates of the Capital Improvement Plan. The Hazard Mitigation Plan may identify new possible funding sources for capital improvement projects and may result in modifications to proposed projects based on results of the risk assessment.

The City’s Local Planning Team will identify all relevant planning initiatives that are scheduled to be updated in the next year and during the annual update process of the Hazard Mitigation Plan. Additionally, opportunities to integrate key elements of the Hazard Mitigation Plan, specifically any relevant strategies, into the planning initiatives will be identified by the Local Planning Team. Mitigation actions were identified to promote plan integration in future revisions of this Plan.

7. SIGNIFICANT HAZARD PAST EVENTS
A complete risk assessment, including past incidents, for each identified hazard of concern can be found in Volume 1 (Planning Area-wide Elements) of this Plan. Table 11 provides information on significant hazard events that uniquely impacted the City of Hercules.

Table 11. Significant Past Events
Date Event Type Description
2023 Landslide A small slippage during rain events in Lupine Road (open space). No damage assessment estimates are available.
2011 Landslide
A landslide on Carson Street caused limited damage to three (3) residential structures. No damage assessment estimates are available.
2006 Landslide
A landslide on Carson Street caused limited damage to two (2) residential structures. No damage assessment estimates are available.
2000 Landslide
A landslide on Carson Street caused limited damage to two (2) residential structures. No damage assessment estimates are available.
1989 Earthquake
A few buildings in the City of Hercules experienced some structural damage as a result of the Loma Prieta Earthquake.

Approximately $25 Million in damages were reported for
Contra Costa County.
1983 Flooding Refugio Creek flooded. No damage assessment estimates are available.
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City of Hercules Annex 19

8. NATIONAL FLOOD INSURANCE PROGRAM
The City of Hercules is a member of the National Flood Insurance Program (NFIP) but has chosen to not participate in the NFIP’s Community Rating System (CRS). The City’s NFIP participation information is listed in Table 12.

Table 12. NFIP Participation Information
CID Community
Name
NFIP
Participation
Date
Current
Effective
FIRM Date
CRS Entry
Date
CRS
Current
Effective
Date
CRS
Class
060434 City of Hercules 3/26/1976 3/21/2017 N/A N/A N/A

8.1. Floodplain Manager
As an NFIP participating jurisdiction, the City of Hercules has a designated Floodplain Manager that is charged with enforcing floodplain regulati ons, rou tinely monitoring the floodplains, and providing community assistance such as encouraging owners to maintain flood insurance. The City’s Floodplain Manager information is listed in Table 13.

Table 13. Floodplain Manager
Jurisdiction Department Name Title Phone Number
City of Hercules Public Works Mike Roberts Public Works Director (510) 799-8200

8.2. Participation Activities
The City of Hercules NFIP participation activities over the last five (5) years include the following:

• Provides the following services – permit review, GIS, inspections, and engineering capability. • The City educates private owners and other stakeholders about the importance of flood insurance through public outreach events, workshops, and/or seminars. • Enforces local floodplain regulations and monitors compliance. • Floodplain management regulations meet or exceed FEMA or State minimum requirements.

8.2.1. Substantial Damage
Substantial damage means damage of any origin sustained by a structure by which the cost of restoring the structure to its previously damaged condition would equal or exceed 50% of the market value of the structure before the damage occurred. (Municipal Code Title 10, Chapter 7)

8.2.2. Substantial Improvement
Substantial improvement means any reconstruction, rehabilitation, addition, or other improvement of a structure, the cost of which equals or exceeds 50% of the market value of the structure before the “start of construction” of the improvement. This term includes structures which have incurred substantial damage, regardless of the actual repair work performed. The term does not, however, include either:

• Any project for improvement of a structure to correct existing violations or state or local health, sanitary, or safety code specifications which have been identified by the local code enforcement official and which are the minimum necessary to assure safe living conditions. 46 2024 Hazard Mitigation Plan
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City of Hercules Annex 20
• Any alteration of a historic structure, provided that the alteration will not preclude the structure’s continued designation as a historic structure. (Municipal Code Title 10, Chapter 7)

8.3. Repetitive Loss and Severe Repetitive Loss Properties The Federal Emergency Management Agency (FEMA) defines a Repetitive Loss property as an NFIP insured structure with two (2) or more claims of more than $1,000 each within any rolling 10-year period, since 1978.2

A Severe Repetitive Loss property is defined by FEMA as any NFIP insured structure for which either of the following is true when at least two (2) of the claims are within 10 years of each other (claims made within 10 days will be counted as one (1) claim):
3 • That has incurred flood related damage for which four (4) or more separate claims payments have been made, with the amount of each claim (including buildings and contents payments) exceeding $5,000, and with the cumulative amount of such claims exceeding $20,000. • For which at least two (2) separate claims payments (building payments only) have been made under such coverage, with the cumulative amount of such claims exceeding the market value of the building.

Repetitive loss records from the City of Hercules are listed in Table 14.

Table 14. Repetitive Loss Properties
Jurisdiction Repetitive Loss
Properties
Severe Repetitive
Loss Properties Mitigated Properties
City of Hercules 0 0 0

9. H AZARD VULNERABILITY AND IMPACT ASSESSMENT
Exposure and vulnerability to certain hazards affect the entire County and others are geographically defined. Although the entire County may be vulnerable to these hazards, their impacts may vary based on existing community conditions (e.g., underserved, or functional access needs populations may be more susceptible based on certain conditions, vulnerabilities, or needs).

The Local Planning Team identified unique vulnerabilities and impacts to the following natural hazards, based on the hazards profiled in Volume 1 (Planning Area-wide Elements).

• Earthquake
• Landslide
• Wildfire

It was determined that the planning area did not have unique vulnerabilities and impacts to the following natural hazards; rather, its vulnerability and impacts are consistent with those experienced throughout the County.

2 Federal Emergency Management Agency. (2020). Repetitive Loss Structure. Retrieved from https://www.fema.gov/node/405233.
3 Federal Emergency Management Agency, National Flood Insurance Program. (2022). Flood Insurance Manual:

Risk Rating 2.0: Equity in Action Edition. Retrieved from https://www.fema.gov/sites/default/files/documents/fema_nfip-flood-insurance-full-manual_102022.pdf. 47 2024 Hazard Mitigation Plan
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City of Hercules Annex 21

• Climate Change
• Dam and Levee Failure
• Drought
• Flood (riverine/creek, urban/flash flood)
• Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado)
• Sea Level Rise
• Tsunami

Note: Severe weather and flooding are profiled as the two (2) hazards. However, in an effort to have a more thorough risk assessment, the sub hazards (i.e., heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado, riverine/creek flooding, and urban/flash flooding) were ranked individually. The hazard risk assessment methodology can be found in Appendix C of this Annex.

Table 15 provides information on several key vulnerabilities and impacts for the City of Hercules and only addresses the hazards that are relevant and unique to the jurisdiction. A complete risk assessment for each identified hazard of concern is in Volume 1 (Planning Area-wide Elements) of this Plan. Hazard mapping can be found in Appendix A of this Annex.

Table 15. Hazard Vulnerability and Impact Assessment
Hazards Vulnerabilities and Impacts
Climate Change
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to climate change; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Dam and Levee Failure
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to dam and levee failures ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Drought
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to droughts ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County. 48 2024 Hazard Mitigation Plan
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City of Hercules Annex 22
Hazards Vulnerabilities and Impacts
Earthquake
There are 8,284 buildings in the planning area, with a total replacement value of $4.178 Billion. Since all structures in the planning area are susceptible to earthquake impacts to varying degrees, this represents the property exposure to seismic events. There are approximately 1,555 buildings on moderate to very high liquefiable soils in Hercules, or about 19% of the total building stock, on these soils.

The following major roads in the planning area intersect moderate to very high liquefiable soils and thus are exposed to earthquakes:

• Interstate 80
• State Highway 4
• John Muir Parkway

In the event of an earthquake, the City’s underserved population (e.g., low income households, households in poverty ), will potentially have fewer resources to help with recovery activities (e.g., fewer financial resources , may not have insurance) . Additionally, the underserved population may experience barriers to access post-disaster aid. Furthermore, the population with limited or no access to lifelines ( e.g., transportation, modern communication) are less likely to receive emergency warnings or be able to evacuate in a timely manner.

Flood
(urban/flash flood, riverine/creek)
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to floods; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Landslides
Numerous shallow landslides of various sizes are present in Hercules, particularly in the southeastern part of the City. The estimated population living in the “moderate landslides” risk area is 10,450, 8,885 in the “high landslide” risk area, and in 12 in the “very high landslide” risk area. The total population exposed to moderate, high, and very high landslide areas is 19,347.

In the event of a landslide, the underserved population may have fewer financial resources to proactively protect their households and property or to rebuild after a landslide event.

Sea Level Rise
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to sea level rise; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Severe Weather
(heavy rainfall, severe
thunderstorms, strong
winds/damaging winds, heat
wave/extreme heat, tornado)
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to severe weather; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Tsunami
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to tsunamis ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Wildfire
The eastern portion of the City may be vulnerable to increased wildfire activity due to climate change and other factors.

The City’s population with pre- existing conditions (e.g., asthma, respiratory illnesses), the elderly, and children (under 10 years old) may experience health issues related to smoke from wildfires. Additionally, the ability to evacuate in the event of a wildfire is more challenging for the elderly, individuals with access and functional needs, and those without access to transportation (e.g., vehicle at home) and modern communication (e.g., emergency notifications may not be received in a timely manner).
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City of Hercules Annex 23
Hazards Vulnerabilities and Impacts
Active Shooter Incidents
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to active shooter incidents ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Cybersecurity Threats
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to cybersecurity threats ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Hazardous Materials
Incidents
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to hazardous materials incidents; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Terrorism (Weapons of
Mass Destruction)
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to terrorism ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

Utility Interruptions
The Local Planning Team determined that the City does not have unique vulnerabilities and impacts to utility interruptions ; rather, the City’s vulnerability and impacts are consistent with those experienced throughout the County.

The City evaluated whether vulnerability and impact in hazard prone areas had increased, decreased, or remained the same for each natural hazard identified in this Hazard Mitigation Plan. Climate change, changes in population, infrastructure expansion, and economic shifts that can affect vulnerability were considered. For example, if planned development is in an identified hazard areas or is not built to the updated building codes, it may increase the community’s vulnerability to future hazards and disasters.

On the other hand, if development occurred with mitigation practices in place, the vulnerability may have remained the same or decreased. Additionally, shifting demographics (e.g., underserved population) were taken into consideration.

Table 16 outlines if climate change has increased or decreased the City’s vulnerability (i.e., exposure) and impact to each natural hazard over the past five (5) years, and the effect of climate change in the future probability of occurrence and impacts from each natural hazard.

Table 16. Climate Change Current and Future Vulnerability and Impact Hazard Vulnerability and Impact
Current Vulnerability and Impact
Climate Change Increased
Dam and Levee Failure Remained the Same
Drought Remained the Same
Earthquake Remained the Same
Flood (urban/flash flood, riverine/creek) Remained the Same Landslide Remained the Same
Sea Level Rise Remained the Same
Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado) Remained the Same Tsunami Remained the Same
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City of Hercules Annex 24
Hazard Vulnerability and Impact
Wildfire Remained the Same
Future Vulnerability and Impact
Climate Change Increase
Dam and Levee Failure No Change is Anticipated
Drought No Change is Anticipated
Earthquake No Change is Anticipated
Flood (urban/flash flood, riverine/creek) No Change is Anticipated Landslide No Change is Anticipated
Sea Level Rise No Change is Anticipated
Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado) No Change is Anticipated Tsunami No Change is Anticipated
Wildfire No Change is Anticipated

Table 17 outlines if changes in population within the City over the past five (5) years have increased or decreased the vulnerability (i.e., exposure) and impact to these natural hazards, and the anticipated effects changes in population may have on the future probability of occurrence and impacts from these natural hazards.

Table 17. Changes in Population Current and Future Vulnerability and Impact Hazard Vulnerability and Impact
Current Vulnerability and Impact
Climate Change Remained the Same
Dam and Levee Failure Remained the Same
Drought Remained the Same
Earthquake Remained the Same
Flood (urban/flash flood, riverine/creek) Remained the Same Landslide Remained the Same
Sea Level Rise Remained the Same
Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado) Remained the Same Tsunami Remained the Same
Wildfire Remained the Same
Future Vulnerability and Impact
Climate Change No Change is Anticipated
Dam and Levee Failure No Change is Anticipated
Drought No Change is Anticipated
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City of Hercules Annex 25
Hazard Vulnerability and Impact
Earthquake No Change is Anticipated
Flood (urban/flash flood, riverine/creek) No Change is Anticipated Landslide No Change is Anticipated
Sea Level Rise No Change is Anticipated
Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado) No Change is Anticipated Tsunami No Change is Anticipated
Wildfire No Change is Anticipated

Table 18 outlines if development over the past five (5) years has increased or decreased the jurisdiction’s vulnerability (i.e., exposure) and impact to these natural hazards, and the anticipated effects changes in development may have on the future probability of occurrence and impacts from these natural hazards.

Table 18. Changes in Development Current and Future Vulnerability and Impact Hazard Vulnerability and Impact
Current Vulnerability and Impact
Climate Change Remained the Same
Dam and Levee Failure Remained the Same
Drought Remained the Same
Earthquake Remained the Same
Flood (urban/flash flood, riverine/creek) Remained the Same Landslide Remained the Same
Sea Level Rise Remained the Same
Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado) Remained the Same Tsunami Remained the Same
Wildfire Remained the Same
Future Vulnerability and Impact
Climate Change No Change is Anticipated
Dam and Levee Failure No Change is Anticipated
Drought No Change is Anticipated
Earthquake No Change is Anticipated
Flood (urban/flash flood, riverine/creek) No Change is Anticipated Landslide No Change is Anticipated
Sea Level Rise No Change is Anticipated
Severe Weather (heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, tornado) No Change is Anticipated Tsunami No Change is Anticipated
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City of Hercules Annex 26
Hazard Vulnerability and Impact
Wildfire No Change is Anticipated

The City does not anticipate future major assets may be exposed or vulnerable to any of the natural hazards identified in this Hazard Mitigation Plan. Any new assets (e.g., new construction in hazard prone areas) will be constructed to adhere to the latest building codes and standards, and mitigation to protect them from identified and anticipated hazards, especially those that are expected to increase due to climate change.

Refer to Appendix C and Appendix D of this Annex for the hazard risk assessment methodology and jurisdiction specific details, which includes the vulnerability and impacts to population and life safety, underserved/equity, property damage, future development, and climate change.

9.1. FEMA National Risk Index
In the National Risk Index (NRI), risk is defined as the potential for negative impacts as a result of a natural hazard. The Risk Index is based on three (3) components – a natural hazards component (Expected Annual Loss), a consequence enhancing component (Social Vulnerability), and a consequence reduction component (Community Resilience). Using these components, the composite and hazard type Risk Index values are calculated for each community (county and Census Tract). Risk Index values form an absolute basis for measuring Risk within the NRI and are used to generate Risk Index percentiles and ratings across communities.
4 Table 19 illustrates the Risk Index rating and score
for the City of Hercules.

Table 19. Risk Index Score (FEMA National Risk Index)
Jurisdiction Rating Score
City of Hercules Very High 84.3
Risk Index scores are calculated using an equation that combines scores for Expected Annual Loss due to natural hazards, Social Vulnerability and Community Resilience (Expected Annual Loss x Social Vulnerability / Community Resilience = Risk Index).

9.1.1. Expected Annual Loss
The FEMA NRI Expected Annual Loss (EAL), the natural hazards component of the NRI, represents the average economic loss in dollars resulting from natural hazards each year. It is calculated for each hazard type and quantifies loss for relevant consequence types – buildings, people, and agriculture. The EAL score and rating represent a community's relative level of expected losses each year when compared to all other communities at the same level. Since the score is associated to a community’s risk; the higher EAL score results in a higher Risk Index score.
5 Table 20 illustrates each hazard EAL for the City of
Hercules.

4 Federal Emergency Management Agency. (2023). Determining Risk. Retrieved from https://hazards.fema.gov/nri/determining-risk.
5 Federal Emergency Management Agency. (2023). Expected Annual Loss. Retrieved from https://hazards.fema.gov/nri/expected-annual-loss.
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Table 20. Expected Annual Loss (FEMA National Risk Index) Hazard Population
Equivalence
Building
Value
Agriculture
Value
Total
Expected
Annual
Loss
Expected
Annual
Loss
Score
Rating
Coastal Flooding
(Sea Level Rise) $6 $830 n/a $836 32.2 Relatively
Low
Drought n/a n/a $50 $50 15.6 Very Low
Earthquake $563,541 $1.3 Million n/a $1.9 Million 95.9 Very High Hail
(Severe Weather) $29 $101 $0 $130 19.4 Very Low
Heat Wave
(Severe Weather) $12,235 $2 $0 $12,237 57.5 Relatively
Moderate
Landslide $373 $2,960 n/a $3,334 67.3 Relatively
High
Riverine Flooding
(Flood) $18,183 $13,463 $3 $31,649 52.6 Relatively
Moderate
Strong Winds
(Severe Weather) $60 $18 $0 $78 5.1 Very Low
Tornado
(Severe Weather) $1,138 $2,427 $0 $3,565 10.6 Very Low
Tsunami $0 $14 n/a $14 18.4 Very Low
Wildfire $735 $42,614 $0 $43,349 61.0 Relatively
High
Expected annual loss scores are calculated utilizing an equation that combines values for exposure, annualized frequency, and historic loss ratios (Expected Annual Loss = Exposure x Annualized Frequency x Historic Loss Ratio).

An EAL score and rating is calculated independently for each consequence type (i.e., buildings, population, and agriculture) for each county and Census Tract. The population EAL is measured in fatalities and injuries while the building and agriculture values are measured in dollars. However, for consistency in the unit of measurement, the population EAL was monetized into population equivalence using a value of statistical life (VSL) approach where each fatality or 10 injuries is treated as $11.6 Million of economic loss.

9.1.2. Social Vulnerability
Social vulnerability, the consequence enhancing risk component of the NRI, measures the susceptibility of social groups to the adverse impacts of natural hazards, including disproportionate death, injury, loss, or disruption of livelihood. The Social Vulnerability score and rating represent the relative level of a community’s social vulnerability compared to all other communities at the same level. A higher Social Vulnerability score results in a higher Risk Index score.6 Table 21 illustrates the Social Vulnerability rating and score for the City of Hercules.

6 Federal Emergency Management Agency. (2023). Social Vulnerability. Retrieved from https://hazards.fema.gov/nri/social-vulnerability.
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Table 21. Social Vulnerability (FEMA National Risk Index) Jurisdiction Rating Score
City of Hercules Relatively Moderate 47.3
Social Vulnerability is measured using the Social Vulnerability Index (SoVI) published by the University of South Carolina’s Hazards and Vulnerability Research Institute (HVRI).

9.1.3. Community Resilience
Community resilience, the consequence reduction risk component, measures the ability of a community to prepare for anticipated natural hazards, adapt to changing conditions, and withstand and recover rapidly from disruptions. The Community Resilience score and rating represent the relative level of a community’s resilience compared to all other communities at the same level. Since the score is inversely proportional to a community’s risk; the higher Community Resilience score results in a lower Risk Index score.7 Table 22 illustrates the Community Resilience rating and score for the City of Hercules.

Table 22. Community Resilience (FEMA National Risk Index) Jurisdiction Rating Score
City of Hercules Relatively High 66.4
Community Resilience is measured using the Baseline Resilience Indicators for Communities (HVRI BRIC) published by the University of South Carolina's Hazards and Vulnerability Research Institute (HVRI).

9.1.4. Annualized Frequency
Annualized frequency is defined as the expected frequency or probability of a hazard occurrence per year. It is a natural hazard incidence factor for Expected Annual Loss, the natural hazards component of the National Risk Index. A higher annualized frequency value results in higher Expected Annual Loss and Risk Index scores. The annualized frequency is derived from either the number of recorded hazard occurrences each year over a given period or the modeled probability of a hazard occurrence each year (e.g., earthquake).
8 Table 23 outlines the annualized frequency for each hazard, based on FEMA NRI data, for the City of Hercules.

Table 23. Hazard Annualized Frequency (FEMA National Risk Index) Hazard Period of Record Events on Record Annualized Frequency Coastal Flooding
(Sea Level Rise) Various datasets n/a 1.0 events per year Drought 22 years 1,003 46.0 events per year
Earthquake 2021 dataset n/a 0.011% chance per year
Hail
(Severe Weather) 34 years 1 0.0 events per year
Heat Wave
(Severe Weather) 16 years 27 1.9 events per year
Landslide 12 years 0 0.0 events per year

7 Federal Emergency Management Agency. (2023). Community Resilience. Retrieved from https://hazards.fema.gov/nri/community-resilience.
8 Federal Emergency Management Agency. (2023). Annualized Frequency. Retrieved from https://hazards.fema.gov/nri/annualized-frequency.
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of Hercules Annex 29
Hazard Period of Record Events on Record Annualized Frequency Riverine Flooding
(Flood) 24 years 31 1.3 events per year
Strong Winds
(Severe Weather) 34 years 2 0.0 events per year
Tornado
(Severe Weather) 72 years 0 0.0 events per year
Tsunami 222 years 0 0.0 events per year
Wildfire 2021 dataset n/a 0.0% events per year

10. HAZARD RISK RANKING
Table 24 presents the local hazard ranking for the City of Hercules of all hazards of concern listed in Volume 1 (Planning Area-wide Elements) of this Plan. This ranking summarizes how hazards vary for this jurisdiction. As described in detail in Volume 1 (Planning Area-w ide Elements) and Appendix C of this Annex, the ranking process involves an assessment of the likelihood of occurrence
for each hazard, along with its potential impacts on people, property, and the economy. For further details on how the probability, extent, vulnerability, and impact factors in Table 24 were calculated, please refer to A ppendix D of this Annex.

It
is important to note that the sub hazards for severe weather hazards (i.e., heavy rainfall, severe thunderstorms, strong winds/damaging winds, heat wave/extreme heat, and tornado) and flood hazards (i.e., riverine/creek flooding and urban/flash flooding) were individually ranked in the hazard risk ranking; however, flood and severe weather are each considered as the main hazard throughout this Annex and Volume 1 (Planning Area-wide Elements).

Table 24. Hazard Risk Ranking
Hazard Event Probability
Factor
Sum of
Weighted
Extent
Factors
Sum of
Weighted
Vulnerability
Factors
Sum of
Weighted
Impact
Factors
Consequence
Score
Total Risk Score
(Probability x
Consequence)
Earthquake 2 18 17 36 71 68
Landslide 3 9 9 22 40 59
Heavy Rainfall
(Severe Weather) 3 9 14 15 38 56
Flood
(Urban/Flash Flood) 2 15 12 29 56 55
Wildfire 2 12 12 31 55 54
Strong Winds/
Damaging Winds
(Severe Weather)
3 9 11 16 36 54
Severe Thunderstorm
(Severe Weather) 3 6 16 14 36 54
Utility Interruptions 3 9 7 18 34 51
Heat Wave/Extreme
Heat 3 9 10 15 34 51
Drought 2 18 12 20 50 50
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City of Hercules Annex 30
Hazard Event Probability
Factor
Sum of
Weighted
Extent
Factors
Sum of
Weighted
Vulnerability
Factors
Sum of
Weighted
Impact
Factors
Consequence
Score
Total Risk Score
(Probability x
Consequence)
Flood
(Riverine/Creek) 2 12 7 29 48 48
Hazardous Materials
Incidents 2 15 9 16 40 41
Climate Change 2 9 12 15 36 38
Sea Level Rise 2 12 6 17 35 37
Cybersecurity
Threats 2 12 7 13 32 34
Active Shooter
Incidents 2 9 5 15 29 32
Terrorism
(Weapons of Mass
Destruction)
1 18 11 27 56 31
Dam and Levee
Failure 1 18 6 31 55 30
Tsunami 1 6 6 22 34 20
Tornado
(Severe Weather) 1 6 6 14 26 16
Consequence: Sum of all weighted factors.

Extent: Sum of the weighted Extent factors.

Vulnerability: Sum of the weighted Vulnerability factors.

Impact: Sum of the weighted Impact factors.

Total Risk Score* = Probability x Consequence
* Normalized to 100
Total Risk Score Legend
Classification Probability
Factor Extent Vulnerability Impact Consequence
Score
Total Risk
Score
Low (L) 1 0 – 6 0 – 6 0 – 12 0 – 24 0 – 24
Medium (M) 2 7 – 12 7 – 12 13 – 26 25 – 50 25 – 54
High (H) 3 13 – 18 13 – 18 27 – 39 51 – 75 55 and above The legend—specifically the assignment of low, medium, and high —provides an additional means to qualitatively assess the probability factor, sum of weighted factors, and the total risk scores for each hazard. The Consequence Score represents the sum of the Extent, Vulnerability, and Impact Factors. The Total Risk Score is a measure of Probability and Consequence.

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11. MITIGATION ACTIONS
This section includes the mitigation actions that were developed to address identified risks and vulnerabilities to hazards identified in this Plan. This Plan serves only to recommend mitigation measures based on the potential for risk reduction and available funding. Implementation of mitigation actions is dependent on risk reduction priorities, feasibility, and available funding. It is also dependent on the cooperation and support of the jurisdiction and/or department responsible for each action item.

The City of Hercules agreed upon 17 mitigation actions that apply to the jurisdiction’s properties where they have jurisdictional responsibility and authority. One (1) mitigation action was deleted/no longer needed. A summary of the City’s mitigation actions status is listed in Table 25.

Table 25. City of Hercules Mitigation Actions Summary
Status Mitigation Action Total
Ongoing 9
In Progress/In Work 1
Not Started 6
Delayed/Deferred 1
New 0
TOTAL 17
Completed 0
Deleted/No Longer Needed 1
Mitigation Actions per Hazard
Climate Change 9 Landslide 12
Dam and Levee Failure 5 Sea Level Rise 10
Drought 7 Severe Weather 16
Earthquake 10 Tsunami 8
Flood 12 Wildfire 12

These shared actions, some of which address all hazards, help to meet the following requirements:

• Does the Plan identify and analyze a comprehensive range of specific mitigation actions and projects for each jurisdiction being considered to reduce the effects of hazards, with emphasis on new and existing buildings and infrastructure?
• Does the Plan include one (1) or more action(s) per jurisdiction for each hazard identified within the risk assessment?

A detailed explanation of the Mitigation Strategy can be found in Chapter 5 of Volume 1 (Planning Area- wide Elements).

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of Hercules Annex 32
Mitigation
Action
Where appropriate, support retrofitting or relocation of structures in high hazard areas, prioritizing structures that have experienced repetitive losses.

Action Number H-1
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score Medium
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 4, 7,
11, 12, 14, 15, 17
Hazard(s) Mitigated Earthquake, Landslide, Severe Weather, Wildfire Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) High
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Long Term Estimated Cost High
Potential Funding Source HMGP, BRIC, FMA
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

N/A
Implementation Priority Medium Integration Ideas
(Optional)
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City of Hercules Annex 33
Mitigation
Action
Integrate the Hazard Mitigation Plan into other City plans, ordinances, and programs that dictate land use decisions in the community, including the General Plan and Zoning Ordinance.

Action Number H-2
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score High
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 3, 4, 5,
7, 11, 12, 14, 17, 18
Hazard(s) Mitigated
Climate Change, Dam and Levee Failure,
Drought, Earthquake, Flood, Landslide, Sea Level
Rise, Severe Weather, Tsunami, Wildfire
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Ongoing Estimated Cost Medium
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

Department Funds, Staff Funds
Implementation Priority High Integration Ideas
(Optional)

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City of Hercules Annex 34
Mitigation
Action
Actively participate in the Hazard Mitigation Plan maintenance protocols outlined in Volume 1 of the Contra Costa County Hazard Mitigation Plan.

Action Number H-3
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score High
Goal(s) / Objective(s) Addressed Goals: 1, 2, 3, 4, 5
Objectives: 3, 8,16 Hazard(s) Mitigated
Climate Change, Dam and Levee Failure,
Drought, Earthquake, Flood, Landslide, Sea Level
Rise, Severe Weather, Tsunami, Wildfire
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Low
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Ongoing Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority High Integration Ideas
(Optional)

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City of Hercules Annex 35
Mitigation
Action
Continue to maintain good standing and compliance under the National Flood Insurance Program (NFIP) through implementation of floodplain management programs that, at a minimum, meet the NFIP requirements. These include:
• Enforce the flood damage prevention ordinance.
• Participate in floodplain identification and mapping updates. • Provide public assistance/information on floodplain requirements and impacts.

Action Number H-4
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score High
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 3, 5, 6, 9,
10, 11, 15
Hazard(s) Mitigated Flood, Severe Weather
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Public Works Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Ongoing Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority High Integration Ideas
(Optional)

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City of Hercules Annex 36
Mitigation
Action
Dredge Refugio Lake & Replace Aerator Fountains. The fountains aerate the water, reducing algae and dredging will restore the lake to its original depth, as part of the City’s Stormwater Program.

Action Number H-5
Year Initiated /
Anticipated Year
of Initiation
2027 Prioritization Score Medium
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 2, 10,
17 Hazard(s) Mitigated Severe Weather
Project Status Delayed/Deferred If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Public Works Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost High
Potential Funding Source Other
If Other, you must
identify a funding source.

Landscaping & Lighting Assessment District
(LLAD) Zone 10
Please provide further
detail on Potential
Funding Source.

N/A
Implementation Priority Medium Integration Ideas
(Optional)

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City of Hercules Annex 37
Mitigation
Action
Develop and implement a program to capture perishable data after significant events (e.g. high water marks, preliminary damage estimates, damage photos) to support future mitigation efforts including the implementation and maintenance of this Hazard Mitigation Plan.

Action Number H-6
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score Low
Goal(s) / Objective(s) Addressed Goals: 1, 2, 3, 4, 5
Objectives: 6, 8, 18 Hazard(s) Mitigated Earthquake, Landslide, Severe Weather, Wildfire Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Low
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Low Integration Ideas
(Optional)

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City of Hercules Annex 38
Mitigation
Action Support Countywide initiatives identified in Volume 1 of the Contra Costa County Hazard Mitigation Plan.

Action Number H-7
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score High
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 2, 3, 4,
5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17
,18
Hazard(s) Mitigated
Climate Change, Dam and Levee Failure,
Drought, Earthquake, Flood, Landslide, Sea Level
Rise, Severe Weather, Tsunami, Wildfire
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Low
Potential Funding Source Local Budgeted Funds*
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority High Integration Ideas
(Optional)

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City of Hercules Annex 39
Mitigation
Action Explore participating in community readiness programs such as Firewise, Read Set Go, and StormReady.

Action Number H-8
Year Initiated /
Anticipated Year
of Initiation
2026 Prioritization Score Medium
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 3, 6, 9,
17 Hazard(s) Mitigated Flood, Sea Level Rise, Severe Weather, Wildfire Project Status Not Started If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Public Works Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Low
Potential Funding Source Local Budgeted Funds, HMGP,
BRIC
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Medium Integration Ideas
(Optional)

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Mitigation
Action Partner with Rodeo-Hercules Fire Protection District to form a Community Emergency Response Team (CERT).

Action Number H-9
Year Initiated /
Anticipated Year
of Initiation
2026 Prioritization Score Medium
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 2, 3, 6,
13, 16
Hazard(s) Mitigated Drought, Earthquake, Flood, Landslide, Severe Weather, Tsunami, Wildfire
Project Status Not Started If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Low
Lead Agency / Organization City of Hercules Police Department (Emergency Management)
Supporting Agency
/ Organization
(If applicable)
Rodeo-Hercules Fire Protection District
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Low
Potential Funding Source Local Budgeted Funds, Other
If Other, you must
identify a funding source. UASI
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Medium Integration Ideas
(Optional)

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Mitigation
Action
Create an accessible online GIS portal to store and share multi-agency maps and data developed throughout the development of this Hazard Mitigation Plan.

Action Number H-10
Year Initiated /
Anticipated Year
of Initiation
2026 Prioritization Score Medium
Goal(s) / Objective(s) Addressed Goals: 1, 2, 3, 4, 5
Objectives: 3, 5, 6 Hazard(s) Mitigated
Climate Change, Dam and Levee Failure,
Drought, Earthquake, Flood, Landslide, Sea Level
Rise, Severe Weather, Tsunami, Wildfire
Project Status Not Started If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Low
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Medium
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Medium Integration Ideas
(Optional)

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Mitigation
Action
Continue pursuing funding to Restore Chelsea Wetlands. The goal is to restore Chelsea Wetlands to its original tidal wetland state to reduce flooding and improve wildlife habitat.

Action Number H-11
Year Initiated /
Anticipated Year
of Initiation
N/A Prioritization Score N/A
Goal(s) / Objective(s) Addressed Goals: 1, 2, 3, 4, 5
Objectives: 17, 18 Hazard(s) Mitigated Severe Weather
Project Status Deleted/No Longer
Needed
If Deleted/No Longer
Needed, provide reason. Withdrawal of the project sponsor.

Benefits
(Loss Avoided) N/A
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration N/A Estimated Cost N/A
Potential Funding Source N/A
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

N/A
Implementation Priority N/A Integration Ideas
(Optional)

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Mitigation
Action
Consider developing a Climate Action Plan (CAP) to incorporate relevant research, and maps which might impact hazard planning and policy setting in the City of Hercules.

Action Number H-12
Year Initiated /
Anticipated Year
of Initiation
2026 Prioritization Score Low
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 3, 6, 12,
16, 17, 18
Hazard(s) Mitigated Climate Change, Earthquake, Flood, Landslide, Sea Level Rise, Severe Weather, Wildfire
Project Status Not Started If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Medium
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Low Integration Ideas
(Optional)

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Mitigation
Action
Partner with the community, non-profits, Police Department, and the Fire Protection District to conduct community trainings on emergency preparedness, and response (e.g., evacuation routes and shelters).

Action Number H-13
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score High
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 2, 3, 6,
16,
Hazard(s) Mitigated
Climate Change, Dam and Levee Failure,
Drought, Earthquake, Flood, Landslide, Sea Level
Rise, Severe Weather, Tsunami, Wildfire
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) High
Lead Agency / Organization City of Hercules Police Department (Emergency Management)
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Ongoing Estimated Cost Medium
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority High Integration Ideas
(Optional)

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Mitigation
Action
Review the Adapting to Rising Tides policy and program recommendations when updating the Housing Element and completing the next Capital Improvement Program.

Action Number H-14
Year Initiated /
Anticipated Year
of Initiation
2011 Prioritization Score High
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 4, 5, 6,
8, 10, 11, 16
Hazard(s) Mitigated Severe Weather
Project Status In Progress/In Work If Deleted/No Longer Needed, provide reason. N/A
Benefits
(Loss Avoided) Low
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Ongoing Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority High Integration Ideas
(Optional)

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Mitigation
Action
Install Green Infrastructure where feasible throughout the City in order to promote climate resiliency through the reduction of urban heat, recharging the aquifer, and reducing runoff to the floodplain.

Action Number H-15
Year Initiated /
Anticipated Year
of Initiation
2027 Prioritization Score Medium
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 4, 7,
10, 12, 13, 15, 17
Hazard(s) Mitigated Climate Change, Flood, Sea Level Rise, Severe Weather
Project Status Not Started If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) High
Lead Agency / Organization City of Hercules Public Works Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Long Term Estimated Cost High
Potential Funding Source Local Budgeted Funds, HMGP,
BRIC
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund
Implementation Priority Medium Integration Ideas
(Optional)

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Mitigation
Action Adopt and enforce updated building code provisions to reduce damage risk from natural hazards.

Action Number H-16
Year Initiated /
Anticipated Year
of Initiation
2018 or before Prioritization Score High
Goal(s) / Objective(s) Addressed Goals: 1, 2, 3, 5
Objectives: 1, 7, 11, Hazard(s) Mitigated
Climate Change, Earthquake, Flood, Landslide,
Sea Level Rise, Severe Weather, Tsunami,
Wildfire
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) High
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Short Term Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority High Integration Ideas
(Optional)

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Mitigation
Action
Partner with the Contra Costa County Department of Conservation and Development, and surrounding municipalities on grant opportunities for climate resiliency efforts.

Action Number H-17
Year Initiated /
Anticipated Year
of Initiation
2026 Prioritization Score Low
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 2, 3, 4,
8, 10, 13, 15, 15, 17,
18 Hazard(s) Mitigated Climate Change, Drought, Flood, Landslide, Sea Level Rise, Severe Weather, Tsunami, Wildfire
Project Status Not Started If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Medium
Lead Agency / Organization City of Hercules Community
Development Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Long Term Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Low Integration Ideas
(Optional)

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Mitigation
Action
Require development proposed in landslide mapped area to provide a geotechnical analysis to ensure site is buildable; and any construction requirements.

Action Number H-18
Year Initiated /
Anticipated Year
of Initiation
2021 Prioritization Score Low
Goal(s) / Objective(s) Addressed
Goals: 1, 2, 3, 4, 5
Objectives: 1, 4, 5, 6,
7, 11, 12,
Hazard(s) Mitigated Landslide
Project Status Ongoing If Deleted/No Longer
Needed, provide reason. N/A
Benefits
(Loss Avoided) Low
Lead Agency / Organization City of Hercules Public Works Department
Supporting Agency
/ Organization
(If applicable)
N/A
Additional Participating
Jurisdictions (If applicable) N/A
Project Duration Ongoing Estimated Cost Low
Potential Funding Source Local Budgeted Funds
If Other, you must
identify a funding source. N/A
Please provide further
detail on Potential
Funding Source.

General Fund (Staff Time)
Implementation Priority Low Integration Ideas
(Optional)

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APPENDIX A. HAZARD MAPS
The following hazards were mapped for the City of Hercules – earthquakes, floods, landslides, sea level rise, tsunamis, and wildfires.

• Figure 1 illustrates the liquefaction susceptibility, which helps assess potential damage from earthquakes in the City.
• Figure 2 illustrates the City of Hercules Special Flood Hazard Area (SFHZ), including each Flood Zone, and the 500- year floodplain. Flood Insurance Rate Maps (FIRMs) show the flood zones, floodplain boundaries, and Base Floor Elevation (BFE) and are used for floodplain management, flood insurance ratings, and to determine flood insurance requirements. FIRMs show areas with a 1% chance of flooding each year, commonly known as the 100- year floodplains, and are illustrated as the SFHA.
9 The 500-year floodplains show areas with a 0.2% chance of flooding each year.
• Figure 3 illustrates landslide susceptibility in the City. Landslide susceptibility maps describe the relative likelihood of future land sliding based solely on the intrinsic properties of a location or site.

There are three (3) site factors that most determine susceptibility – prior failure, rock or soil strength, and steepness of slope.10
• Figure 4 illustrates sea level rise for 2050 plus storm induced sea level rise through storm waves and surges.11
• Figure 5 illustrates the California Tsunami Hazard Areas which represent areas within the City of Hercules that could be exposed to tsunami hazards during a tsunami event. Areas in yellow are advised to evacuate immediately after an earthquake that lasts for an extended period of time or if an official evacuation notification is received. Residents and visitors are advised to evacuate on foot to a green area.
• Figure 6 illustrates that there are no California Fire Hazard Severity Zones (FHSZ) in the State Responsibility Area (SRA) within the City.

9 Federal Emergency Management Agency. (2017). Flood Insurance Study: Contra Costa County, California and Incorporated Areas. Retrieved from https://www.contracosta.ca.gov/DocumentCenter/View/77626/Volumes -I- V?bidId=.
10 California Department of Conservation. (n.d.). Landslides. Retrieved from https://www.conservation.ca.gov/cgs/landslides.
11 City of Hercules. (2021). City of Hercules General Plan. Retrieved from https://www.herculesca.gov/government/planning/general-plan. 77 2024 Hazard Mitigation Plan
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Figure 1. Liquefaction Susceptibility (Earthquake)
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Figure 2. Special Flood Hazard Area

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Figure 3. Landslide Susceptibility

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Figure 4. Sea Level Rise

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Figure 5. Tsunami Hazard Areas

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Figure 6. Fire Hazard Severity Zones

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APPENDIX B. STAKEHOLDER AND PUBLIC ENGAGEMENT
The mitigation planning process promotes awareness of hazard risks and continues the conversation about the community’s safety and resilience. A hazard mitigation plan generates additional community support when it accurately reflects the values and priorities of the community which will lead to successfully implementing the mitigation actions and projects identified in this Plan.

Federal regulations for mitigation plan approval require that stakeholders and the general public are given opportunities to be involved in the plan’s development and update process. Input from community members can strengthen the content and outcomes of the hazard mitigation plan. Furthermore, the Plan must state continued public engagement as the Plan is carried out during its lifetime. A public outreach strategy outlines what the community intends to achieve throughout the outreach efforts. Additionally, it identifies who to involve in the process, and how and when to effectively engage the community. Contra Costa County and the City of Hercules worked together to ensure that the stakeholder and public engagement was meaningful and productive. Refer to Volume 1 (Planning Area -wide Elements) for further information on how stakeholders and the general public were given opportunities to be involved throughout the planning process. However, every plan participant employed a slightly tailored engagement strategy that suits the community’s demographics, including the underserved population, and needs in addition to the lead jurisdiction’s engagement strategy.

City of Hercules stakeholders and the public were given a number of opportunities to be involved throughout the planning process. Opportunities were provided via a public survey, in person and virtual public meetings, and public engagement activities to review the Plan draft (i.e., public comment period).

The public meetings allowed the County to introduce the Plan update, identify additional hazards of concern that should be included, if any, and to provide input for the various mitigation measures intended to eliminate or reduce the negative impact to those hazards. Language translation assistance in Spanish was available in all public meetings. The public survey asked community representatives and members of the public to rate each of the hazards in terms of perceived risk. Furthermore, they were asked to rate “mitigation importance” for each of the identified hazards in the Plan. The information gathered from this survey was used to inform the hazard risk prioritization process, and to ensure the Plan adequately addressed the public’s concerns and priorities. The survey was available in English, Spanish, Tagalog, Traditional Chinese, and Simplified Chinese. A total of 26 respondents that lived in the City and nine (9) that worked in the City participated in the survey. Please refer to Volume 1 (Planning Area -wide Elements) for further information and supporting documentation of the public meetings and public survey.

How Public Input was Incorporated into the Plan
Information and feedback gained through the public survey, public meetings, and public comment period provided valuable data to validate and confirm the risk assessment findings and potential mitigation strategies. Specifically, feedback from the public offered during the public meetings offered greater insights into the public’s concerns regarding specific hazards and their impacts. The public also offered specific initiatives they felt would create greater resiliency for the City and its residents.

Survey results helped validate the hazards included in the Plan, the hazard ranking process, and areas where the County and jurisdictions could further improve outreach and education efforts. Open -ended responses, specifically regarding their experience with damages from past hazards, helped to validate hazard-specific impact data in Chapter 4 (Hazard Identification and Risk Assessment) of Volume 1 (Planning Area-wide Elements). These, and related findings, helped the County and City Core Planning Teams determine meaningful mitigation projects.

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After the public comment period ended, one (1) public feedback form was received for the City of Hercules Annex. The Local Planning Team reviewed and will implement mitigation and preparedness efforts moving forward, if deemed appropriate. However, in order to keep the Plan current after it is approved, the City will ensure that the public continues to be involved in the Plan and how it is carried out. Refer to Section B.2 of this Annex for further details on continued public engagement.

B.1. Public Comment Period
Once the draft Plan was completed, the public was given an opportunity to review and provide comments on the County Hazard Mitigation Plan, including the City of Hercules’ Annex, prior to submitting the Plan to the State and FEMA . The countywide public comment period began on April 22, 2024, and went on through May 31, 2024. Prior to the public comment period, the Contra Costa County Core Planning Team conducted a strategy meeting with all plan participants (i.e., City of Hercules ) that served as a brainstorming session and helped determine the public outreach goals and proper outreach methods for the public comment period. Subsequently, the City of Hercules Core Planning Team developed a public outreach strategy that meets the City’s unique needs of the community to engage stakeholders and the public during the public comment period. The City ensured equitable outreach by targeting Contra Costa County’s vulnerable communities, including the younger (under 18 years old) and elderly (over 65 years old) populat ion, individuals with limited English proficiency, race and ethnicity minority population, individuals with limited access to a vehicle and low income, and those with access and functional needs.

The City of Hercules Local Planning Team coordinated with its stakeholders to ensure that the public had an opportunity to learn about the Plan, mitigation actions planned for their community, and ways to get involved in the planning process. Outreach to the Hercules community involved a combination of in person, printed, and digital media starting on April 23, 2024, through the end of the public comment period on May 31, 2024. To ensure equitable outreach a calendar was created to strategize and map all events.

Public Comment Outreach Calendar
April 2024
Date Thursday, April 25th Tuesday, April 30th
Event Name Rodeo Municipal Advisory Council
Meeting Spring into Wellness Fair
Location
Rodeo Senior Center
189 Parker Avenue
Rodeo, CA 94572
Hercules Senior Center
111 Civic Drive
Hercules, CA 94547
Outreach Method Presentation to Governing Body Community Event Outreach Purpose Inform, Involve Inform
Targeted Population Citywide, Age (Elderly), Access and Functional Needs
Age (Elderly), Access and Functional
Needs, Low Income, Limited Access to a
Vehicle
Accommodations Provided After Hours In Person Outreach

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May 2024
Date Wednesday, May 8th Wednesday, May 8th
Event Name Rodeo-Hercules Fire Protection District
Board Meeting
Hercules Community Center Family
Outreach
Location
Hercules City Hall
111 Civic Drive
Hercules, CA 94547
2001 Refugio Valley Road
Hercules, CA 94547
Outreach Method Presentation to Governing Body Community Event Outreach Purpose Inform, Involve Inform
Targeted Population Citywide, Age (Elderly), Access and Functional Needs
Age (Younger), Single-Parent
Households, Low Income, Race and
Ethnic Minority
Accommodations Provided After Hours, Virtual Option In Person Outreach, After Hours

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April 25, 2024 – Rodeo Municipal Advisory Council Meeting (Partnership with Contra Costa County Office of Emergency Services and Rodeo-Hercules Fire Protection District) The Rodeo Municipal Advisory Council (MAC) Meeting was held in person, after hours (7:00 PM) on a weekday. The MAC meetings are open to the general public. During this meeting, City staff conducted a presentation on the Contra Costa County Hazard Mitigation Plan, including the City’s Annex, and provided options for the public to review and provide feedback on the Plan and Annex.

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April 30, 2024 – Spring into Wellness Fair
The Spring into Wellness Fair had vendors talk and provide information about their programs. T he City of Hercules Police Department and Rodeo-Hercules Fire Protection District (RHFPD) hosted a table to share information on the Contra Costa County Hazard Mitigation Plan, including the City’s Annex, opportunities to review and provide feedback on the Plan, and the community’s local hazards.

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May 8, 2024 – Community Center Family Outreach
The City of Hercules shared information, including flyers and a poster, on the Contra Costa County Hazard Mitigation Plan, including the City’s Annex, opportunities to review and provide feedback on the Plan, and the community’s local hazards . Information was provided to families and coaches during basketball and swimming lessons.

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May 8, 2024 – Rodeo-Hercules Fire Protection District Board Meeting (Partnership with Rodeo- Hercules Fire Protection District)
The Rodeo- Hercules Fire Protection District Board Meeting was held in person with a virtual option (Zoom), after hours (7:00 PM) on a weekday. The Board Meeting is open to the general public. During this meeting, the City and RHFPD presented the Contra Costa County Hazard Mitigation Plan, including the City’s Annex, and advised the public on opportunities to be part of the planning process by reviewing and providing feedback on the Plan and Annex.

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Printed Materials
Two (2) different types of materials were created specifically for the public comment period and the City rebranded the materials with the City logo, as seen in the outreach pictures within this Appendix. The trifold (Figure B-1) contains information on the planning process, the top three (3) hazards in the County, ways to prepare, and ways to get involved in the planning process. A full -page flyer ( Figure B-2) was created with information on the planning process, ways to get involved, and ways to prepare. Both the trifold and full-page flyer were distributed at public meetings and outreach events. Printed materials are especially helpful to communities with limited English proficiency as the materials include a visual component.

Figure B-1. Trifold

Figure B-2. Local Hazard Flyer

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Throughout the public comment period, printed materials were placed inside the following City public buildings – City Hall lobby on April 29, 2024, Hercules Senior Center on April 30, 2024, Hercules Library on May 2, 2024, and Hercules Community Center on May 8, 2024.

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Additionally, an item about the Hazard Mitigation Plan was included in the Hercules Herald (i .e., City’s Newsletter) on May 1, 2024. The monthly Newsletter provides residents with updates on recent or upcoming projects, programs, events, and initiatives.

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City Website
Announcements providing an opportunity to comment on the Contra Costa County Hazard Mitigation Plan and the City’s Annex were posted under the News and Updates section of the City website starting on April 23, 2024. The website served as a central place which allowed all residents, stakeholders, and partners in the City of Hercules to review and provide feedback on the County’s Hazard Mitigation Plan and the City’s Annex, and thus promoted more public comment. Additionally, it allowed to connect with community members who are unable to attend i n person meetings and events (e.g., individuals with limited access to a vehicle, younger population).

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Social Media Posts
Public comment period announcements were disseminated through the City’s Facebook page on May 15, 2024. Membership in the City’s social media page exceeds 1,700 consisting of residents and local business owners.

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Stakeholder Engagement
Due to the size of the Plan (the Base Plan and 40 annexes), some stakeholders would receive the same invitation a significant amount of times. For a more productive outreach and to avoid overwhelming stakeholders, Contra Costa County sent a single invitation to all the countywide stakeholders via e-mail.

However, each plan participant was required to cross -reference the countywide list and identify the stakeholders that applied specifically to their jurisdiction. Not only did this help ensure that a comprehensive list was compiled as part of the stakeholder engagement, but it assisted each plan participant identify any additional stakeholders that may have not been on the list. Table 26 outlines the stakeholders the City of Hercules identified and provided an opportunity to review and provide feedback on the draft Plan and Annex, via the countywide stakeholders e-mail.

Table 26. City of Hercules Specific Stakeholders List
Local and Regional Agencies
Bay Area Air Quality Management District Contra Costa County Health Services Cal OES Contra Costa County Office of Communication and Media
CalFire Contra Costa County Office of Education
California Department of Parks and Recreation Contra Costa County Office of Restorative Equity and Social Justice
California Department of Social Services Contra Costa County Office of the Sheriff California Department of Transportation (Caltrans) Contra Costa County Probation California Department of Water Resources Contra Costa County Risk Management California Highway Patrol Contra Costa County Transportation Authority California State Lands Commission Contra Costa County Treasurer-Tax Collector Capitol Corridor Joint Powers Authority Contra Costa County Veteran Services Office Central Delta Water Agency Contra Costa County Volunteer Organizations Aiding in Disaster
Contra Costa County Administrator’s Office Contra Costa Water District Contra Costa County Airport Contra Costa Regional Medical Center Contra Costa County Animal Services Department Dublin San Ramon Services District Contra Costa County Auditor – Controller East Bay Municipal Utility District Contra Costa County Clerk-Recorder East Bay Regional Park District Contra Costa County Counsel Metropolitan Transportation Commission Contra Costa County Department of Agriculture National Oceanic and Atmospheric Association Contra Costa County Department of Conservation and
Development National Weather Service
Contra Costa County Department of Information
Technology State Water Resources Control Board
Contra Costa County Department of Public Works Tri Delta Transit Contra Costa County District Attorney’s Office West Contra Costa Transit Authority 98 2024 Hazard Mitigation Plan
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Local and Regional Agencies
Contra Costa County Employment & Human Services
Department WestCAT
Agencies that have the Authority to Regulate Development Contra Costa County Department of Conservation
Development Contra Costa Local Agency Formation Commission Neighboring Communities
Alameda County
Nonprofit Organizations
American Red Cross Futures Explored
California Autism Foundation Independent Living Resources – Solano and Contra Costa Counties
California Resiliency Alliance Inter-Tribal Council of California Care Parent Network La Familia Counseling
CARESTAR Foundation Loaves and Fishes – Contra Costa County CocoKids Meals on Wheels
Community Awareness and Emergency Response Monument Crisis Center Concord Corps. – The Salvation Army Regional Center of the East Bay Contra Costa County Crisis Center - 211 Society of St. Vincent de Paul of Contra Costa County Contra Costa County Crisis Center – Hope Solutions United Way Bay Area Interfaith Council of Contra Costa County VistAbility
Down Syndrome Connection of the Bay Area

Businesses, Academia, and Other Private Organizations
AC Transit John Muir Behavioral Health
Amtrak Kaiser Permanente Hospital
BNSF Railway Marathon Petroleum
California State University Martinez Refinery Company/PBF Energy Chevron Refinery Milestone California-Based Investment Company Contra Costa County Community College District MV Transportation Contra Costa Event Park – Contra Costa County Fair Pacific Gas & Electric Corteva Philips 66 Rodeo Refinery
County Connection Transportation and Link
Paratransit Services Shell Oil Company
Delta View Post Acute Care Skilled Nursing Facility Sutter Delta Medical Center EcoServices Tenet Health
Food Bank of Contra Costa and Solano Valero Energy Corporation 99 2024 Hazard Mitigation Plan
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Businesses, Academia, and Other Private Organizations
Global Medical Response Vituity

Refer to Volume 1 (Planning Area-wide Elements) for a full list of the countywide stakeholders.

Additionally, the City of Hercules identified the following stakeholders and provided an opportunity to review and provide feedback on the draft Plan – Chinese Association of Hercules, Fair Housing Advocates of Northern California, Moms4Housing, Eden Housing, Mid-Pen Housing, Burbank Housing, and Greenbelt Alliance. The aforementioned stakeholders provided an opportunity for racial and ethnic minorities, low income populations, individuals with a housing cost burden, and those living in multi -unit structures to review and provide feedback on the Plan.

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An opportunity to review and provide feedback on the Contra Costa County Hazard Mitigation Plan and the City’s Annex was also provided to West Contra Costa Unified School District staff.

B.2. Continued Public Engagement
To ensure continued public engagement, Contra Costa County and the City of Hercules will ensure the Plan is available in the County’s Hazard Mitigation Plan webpage after it has been approved to allow the public an opportunity to provide continual feedback and input. As future needs and concerns arise, or if the public would like to provide feedback regarding the latest version of the Plan and the City’s Annex, the public is invited to use the comment form, which is provided on the website, to provide comments.

County Hazard Mitigation Webpage: contracosta.ca.gov/6415/Local-Hazard-Mitigation-Plan

Comment Form: survey.alchemer.com/s3/7792090/CommentFormContraCostaCountyHMP

The City of Hercules will continue to work with Contra Costa County and stakeholders to ensure that the public has an opportunity to learn about the Plan, mitigation actions planned for their communities, and ways to get involved. Hazard mitigation will be a part of the City’s community outreach strategy to include, but not limited to, public meetings, community events, social media, and public surveys throughout the year. Furthermore, the City of Hercules will continue to ensure equitable outreach by working with other departments, non-profits, and agencies that work with underserved communities throughout the County.

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APPENDIX C. HAZARD RISK ASSESSMENT METHODOLOGY
As part of the Contra Costa County Office of Emergency Services (OES), the risk assessment identifies the natural, human-caused, and technological hazards that have potential impacts on all or portions of the County. Hazard identification, historical occurrences, and risk modeling (where applicable and available for specific hazards) information was collected from multiple sources including, but not limited to:

• Environmental Systems Research Institute (Esri)
• Federal Emergency Management Agency (FEMA)
• National Centers for Environmental Information (NCEI) • National Weather Services (NWS)
• United States Geological Survey (USGS)
• Local repositories
This information was analyzed to assess the risk and vulnerability of people, property, the environment, and the jurisdiction’s essential operations from these hazards. Furthermore, a risk ranking was performed for the hazards of concern described in this Plan. The risk ranking is an important step in developing an action plan, as it allows jurisdic tions to compare the risk factors from one hazard to another. That comparison provides critical information to use in selecting hazard mitigation actions and their priorities.

This process is not only intended to help focus actions on the hazards with the highest ranking, but also to ensure that jurisdictions are aware of the hazards that ranked low yet still pose significant risk.

In order to provide an informed and comprehensive ranking of the hazards addressed in this Plan, a number of factors were considered: probability, extent, vulnerability, and impact. The sum of all the weighted factors for the extent, vulnerability, and impact categories was combined into a final consequence score. Probability multiplied by consequence resulted in a total risk score for each hazard.

These results were determined by following a data driven quantitative assessment, reviewing, and ranking local knowledge from local subject matter experts, and developing other risk elements by the Core Planning Team based on the data collected. These elem ents were then aggregated to inform the analysis.

At the fundamental level, consequence is an assessment of the potential impact(s) if the hazard incident actually occurs. In this assessment, the consequence of an event (or the impact) will be interdependent on the following factors:

• Vulnerabilities (i.e., social, physical, and community conditions) • Capabilities and capacities
• Mitigation
Extent + Vulnerability + Impact = Consequence

Consequence x Probability = Total Risk Score
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• Characteristics of the hazard event (i.e., magnitude, scale) The frequency/probability of the hazard is not included in assessing the consequence because without the event, there is no consequence or impact.

C.1. Probability of Occurrence
The probability of occurrence of a hazard is indicated by a probability factor based on the likelihood of annual occurrence. Numerical probability factors were assigned as follows.

Table 27 outlines the probability of occurrence factors used in the risk assessment calculations for this Plan. A significant hazard event is defined as any hazard occurrence that directly or indirectly damages structures or infrastructure, impedes normal business operations, and/or is likely to cause serious or fatal injuries.

Table 27. Probability of Occurrence
Probability Description Probability
Factor
High Significant hazard event is likely to occur annually. 3 Medium Significant hazard event is likely to occur within 25 years. 2 Low Significant hazard event is likely to occur within 100 years. 1 Unlikely There is little to no probability of significant occurrence, or the recurrence interval is greater than every 100 years. 0

The assessment of hazard frequency is generally based on past hazard events in the area and professional judgment of local subject matter experts.

C.2. Extent Factors
Extent was assessed in two (2) categories – extent/intensity potential and catastrophic probability of the hazard. Numerical extent factors were assigned as follows.

C.2.1. Extent/Intensity Factor
Extent is defined as the range of anticipated intensities of the identified hazards. This category is most commonly expressed using various scientific scales (e.g., Saffir -Simpson, Enhanced Fujita, Modified Mercalli). Extent/Intensity Factors are hazard-specific and are detailed in each hazard profile. Table 28 outlines the extent/intensity factors used in the risk assessment calculations for this Plan.

Table 28. Extent/Intensity Factor
Probability Description Extent
Factor
High Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity incident. 3
Medium Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity incident. 2
Low Historical and/or probabilistic models/studies for this hazard indicate the possibility of a low-intensity incident. 1
Unlikely Historical and/or probabilistic models/studies for this hazard indicate the possibility of little to no intensity. 0
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C.2.2. Catastrophic Factor
The probability that a hazard could be catastrophic. Catastrophes are defined as significant incidents that cause sudden and great harm or destruction. Table 29 outlines the catastrophic factors used in the risk assessment calculations for this Plan.

Table 29. Catastrophic Factor
Probability Description Extent
Factor
High Catastrophic hazard event is likely to occur at least once in 10 years. 3 Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2
Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1
No Impact Virtually no probability that this hazard could be catastrophic. 0

Each category was assigned a weighting factor to reflect its significance, consistent with this typically used for measuring the benefits of hazard mitigation actions – a weighting factor of three (3) was assigned for Extent/Intensity and its potential for Catastrophe.

C.3. Vulnerability Factors
Vulnerabilities were assessed in three (3) categories – population exposure, property exposure, and exposure based on changes in development. Numerical vulnerability factors were assigned as follows.

C.3.1. Population Exposure Factor
Population exposure values were assigned based on the percentage of the total population exposed to the hazard event. Table 30 outlines the population exposure factors used in the risk assessment calculations for this Plan.

Table 30. Population Exposure Factor
Probability Description Vulnerability
Factor
High 30% or more of the population is exposed to the hazard. 3 Medium 15% to 29% of the population is exposed to the hazard. 2 Low 14% or less of the population is exposed to the hazard. 1 No Vulnerability None of the population is exposed to the hazard. 0 C.3.2. Property Exposure Factor
Property exposure values were assigned based on the percentage of the total property value exposed to the hazard event. Table 31 outlines the property exposure factors used in the risk assessment calculations for this Plan.

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Table 31. Property Exposure Factor
Probability Description Vulnerability
Factor
High 25% or more of the total assessed property value is exposed to the hazard. 3
Medium 10% to 24% of the total assessed property value is exposed to a hazard. 2
Low 9% or less of the total assessed property value is exposed to a hazard. 1
No Vulnerability None of the total assessed property value is exposed to a hazard. 0 C.3.3. Changes in Development
Changes in development in the past five (5) years have increased or decreased the community’s vulnerability/exposure to the hazard. Table 32 outlines the changes in development factors used in the risk assessment calculations for this Plan.

Table 32. Changes in Development Factor
Probability Description Vulnerability
Factor
High Changes in development have increased the vulnerability/exposure of the community to the hazard by 10% or more. 3
Medium Changes in development have increased the vulnerability/exposure of the community to the hazard between 5% and 9%. 2
Low Changes in development have increased the vulnerability/exposure of the community to the hazard by 4% or less. 1
No Vulnerability Changes in development had no effect and/or have decreased the vulnerability/exposure of the community to the hazard. 0

Each category was assigned a weighting factor to reflect the significance, consistent with those typically used for measuring the benefits of hazard mitigation actions – a weighting factor of three (3) was assigned for Population Exposure, and a weighting factor of one (1) was assigned for Property Exposed and Changes in Development.

C.4. Impact Factors
Hazard impacts were assessed in eight (8) categories – population and life/safety, underserved/equity, property damages, economic, environmental, essential operations, future development, and climate change. Numerical impact factors were assigned as follows.

C.4.1. Population and Life Safety Factor
Population and life safety values were assigned based on the best available data (historical and probabilistic) for people vulnerable to the hazard event and whether the affected population is likely to experience adverse impacts from the hazard incident. Table 33 outlines the population and life safety factors used in the risk assessment calculations for this Plan.

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Table 33. Population and Life Safety Factor
Probability Description Impact
Factor
High Populations exposed to this hazard are likely to experience significant adverse impacts, such as fatalities and severe injuries. 3 Medium Populations exposed to this hazard are likely to experience some adverse impacts, such as injuries requiring acute medical care. 2 Low Populations exposed to this hazard are likely to experience minimal adverse impacts, such as ambulatory injuries. 1
No Impact Populations exposed to this hazard are not likely to experience significant adverse impacts. 0
C.4.2. Underserved/Equity Factor
Underserved/equity values were assigned based on the best available data for underserved populations vulnerable to the hazard event and whether the affected population is likely to experience adverse/disproportionate impacts from the hazard incident resulting in greater disparity in equity. Table 34 outlines the underserved/equity factors used in the risk assessment calculations for this Plan.

Table 34. Underserved/Equity Factor
Probability Description Impact
Factor
High
Underserved populations exposed to the hazard are likely to experience significant adverse/disproportionate impacts, such as fatalities and severe injuries.
3 Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts, such as injuries requiring acute medical care.
2 Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 No Impact Underserved populations exposed to the hazard are not likely to experience significant adverse/disproportionate impacts. 0 C.4.3. Property Damage Factor
Property damage values were assigned based on the expected total property damage incurred from a hazard incident. It is important to note that values represent estimates of the loss from a major incident based on historical data or probabilistic models/studies. Table 35 outlines the property damage factors used in the risk assessment calculations for this Plan.

Table 35. Property Damage Factor
Probability Description Impact
Factor
High
More than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to 15% or more of the property value within the jurisdiction.
3 Medium
More than $500,000 but less than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to more than 5% but less than 15% of the property value within the jurisdiction.
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Probability Description Impact
Factor
Low
Less than $500,000 in property damages is expected from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 No Impact Little to no property damage is expected from a single major hazard event. 0
C.4.4. Economic Factor
An estimation of the impact, expressed in terms of dollars, on the local economy is based on a loss of business revenue, crops, worker wages, and local tax revenues or on the impact on the local gross domestic product (GDP). Table 36 outlines the economic factors used in the risk assessment calculations for this Plan.

Table 36. Economic Factor
Probability Description Impact
Factor
High Where the total economic impact is likely to be greater than $10 Million. 3
Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2
Low Total economic impact is not likely to be greater than $100,000. 1 No Impact Virtually no significant economic impact. 0
C.4.5. Environmental Factor
An estimate of the environmental impact from a major hazard event requiring outside resources and support; and/or repair, clean- up, restoration, and/or preservation work. Table 37 outlines the environmental factors used in the risk assessment calculations for this Plan.

Table 37. Environmental Factor
Probability Description Impact
Factor
High
Environmental impact from a single major hazard event is likely to be significant, requiring extensive outside resources and support; and/or repair, clean-up, restoration, and/or preservation work. 3 Medium
Environmental impact from a single major hazard event is likely to be localized, requiring some outside resources and support; and/or repair, clean-up, restoration, or preservation work.
2 Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work. 1 No Impact No environmental impacts from a single major hazard event are likely. 0
C.4.6. Essential Operations Factors
The essential operations factor is the impact on the ability of the jurisdiction to meet the essential day-to- day operational demands and needs of the community after a single major hazard event. Table 38 outlines the essential operations factors used in the risk assessment calculations for this Plan.

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Table 38. Essential Operations Factor
Probability Description Impact
Factor
High
Impact greater than 72 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major hazard event.
3 Medium
Impact between 24 and 72 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major hazard event.
2 Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major hazard event.
1 No Impact
No impact on the ability of the jurisdiction to meet the essential day- to-day operational demands and needs of the community from a single major hazard event.
0 C.4.7. Future Development Factor
The future development factor is the potential that future development will have on increasing or decreasing the impact/consequence of the hazard. Table 39 outlines the future development factors used in the risk assessment calculations for this Plan.

Table 39. Future Development Factor
Probability Description Impact
Factor
High Future development trends will significantly increase the impact/consequence of this hazard. 3
Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2
Low Future development trends will minimally increase
impact/consequence of this hazard. 1
No Impact
Future development trends will not increase the impact/consequence of the hazard, and/or may even decrease the impact/consequence of this hazard.
0 C.4.8. Climate Change Factor
The potential that climate change will increase the risk of the hazard (i.e., type, location, and range of anticipated intensities of the hazard and impacts). Table 40 outlines the climate change factors used in the risk assessment calculations for this Plan.

Table 40. Climate Change Factor
Probability Description Impact
Factor
High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3
Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2
Low Climate Change trends will minimally increase the risk of this hazard and its impacts. 1
No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0
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Each category was assigned a weighting factor to reflect its significance, consistent with those typically used for measuring the benefits of hazard mitigation actions – a weighting factor of three (3) was assigned for Population and Life Safety, and Underserved/Equity, and a weighting factor of two (2) was assigned for Property Damage. A weighting factor of one (1) was assigned for Economic, Environmental, Essential Operations, Future Development, and Climate Change.

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APPENDIX D. HAZARD RISK RANKING DETAILS
D.1. Probability of Occurrence
Hazard Event Probability of Occurrence Probability
Factor
Weighted
Factor
Climate Change Medium Significant hazard event is likely to occur within 25 years. 2 N/A Dam and Levee Failure Low Significant hazard event is likely to occur within 100 years. 1 N/A Drought Medium Significant hazard event is likely to occur within 25 years. 2 N/A Earthquake Medium Significant hazard event is likely to occur within 25 years. 2 N/A Flood
(Riverine/Creek) Medium Significant hazard event is likely to occur within 25 years. 2 N/A Flood
(Urban/Flash Flood) Medium Significant hazard event is likely to occur within 25 years. 2 N/A Heat Wave/Extreme Heat
(Severe Weather) High Significant hazard event is likely to occur annually. 3 N/A Heavy Rainfall
(Severe Weather) High Significant hazard event is likely to occur annually. 3 N/A Landslide Medium Significant hazard event is likely to occur within 25 years. 2 N/A Sea Level Rise Medium Significant hazard event is likely to occur within 25 years. 2 N/A Severe Thunderstorm
(Severe Weather) High Significant hazard event is likely to occur annually. 3 N/A Strong Winds/ Damaging Winds
(Severe Weather) High Significant hazard event is likely to occur annually. 3 N/A Tornado
(Severe Weather) Low Significant hazard event is likely to occur within 100 years. 1 N/A Tsunami Low Significant hazard event is likely to occur within 100 years. 1 N/A Wildfire Medium Significant hazard event is likely to occur within 25 years. 2 N/A Active Shooter Incidents Medium Significant hazard event is likely to occur within 25 years. 2 N/A Cybersecurity Threats Medium Significant hazard event is likely to occur within 25 years. 2 N/A Hazardous Materials Incidents Medium Significant hazard event is likely to occur within 25 years. 2 N/A 110
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Hazard Event Probability of Occurrence Probability
Factor
Weighted
Factor
Terrorism
(Weapons of Mass Destruction) Low Significant hazard event is likely to occur within 100 years. 1 N/A Utility Interruptions High Significant hazard event is likely to occur annually. 3 N/A D.2. Extent Factors
Hazard Event Extent Factor Extent Extent
Factor
Weighted
Factor
Climate Change
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Dam and Levee Failure
Extent/Intensity High
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity
incident.
3 9
Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9
Drought
Extent/Intensity High
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity
incident.
3 9
Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9
Earthquake
Extent/Intensity High
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity
incident.
3 9
Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9
Flood
(Riverine/Creek)
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2 6
Flood
(Urban/Flash Flood)
Extent/Intensity High
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity
incident.
3 9
Catastrophic Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2 6
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Hazard Event Extent Factor Extent Extent
Factor
Weighted
Factor
Heat Wave/Extreme Heat
(Severe Weather)
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Heavy Rainfall
(Severe Weather)
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Landslide
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Sea Level Rise
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2 6
Severe Thunderstorm
(Severe Weather)
Extent/Intensity Low
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a low-intensity
incident.
1 3
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Strong Winds/ Damaging Winds
(Severe Weather)
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Tornado
(Severe Weather)
Extent/Intensity Low
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a low-intensity
incident.
1 3
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Tsunami
Extent/Intensity Low
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a low-intensity
incident.
1 3
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
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Hazard Event Extent Factor Extent Extent
Factor
Weighted
Factor
Wildfire
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2 6
Active Shooter Incidents
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
Cybersecurity Threats
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2 6
Hazardous Materials Incidents
Extent/Intensity High
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity
incident.
3 9
Catastrophic Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2 6
Terrorism
(Weapons of Mass Destruction)
Extent/Intensity High
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity
incident.
3 9
Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9
Utility Interruptions
Extent/Intensity Medium
Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity
incident.
2 6
Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3
D.3. Vulnerability Factors
Hazard Event Vulnerability Factor Vulnerability Vulnerability Factor
Weighted
Factor
Climate Change
Population Exposure High 30% or more of the population (including underserved population) is exposed to the hazard. 3 9
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
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Hazard Event Vulnerability Factor Vulnerability Vulnerability Factor
Weighted
Factor
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Dam and Levee Failure
Population Exposure Low 14% or less of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Drought
Population Exposure High 30% or more of the population (including underserved population) is exposed to the hazard. 3 9
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Earthquake
Population Exposure High 30% or more of the population (including underserved population) is exposed to the hazard. 3 9
Property Exposure High 25% of the total assessed property is exposed to the hazard. 3 6
Changes in
Development Medium
The changes in development have increased the
vulnerability of the community to the hazard
between 5% and 9%.
2 2
Flood
(Riverine/Creek)
Population Exposure Low 14% or less of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Medium
The changes in development have increased the
vulnerability of the community to the hazard
between 5% and 9%.
2 2
Flood
(Urban/Flash Flood)
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure Medium 10% to 24% of the total assessed property value is exposed to the hazard. 2 4
Changes in
Development Medium
The changes in development have increased the
vulnerability of the community to the hazard
between 5% and 9%.
2 2
Heat Wave/Extreme Heat
(Severe Weather) Population Exposure High 30% or more of the population (including underserved population) is exposed to the hazard. 3 9
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Hazard Event Vulnerability Factor Vulnerability Vulnerability Factor
Weighted
Factor
Property Exposure No Vulnerability None of the total assessed property value is exposed to the hazard. 0 0
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Heavy Rainfall
(Severe Weather)
Population Exposure High 30% or more of the population (including underserved population) is exposed to the hazard. 3 9
Property Exposure Medium 10 to 14% of the total assessed property is exposed to the hazard. 2 4
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Landslide
Population Exposure Low 14% or less of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Sea Level Rise
Population Exposure Low 14% or less of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Severe Thunderstorm
(Severe Weather)
Population Exposure High 30% or more of the population (including underserved population) is exposed to the hazard. 3 9
Property Exposure High 25% of the total assessed property is exposed to the hazard. 3 6
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Strong Winds/ Damaging Winds
(Severe Weather)
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure Medium 10% to 24% of the total assessed property value is exposed to the hazard. 2 4
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
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Hazard Event Vulnerability Factor Vulnerability Vulnerability Factor
Weighted
Factor
Tornado
(Severe Weather)
Population Exposure Low 15% to 29% of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 10% to 24% of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Tsunami
Population Exposure Low 15% to 29% of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 10% to 24% of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Wildfire
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure Medium 10% to 24% of the total assessed property value is exposed to the hazard. 2 4
Changes in
Development Medium
The changes in development have increased the
vulnerability of the community to the hazard
between 5% and 9%.
2 2
Active Shooter Incidents
Population Exposure Low 14% or less of the population (including underserved population) is exposed to the hazard. 1 3
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
Changes in
Development No Vulnerability
Changes in development had no effect and/or
decreased the vulnerability of the community to the
hazard.
0 0
Cybersecurity Threats
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure No Vulnerability None of the total assessed property value is exposed to the hazard. 0 0
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Hazardous Materials Incidents
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure Low 9% or less of the total assessed property value is exposed to the hazard. 1 2
116
2024 Hazard Mitigation Plan
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City of Hercules Annex 90
Hazard Event Vulnerability Factor Vulnerability Vulnerability Factor
Weighted
Factor
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Terrorism
(Weapons of Mass Destruction)
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure Medium 10% to 24% of the total assessed property value is exposed to the hazard. 2 4
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
Utility Interruptions
Population Exposure Medium 15% to 29% of the population (including underserved population) is exposed to the hazard. 2 6
Property Exposure No Vulnerability None of the total assessed property value is exposed to the hazard. 0 0
Changes in
Development Low
Changes in development have minimally increased
the vulnerability of the community to the hazard by
4% or less.
1 1
D.4. Impact Factors
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Climate Change
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
117
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 91
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Dam and Levee Failure
Population and Life
Safety Medium
Populations exposed to this hazard are likely to
experience some adverse impacts, such as injuries
requiring acute medical care.
2 6
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage High
More than $5 Million in property damages is expected
from a single major hazard event, or damages are
expected to occur to 15% or more of the property value
within the jurisdiction.
3 6
Economic High Where the total economic impact is likely to be greater than $10 Million. 3 3
Environmental High
Environmental impact from a single major hazard event is likely to be significant, requiring extensive outside
resources and support; and/or repair, clean-up,
restoration, and/or preservation work.
3 3
Essential Operations High
Impact greater than 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
3 3
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2 Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2
Drought
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
118
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 92
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2 Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Earthquake
Population and Life
Safety High
Populations exposed to this hazard are likely to
experience significant adverse impacts, such as fatalities and severe injuries.
3 9
Underserved/Equity High
Underserved populations exposed to the hazard are likely to experience significant adverse/disproportionate
impacts, such as fatalities and severe injuries.
3 9
Property Damage High
More than $5 Million in property damages is expected
from a single major hazard event, or damages are
expected to occur to 15% or more of the property value
within the jurisdiction.
3 6
Economic High Where the total economic impact is likely to be greater than $10 Million. 3 3
Environmental High
Environmental impact from a single major hazard event is likely to be significant, requiring extensive outside
resources and support; and/or repair, clean-up,
restoration, and/or preservation work.
3 3
Essential Operations High
Impact greater than 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
3 3
Future Development High Future development trends will significantly increase the impact/consequence of this hazard. 3 3
119
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 93
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Climate Change No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0 0
Flood
(Riverine/Creek)
Population and Life
Safety Medium
Populations exposed to this hazard are likely to
experience some adverse impacts, such as injuries
requiring acute medical care.
2 6
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage High
More than $5 Million in property damages is expected
from a single major hazard event, or damages are
expected to occur to 15% or more of the property value
within the jurisdiction.
3 6
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental Medium
Environmental impact from a single major hazard event is likely to be localized, requiring some outside resources and support; and/or repair, clean-up, restoration, or
preservation work.
2 2
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2 Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Flood
(Urban/Flash Flood)
Population and Life
Safety Medium
Populations exposed to this hazard are likely to
experience some adverse impacts, such as injuries
requiring acute medical care.
2 6
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage High
More than $5 Million in property damages is expected
from a single major hazard event, or damages are
expected to occur to 15% or more of the property value
within the jurisdiction.
3 6
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
120
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 94
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Environmental Medium
Environmental impact from a single major hazard event is likely to be localized, requiring some outside resources and support; and/or repair, clean-up, restoration, or
preservation work.
2 2
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2 Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Heat Wave/Extreme Heat
(Severe Weather)
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage No Impact Little to no property damage is expected from a single major hazard event. 0 0
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental No Impact No environmental impacts from a single major hazard event are likely. 0 0
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Heavy Rainfall
(Severe Weather)
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
121
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 95
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Landslide
Population and Life
Safety Medium
Populations exposed to this hazard are likely to
experience some adverse impacts, such as injuries
requiring acute medical care.
2 6
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage High
More than $5 Million in property damages is expected
from a single major hazard event, or damages are
expected to occur to 15% or more of the property value
within the jurisdiction.
3 6
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
122
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 96
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2
Sea Level Rise
Population and Life
Safety No Impact Populations exposed to this hazard are not likely to experience significant adverse impacts. 0 0
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Medium
More than $500,000 but less than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to more than 5% but less
than 15% of the property value within the jurisdiction. 2 4
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental Medium
Environmental impact from a single major hazard event is likely to be localized, requiring some outside resources and support; and/or repair, clean-up, restoration, or
preservation work.
2 2
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2 Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3
Severe Thunderstorm
(Severe Weather)
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
123
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 97
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2
Strong Winds/ Damaging Winds
(Severe Weather)
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Medium
More than $500,000 but less than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to more than 5% but less
than 15% of the property value within the jurisdiction. 2 4
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2
Tornado
(Severe Weather)
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
124
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 98
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work.
1 1
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands
and needs of the community from a single major hazard
event.
1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2
Tsunami
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage Medium
More than $500,000 but less than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to more than 5% but less
than 15% of the property value within the jurisdiction. 2 4
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change Low Climate Change trends will minimally increase the risk of this hazard and its impacts. 1 1
125
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 99
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Wildfire
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage Medium
More than $500,000 but less than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to more than 5% but less
than 15% of the property value within the jurisdiction. 2 4
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental High
Environmental impact from a single major hazard event is likely to be significant, requiring extensive outside
resources and support; and/or repair, clean-up,
restoration, and/or preservation work.
3 3
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change Low Climate Change trends will minimally increase the risk of this hazard and its impacts. 1 1
Active Shooter Incidents
Population and Life
Safety Medium
Populations exposed to this hazard are likely to
experience some adverse impacts, such as injuries
requiring acute medical care.
2 6
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Low Total economic impact is not likely to be greater than $100,000. 1 1
Environmental No Impact No environmental impacts from a single major hazard event are likely. 0 0
126
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 100
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0 0
Cybersecurity Threats
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental No Impact No environmental impacts from a single major hazard event are likely. 0 0
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0 0
Hazardous Materials Incidents
Population and Life
Safety Low
Populations exposed to this hazard are likely to
experience minimal adverse impacts, such as ambulatory
injuries.
1 3
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage Low
Less than $500,000 in property damages is expected
from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 2
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
127
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 101
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Environmental High
Environmental impact from a single major hazard event is likely to be significant, requiring extensive outside
resources and support; and/or repair, clean-up,
restoration, and/or preservation work.
3 3
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0 0
Terrorism
(Weapons of Mass Destruction)
Population and Life
Safety High
Populations exposed to this hazard are likely to
experience significant adverse impacts, such as fatalities and severe injuries.
3 9
Underserved/Equity Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 3
Property Damage High
More than $5 Million in property damages is expected
from a single major hazard event, or damages are
expected to occur to 15% or more of the property value
within the jurisdiction.
3 6
Economic High Where the total economic impact is likely to be greater than $10 Million. 3 3
Environmental Medium
Environmental impact from a single major hazard event is likely to be localized, requiring some outside resources and support; and/or repair, clean-up, restoration, or
preservation work.
2 2
Essential Operations High
Impact greater than 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
3 3
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1
Climate Change No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0 0
Utility Interruptions Population and Life
Safety Medium
Populations exposed to this hazard are likely to
experience some adverse impacts, such as injuries
requiring acute medical care.
2 6
128
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 102
Hazard Event Impact Factor Impact Impact
Factor
Weighted
Factor
Underserved/Equity Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts,
such as injuries requiring acute medical care.
2 6
Property Damage No Impact Little to no property damage is expected from a single major hazard event. 0 0
Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2
Environmental No Impact No environmental impacts from a single major hazard event are likely. 0 0
Essential Operations Medium
Impact between 24 and 72 hours on the ability of the
jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major
hazard event.
2 2
Future Development No Impact
Future development trends will not increase the
impact/consequence of the hazard, and/or may even
decrease the impact/consequence of this hazard.
0 0
Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2

129
2024 Hazard Mitigation Plan
Contra Costa County, California

City of Hercules Annex 103
APPENDIX E. PLAN ADOPTION
[Placeholder for adoption documentation after State and FEMA Approval] 130
U.S. Department of Homeland Security
FEMA Region 9
1111 Broadway, Suite 1200
Oakland, CA 94607-4052

www.fema.gov

January 22, 2025

Beatriz Portillo
Senior Emergency Planning Coordinator
Contra Costa County Office of Emergency Services
1850 Muir Road
Martinez, CA 94553

Dear Beatriz Portillo:

The 2024 Contra Costa County Hazard Mitigation Plan has been amended to include the jurisdictions listed below as official planning participants:

1. City of Brentwood

2. City of Clayton

3. Town of Danville

4. City of El Cerrito

5. City of Hercules

6. City of Lafayette

7. City of Martinez

8. Town of Moraga

9. City of Oakley

10. City of Orinda

11. City of Pinole

12. City of Pleasant Hill

13. City of Richmond

14. City of San Pablo

15. City of San Ramon

16. City of Walnut Creek

17. Central Contra Costa Sanitary District

18. Contra Costa County Fire Protection District

19. Contra Costa County Flood Control and Water Conservation District

20. Contra Costa Water District

21. Ironhouse Sanitary District

22. Kensington Fire Protection District

23. Kensington Police Protection and Community Services District

24. Mt. View Sanitary District

25. Pleasant Hill Parks and Recreation District

26. Reclamation District No. 799 (Hotchkiss Tract)

27. Reclamation District No. 830 (Jersey Island)

28. Reclamation District No. 2025 (Holland Tract)

29. Reclamation District No. 2026 (Webb Tract)

30. Reclamation District No. 2065 (Veale Tract)

31. Reclamation District No. 2122 (Winter Island)
131
Contra Costa County Hazard Mitigation Plan Amendment Notice January 22, 2025

Page 2 of 4 ends

32. Reclamation District No. 2137

33. Rodeo-Hercules Fire Protection District

34. San Ramon Valley Fire Protection District

35. San Ramon Valley Unified School District

36. Town of Discovery Bay Community Services District

37. West County Wastewater District

These jurisdictions must submit an adoption resolution to FEMA in order to be considered fully approved.

FEMA’s approval of the 2024 Contra Costa County Hazard Mitigation Plan remains for a period of five years from the original approval date of September 18, 2024, for all approved participants. An updated list of the status of current participating jurisdictions is enclosed with this letter.

Prior to September 18, 2029, Contra Costa County and all participating jurisdictions are required to review and revise the plan to reflect changes in development, progress in local mitigation efforts, and changes in priorities, and resubmit it for approval in order to continue to be eligible for mitigation project grant funding.

The continued approval of this plan ensures Contra Costa County and all participating jurisdictions’ continued eligibility for project grants under FEMA’s Hazard Mitigation Assistance programs, including the Hazard Mitigation Grant Program, Building Resilient Infrastructure and Communities Program, and Flood Mitigation Assistance Program. All requests for funding, however, will be evaluated individually according to the specific eligibility, and other requirements of the particular program under which applications are submitted.

If you have any questions regarding the planning or review processes, please contact the FEMA Region 9 Hazard Mitigation Planning Team at [email protected].

Sincerely,

Alison Kearns
Planning and Implementation Branch Chief
Mitigation Division
FEMA Region 9

Enclosures (2)
Contra Costa Annex Review Tool, dated January 22, 2025 Status of Participating Jurisdictions, dated January 22, 2025

cc: Robyn Fennig, State Hazard Mitigation Officer, California Governor’s Office of Emergency Services
Victoria LaMar-Haas, Hazard Mitigation Planning Chief, California Governor’s Office of Emergency Services
132
Contra Costa County Hazard Mitigation Plan Amendment Notice January 22, 2025

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Status of Participating Jurisdictions as of January 22, 2025

Jurisdictions – Adopted and Approved
# Jurisdiction Adoption Receipt Date
1 Contra Costa County 11/14/2024
2 Bethel Island Municipal Improvement District 11/18/2024 3 Diablo Water District 9/18/2024

Jurisdictions – Approvable Pending Adoption
# Jurisdiction
1 City of Brentwood
2 City of Clayton
3 Town of Danville
4 City of El Cerrito
5 City of Hercules
6 City of Lafayette
7 City of Martinez
8 Town of Moraga
9 City of Oakley
10 City of Orinda
11 City of Pinole
12 City of Pleasant Hill
13 City of Richmond
14 City of San Pablo
15 City of San Ramon
16 City of Walnut Creek
17 Central Contra Costa Sanitary District
18 Contra Costa County Fire Protection District
19 Contra Costa County Flood Control and Water Conservation District 20 Contra Costa Water District
21 Ironhouse Sanitary District
22 Kensington Fire Protection District
23 Kensington Police Protection and Community Services District 24 Mt. View Sanitary District
25 Pleasant Hill Parks and Recreation District
26 Reclamation District No. 799 (Hotchkiss Tract)
27 Reclamation District No. 830 (Jersey Island)
28 Reclamation District No. 2025 (Holland Tract)
29 Reclamation District No. 2026 (Webb Tract)
30 Reclamation District No. 2065 (Veale Tract)
31 Reclamation District No. 2122 (Winter Island)
32 Reclamation District No. 2137
133
Contra Costa County Hazard Mitigation Plan Amendment Notice January 22, 2025

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www.fema.gov

33 Rodeo-Hercules Fire Protection District
34 San Ramon Valley Fire Protection District
35 San Ramon Valley Unified School District
36 Town of Discovery Bay Community Services District
37 West County Wastewater District

134
CO

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AGENDA ITEMS

1. 25-135

2. 25-114

3. 25-130
135
111 Civic Drive
Hercules, CA 94547City of Hercules
Meeting Minutes
City Council
Mayor Dion Bailey
Vice Mayor Chris Kelley
Council Member Alex Walker-Griffin
Council Member Dilli Bhattarai
Council Member Tiffany Grimsley
Dante Hall, City Manager
Christie Crowl, City Attorney
Eibleis Melendez, City Clerk
6:00 PMTuesday, April 22, 2025
CLOSED SESSION - 6:00 P.M., REGULAR MEETING - 7:00 P.M
In-Person in Council Chambers or To Watch or Listen only:

Zoom ID: 847 2267 7068 Zoom Passcode: 560179
Zoom Phone Number: 1-669-900-6833
I.

SPECIAL CLOSED SESSION – CALL TO ORDER - ROLL CALL - 6:00 P.M. 1A. CONSIDER AND TAKE ACTION ON ANY REQUEST FROM A COUNCIL MEMBER TO

PARTICIPATE IN A MEETING REMOTELY DUE TO JUST CAUSE OR EMERGENCY CIRCUMSTANCES PURSUANT TO AB 2449
Vice Mayor Kelley arrived late to Closed Session and was not present during roll-call.

Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley

Present: 5 -
II. PUBLIC COMMUNICATION - CLOSED SESSION ITEMS
NONE
III. CONVENE INTO CLOSED SESSION
The Hercules City Council will meet in Closed Session regarding the following:

City Attorney, Christie Crowl, read the title of the item to be discussed in Closed Session. City Council and Staff recessed into Closed Session.

1. 25-125
CONFERENCE WITH REAL PROPERTY NEGOTIATORS Pursuant to
Government Code section 54956.8. CONFERENCE WITH Real Property Negotiators Property address: 1680 Refugio Valley Road, Hercules CA 94547 Agency Negotiators: Dante Hall, City Manager; Christie Crowl, City Attorney, Negotiating Parties: City of Hercules, Rodeo Hercules Fire Protection District

Page 1 ends

25-135
136
April 22, 2025City Council Meeting Minutes
IV. REGULAR MEETING – CONVENE TO OPEN SESSION - ROLL CALL - 7:00 P.M.

Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley

Present: 5 -
V. REPORT ON ACTION TAKEN IN CLOSED SESSION
City Attorney, Christie Crowl, stated that there was no final or reportable action taken in Closed Session.

VI. PLEDGE OF ALLEGIANCE
The Pledge of Allegiance was lead by Vice Mayor Kelley.

VII. MOMENT OF SILENCE
Mayor Bailey requested a moment of silence for John James Hunter, a teacher at Hercules High School, who passed away recently.

VIII. INTRODUCTIONS/PRESENTATIONS/COMMISSION REPORTS
National Volunteer Week - Volunteer Recognition
Parks and Recreation Director, Christopher Roke, and Police Chief, Joseph Vasquez, introduced the item and provided background on Volunteer Recognition Week and what the volunteers do to help their departments. Volunteers were recognized and handed certificates and t-shirts to honor their service. Photos were taken. Council gave their remarks.

IX. AGENDA ADDITIONS/DELETIONS
NONE

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April 22, 2025City Council Meeting Minutes
X. PUBLIC COMMUNICATIONS
Public comment was provided by Chris Costa and Sarah Creeley.

This time is reserved for members of the public to address issues not included in the agenda. In accordance with the Brown Act, Council will refer to staff any matters brought before them at this time, and those matters may be placed on a future agenda.

XI. PUBLIC HEARINGS
NONE
XII. CONSENT CALENDAR
MOTION: A motion was made by Council Member Walker-Griffin, seconded by Vice Mayor Kelley, to adopt the Consent Calendar. The motion carried by the following vote:

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -

1. 25-122
Meeting Minutes for the Special Meeting of March 26, 2025 Meeting Minutes For the Special Meeting of March 26, 2025Attachments:

APPROVED

2. 25-121 Meeting Minutes for the Regular Meeting of April 8, 2025 Meeting Minutes for the Regular Meeting of April 8, 2025Attachments:

APPROVED

3. 25-116 Resolution Ratifying Prior Action to Approve Restated Solid Waste Franchise Agreement between City of Hercules and Richmond Sanitary Service, Inc. dba Republic Services and Directing Staff to Execute Agreement
RECOMMENDATION:

Staff recommends that the City Council adopt a Resolution of the City Council of the City of Hercules Ratifying the Council’s Prior Approval of an Agreement with Richmond Sanitary Services, Inc. dba Republic Services for Solid Waste Collection Services and Direction to Staff Execute the Agreement.

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138
April 22, 2025City Council Meeting Minutes
Staff Report - Franchise Agreement
Attach 1 - March 25, 2025 Staff Report
Attach 2 - Resolution for Franchise Agmt Ratifications
Attachments:

Resolution 25-020, APPROVED
XIII. DISCUSSION AND/OR ACTION ITEMS

1. 25-118 Consideration of Making the Police Chief’s Advisory Committee A Brown Act Committee
RECOMMENDATION:

Staff recommends that the Council discuss this item and provide direction to staff by minute order.

Staff Report - A Brown Acted Police Chief's Advisory Committee Attach 1 - Staff Report - February 23, 2021
Attach 2 - Staff Report - November 9, 2021
Attach 3 - CAB Meeting Agendas
Attach 4 - Police Chiefs Advisory Board Membership Application Attachments:

City Manager, Dante Hall, introduced and presented the item. Council asked questions and provided comments. City Attorney, Christie Crowl, provided a response. Public comment was provided by Sarah Creeley.

Mayor Bailey asked City Manager Hall to provide clarification on the current Chiefs Advisory Board. Police Chief Joe Vasquez provided a response. Public comment continued with Steven Kirby, Margaret Short, Darlene Almeda, Tanya Little, Nancy Estobez, Paul Cardaropoli and Rubin Zenn. Discussion continued and comments were provided byCouncil.

Direction was provided by Council.

MOTION: A motion was made by Vice Mayor Kelley, seconded by Council Member Walker-Griffin, for Staff to present two Chief Advisory Board meeting options at a future City Council Meeting. Option 1. Non Brown Acted Meeting - Meeting dates are posted(does not have to be by agenda), no minutes and Police Chief reports out at a City Council meeting. Option 2. Brown Acted meeting - The meeting would follow the rules and procedures of The Brown Act. The motion carried by the following vote:

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -

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April 22, 2025City Council Meeting Minutes

2. 25-120 Landscaping and Lighting Assessment Districts - Approval of Preliminary Engineer’s Reports and Declaring the City Council’s Intention to Levy and Collect Assessments for Fiscal Year 2025/26
RECOMMENDATION:

City staff is recommending City Council adopt the following resolutions:
a. A resolution for the preliminary approval of the Engineer’s Report and declaring the City Council’s intention to levy and collect assessments for Fiscal Year 2025/26 within the Citywide Landscaping and Lighting Assessment District No. 83-2, which is comprised of Benefit Zone Nos. 1, 2, 3&4, 5A, 5B, 5C, 6, 7, 8, 9, and 10, and setting a public hearing for June 24, 2025;
b. A resolution for the preliminary approval of the Engineer’s Report and declaring the City Council’s intention to levy and collect assessments for Fiscal Year 2025/26 within the Victoria by the Bay Landscaping and Lighting Assessment District No. 2002-1 and setting a public hearing for June 24, 2025;
c. A resolution for the preliminary approval of the Engineer’s Report and declaring the City Council’s intention to levy and collect assessments for Fiscal Year 2025/26 within the Hercules Village Landscaping and Lighting Assessment District No. 2002-2 and setting a public hearing for June 24, 2025;
d. A resolution for the preliminary approval of the Engineer’s Report and declaring the City Council’s intention to levy and collect assessments for Fiscal Year 2025/26 within the Baywood Landscaping and Lighting Assessment District No. 2004-1 and setting a public hearing for June 24, 2025; and
e. A resolution for the preliminary approval of the Engineer’s Report and declaring the City Council’s intention to levy and collect assessments for Fiscal Year 2025/26 within the Bayside Landscaping and Lighting Assessment District No. 2005-1 and setting a public hearing for June 24, 2025.

Staff Report - FY 2025-26 LLAD- Preliminary Engineers Report and Resolution of Intention
Attach 1 - Resolution - FY25-26 Citywide
Attach 2 - Resolution - FY25-26 Victoria By the Bay
Attach 3 - Resolution - FY25-26 Hercules Village
Attach 4 - Resoltuion - FY25-26 Baywood
Attach 5 - Resolution - FY25-26 Bayside
Attach 6 - LLAD Preliminary Engineer's Reports 2025-2026 Attachments:

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April 22, 2025City Council Meeting Minutes
Cit Manager, Dante Hall, introduced the item. Francisco and Associates presented the item. No public comment. Council asked questions and provided comment. Francisco and Associates and CM provided a response. Action was taken on this item
MOTION: A motion was made by Vice Mayor Kelley, seconded by Council Member Walker-Griffin, to adopt Resolution 25-021(LLAD 83-2).

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -
MOTION: A motion was made by Council Member Grimsely, seconded by Council Member Walker-Griffin, to adopt Resolution 25-022(LLAD VBTB).

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -
MOTION: A motion was made by Council MemberWalker-Griffin, seconded by Vice Mayor Kelley, to adopt Resolution 25-023(LLAD Hercules Village).

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -
MOTION: A motion was made by Council MemberWalker-Griffin, seconded by Council Member Kelley, to adopt Resolution 25-024(LLAD Baywood).

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -
MOTION: A motion was made by Vice Mayor Kelley, seconded by Council Member Walker-Griffin, to adopt Resolution 25-025(LLAD Bayside).

Aye: Council Member Dilli Bhattarai, Mayor D. Bailey, Vice Mayor C. Kelley, Council Member A. Walker-Griffin, and Council Member T. Grimsley 5 -

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April 22, 2025City Council Meeting Minutes

3. 25-119 Budget Workshop: FY 25-26 City of Hercules Annual Proposed Budget and Capital Improvement Plan
RECOMMENDATION:

No action is required at this time. It is advisable for the City Council to engage in discussion and provide guidance to staff concerning the proposed Fiscal Year (FY) 25-26 annual budget. This discussion should address the additional budget request, as detailed in Attachment 1, which outlines the significant changes and the economic implications of each adjustment.

Staff Report - Budget Workshop - FY 25-26 Proposed Annual Budget Attach 1 - FY 25-26 List of Additional Budget Request v.1 Attach 2 - FY 25-26 Proposed General Fund - Fund Summary Attach 3 - FY 25-26 Proposed Special Revenue Budget - Fund Summaries
Attach 4 - FY 25-26 Proposed Sewer Enterprise - Fund Summaries Attach 5 - FY 25-26 Proposed Internal Service Budget - Fund Summaries
Attach 6 - FY 25-26 Proposed Debt Service Budget - Fund Summaries
Attach 7 - FY 25-26 Proposed Capital Project Budget - Fund Summaries
Presentation
Attachments:

City Manager Dante Hall introduced the item. Finance Director Edwin Gato presented. No public comment. Council asked questions and provided comment. Director Gato and Public Works Interim Director, Jeff Brown provided a response. No action was taken on this item.

XIV. PUBLIC COMMUNICATIONS
Public Comment was provided by Jamela Smith.

This time is reserved for members of the public who were unavailable to attend the Public Communications period during Section X of the meeting, or were unable to speak due to lack of time. The public speaker requirements specified in Section X of this Agenda apply to this Section.

XV. CITY COUNCIL/CITY MANAGER/CITY ATTORNEY ANNOUNCEMENTS,

COMMITTEE, SUB-COMMITTEE AND INTERGOVERNMENTAL COMMITTEE REPORTS

1. Regional Committee

2. City Council Committees and Subcommittees

3. Commission Liaisons

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142
April 22, 2025City Council Meeting Minutes
No announcements from the City Manager and City Attorney.

1. Regional Committees
Vice Mayor Kelley reported out on the April 10th WestCat board meeting and the April 16th Contra Costa Transportation Authority(CCTA) board meeting. Mayor Bailey reported out on the Marin Clean Energy Board meeting.

2. City Council Committees and Subcommittees
Council Member Bhattarai reported out on the Wastewater Subcommittee Meeting

3. Commission Liaisons
No reports were provided
Community Events-
Council Members reported out on events they attended throughout the City and County.

XVI. ADJOURNMENT
Mayor Bailey adjourned the meeting at 9:32 p.m.
_________________________________
Dion Bailey, Mayor
Attest:
_______________________________
Eibleis Melendez, City Clerk

Page 8 ends

143

CONSENT CALENDAR

AGENDA ITEMS

2. 25-114

144
1 STAFF REPORT TO THE CITY COUNCIL
DATE: Regular Meeting of May 13, 2025
TO: The Mayor and Members of the City Council
VIA: Dante Hall, City Manager
SUBMITTED BY: Nanda Gottiparthy, Acting City Engineer
SUBJECT: Authorize City Manager to execute an amendment to the City’s October 22, 2024 Professional Services Agreement with LSA Associates, Inc. (LSA) (Resolution No. 24-069) Increasing the Total Cost by $11,800
RECOMMENDED ACTION:

Adopt a Resolution authorizing the City Manager to execute an amendment LSA to provide additional services pursuant to the City’s October 22, 2024, Professional Services Agreement with LSA Associates, Inc. (LSA) (Resolution No. 24-069), increasing the total cost by $11,800.

BACKGROUND:

On October 22, 2024, the city entered into an agreement in the amount of $132,101 for professional services with LSA (Resolution No. 24-069) to conduct a bathymetric survey, complete soils sampling/analysis, prepare sediment dredging plans, and prepare permit applications for the Refugio Valley Par k Pond Dredging Project. LSA’s subconsultant, Terraphase, performed the sampling and analysis of the pond sediments for reuse or disposal on cert ain City -owned open space property . Their investigative sampling revealed concentrations of cadmium, copper, and vanadium above the Regional Water Quality Control Board (RWQCB) Environmental Screening Levels (ESLs) for terrestrial habitats. It is thus re commended that t he City perform additional analysis to guide the city’s decision on the open space placement of the sediment. With the additional requested funding, Terraphase will analyze the City’s ability to use the open space site for disposal. A scope of work from Terraphase is included as Attachment 2. 25-114
145
2 Financial Impact
Description: Add service to Lake Refugio Dredging (Project #63039)

Funding Source: General Fund Capital Reserve (300-6432-642.05-00)

Budget Recap:

Total Estimated cost: $11,800 New Revenue: None
Amount Budgeted: Lost Revenue: N/A
New funding required: Yes New Personnel: N/A
Council Policy Change: Yes No

SUMMARY OF CURRENT CONDITION OF LAKE REFUGIO:

Currently Refugio Lake is difficult to maintain. Sediment buildup has created shallow depths and warmer waters , resulting in higher levels of nutrients like nitrogen and phosphorus as well as fueling growth of algae and aquatic weeds. The City has hired an Aquatic Habitat Maintenance company that is working diligently to control the growth of these materials through nutrient remediation which controls the nutrients in the lake to keep algae growth at an expectable level. Algae is a sign of a healthy eco-system within the lake but in excessive amounts it may be unsightly and undesirable. Excessive algae growth also clogs the aerators (fountains) which provide both a pleasant appearance and beneficial oxygen to the waters. The City is working to obtain the necessary State permits to dredge the lake to restore depth , which will provide a more consistent healthy manageable lake.

ENVIRONMENTAL DETERMINATION:

It can be seen with certainty that the preliminary testing of the lake soils/spoils will not have an impact on the environment and thus approval of this contract amendment to include those activities is exempt from review under the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines section 15061(b)(3). Further, following results of the testing, the City will ultimately make a determination as to how to proceed with full implementation of the dredging project at which time additional CE QA review may be performed.

FISCAL IMPACT:

The adopted FY 24 -25 b udget includes an allocation of $100,000 from the General Fund/Capital Reserves appropriated for Preliminary Engineering, Environmental Compliance and Permitting of the Dredging Project. This funding has covered the majority of LSA contract. To fully support additional services required for this project, staff request that the Council appropriate an additional $11,800 from General Fund/Capital Reserves.

Once the project has advanced sufficiently to allow for a detailed estimate of the dredging costs, staff will provide the City Council with a comprehensive funding plan for consideration.

146
3 ATTACHMENTS:

Attachment 1 – Resolution
Attachment 2 – March 3, 2025, Terraphase Proposal Letter 147

HERCULES CITY COUNCIL

RESOLUTION
NO. _________

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF HERCULES ,

CALIFORNIA, AUTHORIZING THE CITY MANAGER TO EXECUTE AN AMENDMENT TO THE CITY’S OCTOBER 22, 2024 PROFESSIONAL SERVICES AGREEMENT WITH LSA (RESOLUTION N O. 24 -069) TO INCREASE THE TOTAL COST BY $11,800 FOR ADDITIONAL TESTING

WHEREAS, On October 22, 2024, the city entered into an agreement in the amount of $132,101 for professional services with LSA (Resolution No. 24 -069) to conduct a bathymetric survey, complete soils sampling/analysis, prepare sediment dredging plans, and prepare permit applications for the Refugio Valley Park Pond Dredging Project; and

WHEREAS, LSA’s subconsultant, Terraphase, performed the sampling and analysis of the pond sediments for reuse or disposal; and

WHEREAS, Terraphase’s investigative sampling indicates that a subset of samples exhibits concentrations of cadmium, copper, and vanadium above the Regional Water Quality Control Board (RWQCB) Environmental Screening Levels (ESLs) for terrestrial habitat; and

WHEREAS, Terraphase and SNG & Associates, Interim City Engineer, recommended that the City perform further testing to determine whether City-owned open space is appropriate for sediment disposal; and

WHEREAS, Terraphase has agreed to perform a Limited Ecological Risk Evaluation on the sediment on a time -and materials basis for an estimated cost of $11,800.

NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Hercules as follows:

1. It can be seen with certainty that the preliminary testing of the lake soils/spoils will not have an impact on the environment and thus approval of this contract amendment to include those a ctivities is exempt from review under the California Environmental Quality Act (CEQA) pursuant t o CEQA Guidelines section 15061(b)(3). Further, following results of the testing, the City will ultimately make a determination as to how to proceed with full implementation of the dredging project at which time additional CEQA review may be performed.

2. The City Council hereby authorizes the City Manager to authorize LSA to provide Additional Services to the City’s October 22, 2024 Professional 148

Services Agreemen t with LSA (Resolution No. 24 -069) to increase the total cost by $11,800.

3. The City Council authorizes the appropriation and/or expenditure of an amount not to exceed $ 11,800 from the General Fund Capital Reserve (300 - 6432-642.05-00) to fully fund these Additional Services.

The foregoing Resolution was duly and regularly adopted at a regular meetin g of the City Council of the City of Hercules held on the _____ day of ______________ , 2025 by the following vote of the Council:

AYES:

NOES:

ABSTAIN:

ABSENT:

____________________________
Dion Bailey, Mayor

ATTEST:

________________________________
Eibleis Melendez, City Clerk
149
150
151
152
153
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AGENDA ITEMS

3. 25-130
154

STAFF REPORT TO THE CITY COUNCIL
DATE: Regular Meeting of May 13, 2025
TO: Mayor and Members of the City Council
VIA: Dante Hall, City Manager
SUBMITTED BY: Edwin Gato, Director of Finance
SUBJECT: Accept the Investment Report for the Quarter Ending March 31, 2025
RECOMMENDED ACTION:

Accept the Investment Report for the Quarter Ending March 31, 2025 EXECUTIVE SUMMARY:

Pursuant to California Government Code section 53646 and the City’s Investment Policy, a quarterly report and certification shall be provided to the City Council, City Manager, and City Independent Auditor. The Quarterly Investment Report shall include a complete description of the portfolio, the type of investments, the issuers, maturity dates, par value, and dollar amounts invested in all securities. The certification must ensure that investments were made consistently with the City’s Investment Policy and that the City will meet its expenditure obligations for the next six months. The Quarterly Investment Report for the quarter ending March 31, 2025, is provided as Attachment 1.

BACKGROUND:

To comply with state law and city policy, the City must present quarterly investment reports detailing the City's investment portfolio to the City Council, City Manager, and City Auditor. The Council's authority to invest in or reinvest funds or sell or exchange securities is delegated to the City's Finance Director, who also serves as City Treasurer. Pursuant to the Investment Policy, the City Treasurer may delegate some of their fiduciary responsibility to an outside investment management firm. An investment manager's fiduciary responsibility is a legal req uirement for registration with the Securities and Exchange Commission under the Investment Advisor Act 1940. Due to the specialized services and expertise required to assist the City with the varied investment options, the City has used the Local Investment Agency Fund (LAIF) and PARS experienced investment managers. 25-130
155

ANALYSIS:

This report presents the City's investment portfolio for the quarter ending March 31, 2025. It has been prepared to comply with California Government Code Section 53646 regulations and the City's Investment Policy. The report includes all cash and investments managed by the City, as well as City -related investments held by bond trustees for debt service obligations and funds held in the irrevocable trust with PARS for pension and other post- employment benefits (OPEB). Additionally, the report provides details on each security's investment type, issuer, maturity date, cost, and current market value.

The City utilizes the Local Agency Investment Fund (LAIF), a money market fund administered by the State Treasurer. LAIF includes many governmental agency participants and holds securities through its administrator. It offers local agencies a means to invest cash held in a treasury pool that can be withdrawn as needed on a same-day basis to meet cash flow needs, while still earning interest generated by the Pooled Money Investment Account (PMIA). Furthermore, the investments held by Bond Trustees are managed according to individual bond indentures.

As of March 31, 2025, the overall average yield of the pooled investment portfolio (before adjustments for changes in market value) was 4.68%. This is higher than the two-year U.S.

Treasury Note rate of 4.59% and the LAIF average monthly rate of 4. 313%. The market value of the pooled portfolio was $49,179, reflecting an increase of 0.07% from the book value. Since the City does not intend to sell its pooled investment portfolio securities before maturity, this will not impact the yield.

As of March 31, 2025, 78.14% of the total investment portfolio is allocated to LAIF. Within LAIF's investment distribution, 79.9% is comprised of U.S. Treasuries and agency notes, while 9.3% is invested in certificates of deposit (CDs) and bank notes. The remaining 10.8% is allocated to various other investment types. For further insights, including economic summaries and detailed information on each investment advisor as well as LAIF, please refer to the Investment Portfolio Summary Report included in Attachment 1.

Amount
Market Over/(Under) Average
Investment Type Value Cost Yield
Petty Cash $2,005 - 0.00%
Cash in Bank 8,605,254 - 0.00% Local Agency Investment Fund (LAIF) 57,961,392 $49,179 4.31% Irrevocable Trust (Pension) 2,491,468 - 5.58% Irrevocable Trust (OPEB) 3,008,916 - 5.58% Investments with Bond Trustees 2,090,743 - 4.14% Total Portfolio $74,159,778 $49,179 4.68%
156

The City strategically manages its idle cash from all operating funds on a pooled basis to optimize returns. Earnings are allocated to each fund based on their respective average cash balances. It is important to note that the timing of revenue collections —such as property taxes, business licenses, and franchise taxes—can significantly influence quarterly investment income throughout the year. At present, the City maintains adequate cash reserves to meet anticipated obligations over the next six months.

In compliance with Governmental Accounting Standards Board (GASB) Statement 40, the City is required to recognize the fair market value of its investments at the conclusion of each fiscal year. The market values noted in this report are sourced from the State Controller’s office for the Local Agency Investment Fund (LAIF) and from the City’s registered investment managers and bond trustees for all other investment vehicles. It is important to acknowledge that these market valuations are subject to daily fluctuations.

The di stinction between market value and historical cost, referred to as Unrealized Investment Gains and Losses, represents temporary variances and does not reflect cash- related transactions. Given that the City intends to hold its investments until maturity, at which point they will be redeemed at par value, any unrealized gains or losses will be reported exclusively at the end of the fiscal year in the City’s Comprehensive Annual Financial Report.

The total cash and investments reported include portions that are designated as unrestricted within the City’s General Fund, amounting to $24.1 million (32%), and the Internal Service Funds, which total $260,748 (0.3%). It is important to note that some of these amounts are committed to existing obligations or are allocated for specific purposes. In contrast, the remaining $49.8 million, or 6 7%, of the City’s cash and investments, is restricted for designated uses in accordance with applicable federal, state, or local regulations.

FISCAL IMPACT:

This is an information report with no fiscal impact.

ATTACHMENTS:

1. Quarterly Investment Report

157
1 INVESTMENT REPORT
For the Quarter Ending March 31, 2025
City of Hercules, California
158

CITY OF HERCULES

FINANCE DEPARTMENT
111 CIVIC DRIVE
HERCULES, CALIFORNIA 94547-1771
PHONE: 510-799-8200
May 13, 2025
Honorable Mayor and City Council:

I hereby affirm that the investment portfolio, as of March 31, 2025, complies with all relevant state laws and conforms to the City’s investment policy. The anticipated revenues from ongoing City operations, coupled with the available liquidity from cash deposits, sufficiently cover the City’s expenditure requirements for the upcoming months.

As of March 31, 2025, the City possesses adequate financial resources to meet its expenditure obligations for the next six months.

Sincerely,
Edwin Gato
Finance Director/City Treasurer
159
City of Hercules, California
Investment Portfolio Summary Report
For the Quarter Ended March 31, 2025
Book % of Average Market
Value Total Yield Value
Cash on Hand $2,005 $2,005
Cash on Deposit 8,605,254 8,605,254
Total Cash on Hand 8,607,259 11.61% 0.00% 8,607,259 Local Agency Investment Fund (LAIF) 57,912,213 78.14% 4.31% 57,961,392 Irrevocable Trust (Pension) 2,491,468 3.36% 5.58% 2,491,468 Irrevocable Trust (OPEB) 3,008,916 4.06% 5.58% 3,008,916 Investments with Bond Trustees 2,090,743 2.82% 4.14% 2,090,743 Total Portfolio $74,110,599 100.00% 4.68% $74,159,778
Amount over (under) Market Value vs. Book Value $49,179 % of Portfolio 0.07%
Investments by Type
Cash on Hand
LAIF
Irrevocable Trust
(Pension)
Irrevocable Trust
(OPEB)
Investments with
Trustees
160
City of Hercules
Detail for Investment Portfolio Summary Report
For the Quarter Ended March 31, 2025
(DAYS)

BOOK MARKET PURCHASE MATURITY LIFE TO REMAINING PAR MARKET

DESCRIPTION VALUE YIELD DATE DATE MATURITY LIFE VALUE VALUE

CASH ON HAND
PETTY CASH 2,005.00 0.00% 2,005.00 $2,005.00

CASH IN BANK
MECHANICS BANK - GENERAL CHECKING 4,465,871.47 0.00% 4,465,871.47 4,465,871.47 MECHANICS BANK - HERCULES RDA 3,945,900.82 0.00% 3,945,900.82 3,945,900.82 MECHANICS BANK - PD ASSET SEIZURE 193,481.40 0.00% 193,481.40 193,481.40 TOTAL AND AVERAGES 8,605,253.69 8,605,253.69 8,605,253.69

LOCAL AGENCY INVESTMENT FUND (LAIF)
LAIF 57,912,213.10 4.31% 1/1/2025 3/31/2025 89 - 57,912,213.10 57,961,391.63

IRREVOCABLE TRUST (PENSION/OPEB)
US BANK MUTUAL (PARS-OPEB) 3,008,916.02 5.58% 1/1/2025 3/31/2025 89 - 3,008,916.02 3,008,916.02 US BANK MUTUAL (PARS-PENSION) 2,491,467.78 5.58% 1/1/2025 3/31/2025 89 - 2,491,467.78 2,491,467.78 TOTAL AND AVERAGES 5,500,383.80 5.58% 89 - 5,500,383.80 5,500,383.80

INVESTMENTS WITH BOND TRUSTEES
THE BANK OF NEW YORK (BNY) JM 05 1 RESERVE
FUND 55,797.47 4.14% 1/1/2025 3/31/2025 89 - 55,797.47 55,797.47

THE BANK OF NEW YORK (BNY) MELLON TRUST
HERCULES PFA WW INTEREST ACCT 21 A 2,887.50 4.14% 1/1/2025 3/31/2025 89 - 2,887.50 2,887.50

THE BANK OF NEW YORK (BNY) MELLON TRUST
(HERCULES PFA 09 REVENUE FUND) 718,892.33 4.14% 1/1/2025 3/31/2025 89 - 718,892.33 718,892.33

THE BANK OF NEW YORK (BNY) MELLON TRUST
(HERCULES PFA 09 DEBT SERV PRIN ACCT) 231,130.59 4.14% 1/1/2025 3/31/2025 89 - 231,130.59 231,130.59

THE BANK OF NEW YORK (BNY) MELLON TRUST
(HERCULES PFA 09 DEBT SERV INT ACCT) 157,252.52 4.14% 1/1/2025 3/31/2025 89 - 157,252.52 157,252.52

THE BANK OF NEW YORK (BNY) MELLON TRUST
(HERCULES PFA 09 RESERVE FD) 920,215.00 4.14% 1/1/2025 3/31/2025 89 - 920,215.00 920,215.00

THE BANK OF NEW YORK (BNY) MELLON TRUST
(HERCULES 2020 INT FD) 4,567.80 4.14% 1/1/2025 3/31/2025 89 - 4,567.80 4,567.80 TOTAL AND AVERAGES 2,090,743.21 4.14% 89 - 2,090,743.21 2,090,743.21 TOTAL INVESTMENT REPORT $74,110,598.80 4.68% 89 - $74,110,598.80 $74,159,777.33 161
City of Hercules, California
Investment Portfolio Summary Report
For the Quarter Ended March 31, 2025
% of
Cash Description Book Value Total
Bond Trustee $2,090,743 3%
Irrevocable Trust 5,500,384 7%
Restricted 42,192,413 57%
General Fund 24,066,311 32%
Internal Service Funds 260,748 0%
Total, Book Value $74,110,599 100%
Restricted:

Wastewater 21,918,385
Successor Housing 5,887,899
Development Impact Fees 4,195,009
Capital Projects 2,949,944
Landscape & Lighting 1,496,504
SB1 RMRA 1,398,873
Gas Tax & Measure J "Street" 1,091,000
Successor Agency 994,354
Solid Waste 935,714
Agency Fund 708,121
Asset Seizure 359,232
COPS Program 257,378
42,192,413
Bond Trustee
3% Irrevocable Trust
7%
Restricted
57%
General Fund
33%
Internal Service Funds
0%
Cash by Fund
162
March 4.313
February 4.333
January 4.366
December 4.434
November 4.477
October 4.518
PMIA Average Life(1): 244
LAIF Fair Value Factor(1): 1.000849191
PMIA Daily(1): 4.30
PMIA Quarter to Date(1): 4.34
LAIF Apportionment Rate(2): 4.48
LAIF Earnings Ratio(2): 0.00012266258268207
LAIF Administrative Cost(1)*:0.26
Treasuries

52.98%
Agencies

26.95%
Certificates of
Deposit/Bank Notes

9.25%
Time
Deposits

3.31%
Commercial
Paper

6.76%
Corporate
Bonds

0.60%
Loans

0.15%
Notes: The apportionment rate includes interest earned on the CalPERS Supplemental Pension Payment pursuant to Government Code 20825 (c)(1) and interest earned on the Wildfire Fund loan pursuant to Public Utility Code 3288 (a). *The percentage of administrative cost equals the total administrative cost divided by the quarterly interest earnings. The law provides that administrative costs are not to exceed 5% of quarterly EARNINGS of the fund. However, if the 13-week Daily Treasury Bill Rate on the last day of the fiscal year is below 1%, then administrative costs shall not exceed 8% of quarterly EARNINGS of the fund for the subsequent fiscal year.

Source:
(1) State of California, Office of the Treasurer
(2) State of California, Office of the Controller
PMIA Average Monthly
Effective Yields(1)
PMIA/LAIF Performance
Report as of 03/31/25
Daily rates are now available here. View PMIA Daily Rates Quarterly Performance
Quarter Ended 3/31/25
Chart does not include $1,138,000.00 in mortgages, which equates to 0.001%. Percentages may not total 100% due to rounding.

Pooled Money Investment Account
Monthly Portfolio Composition (1)
3/31/25
$156.8 billion
163
DIS

CUSSION AND/OR ACTION

AGENDA ITEMS

1. 25-132

2. 25-124

3. 25-131

4. 25-123
164
1 STAFF REPORT TO THE CITY COUNCIL
DATE: Regular Meeting of May 13, 2025
TO: Mayor and Members of the City Council
VIA: Dante Hall, City Manager
SUBMITTED BY: Nanda Gottiparthy, Acting City Engineer
Jeff Brown Interim Public Works Director
SUBJECT: Approve Traffic Calming Improvements on John Muir Parkway between Albert Nobel Drive and the future Bayfront Loop north of Tioga Loop
RECOMMENDED ACTION:

BACKGROUND:

In response to resident safety concerns and excessive speeds on John Muir Parkway , the City hired Traffic Engineering consultant Kimley-Horn to conduct warrant analyses at the intersections of John Muir Parkway/Tioga Loop and John Muir Parkway/Yosemite Place-Tsushima Street to evaluate installing all-way stop control at the two existing side street stop control intersections. Kimley-Horn prepared a memorandum dated February, 14, 2025 with its findings and recommendations for improving traffic safety (See Attachment 2).

Kimley-Horn’s mem orandum concluded that all-way stop -controls do not meet the warrants and that stop signs are not recommended to be installed at the intersections. In order to provide adequate sight distance for southbound vehicles on Yosemite Place to observe westbound vehicles along John Muir Parkway, Kimley -Horn recommended installing approximately 50’ of red striping from the curb return at the near side of Yosemite Place. City crews recently installed the red striping per the recommendation. 25-132
165

2 Financial Impact

Description: John Muir Parkway traffic calming improvements and solicitation of design and construction management proposals from qualified Professionals.

Funding Source: General Fund Capital Reserve

Budget Recap:

Total Estimated cost: $258,000 New Revenue: None
Amount Budgeted: None Lost Revenue: N/A
New funding required: Yes No

Kimley-Horn’s memorandum also recommended additional measure s to reduce speeds and improve safety for vehicular traffic and pedestrians . The additional recommended measures included improvements consisting of new striping, pavement markings , and speed feedback signs as described and shown in Attachment 2. A further recommendation of transverse rumble strips was also explored but ultimately set aside due to the potential for elevated vibration and noise that this treatment could cause.

Repeated exposure to these disruptive elements can be frustrating for nearby residents.

Although included in Attachment 3, staff does not recommend installing traverse rumble strips at this time.

Kimley-Horn’s memorandum and recommended improvements in Attachment 2 were presented to the City Traffic Safety Subcommittee at their April 2, 2025, meeting. The subcommittee recommended the installation of the proposed improvements, including new striping, pavement markings, and speed feedback signs as described and shown in Attachment 2.

FISCAL IMPACT:

Kimley-Horn’s has provided a cost estimate of $258,000 for the design, project management, and construction of the recommended improvements. It is recommended that the General Fund Capital Reserve be utilized to finance this project. Should this recommendation be approved , the project will be incorporated into the FY 2025-26 Capital Improvement Project (CIP) budget for consideration by the City Council.

ATTACHMENTS:

Attachment 1: Resolution – John Muir Pkwy Traffic Calming Attachment 2: Kimley Horn Memorandum Dated February 14, 2025 Attachment 3: Presentation
166

HERCULES CITY COUNCIL RESOLUTION NO. _________

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF HERCULES ,

CALIFORNIA, AUTHORIZING THE CITY MANAGER TO PREPARE THE PLANS AND

BID DOCUMENTS FOR TRAFFIC CALMING IMPROVEMENTS ON JOHN MUIR

PARKWAY BETWEEN ALBERT N OBEL DRIVE AND FUTURE BAYFRONT LOOP

NORTH OF TIOGA LOOP AS RECOMMENDED BY KIMLEY-HORN

WHEREAS, In response to residents ’ concerns regarding speeds on John Muir Parkway, the City hired Traffic Engineering Consultant, Kimley -Horn, to conduct warrant analy ses at the intersections of John Muir Parkway/Tioga Loop and John Muir Parkway/Yosemite Place -Tsushima Street to evaluate installing all -way stop control at the two existing side street stop control intersections; and

WHEREAS, Kimley-Horn prepared a memo randum dated February 14, 2025 with its findings and recommendations for improving traffic safety; and

WHEREAS, Kimley-Horn’s memorandum and recomme nded improvements were presented to the City Traffic Safety Subcommittee at their April 2, 2025 meeting; and

WHEREAS, The subcommittee recommended the installation of the improvements, new striping, pavement markings, and speed feedback signs.

NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Hercules as follows:

1. The City Council hereby authorizes the City Manager to prepare the plans and bid documents for t raffic calming improvements on John Muir Parkway between Albert Nobel Drive and future Bayfront Loop north of Tioga Loo p as recommended by Kimley-Horn.

2. The City Council hereby authorizes the City Manager and Public Works Director to take all actions necessary to effectuate the foregoing.

3. Preparation of the plans and bid doc uments for the proposed improvements is not a “project” under the California Environmental Quality Act (“CEQA”) pursuant to CEQA Guidelines section 15378(b) because it is an administrative action only and it will not result in any direct or indirect impacts to the environment.

The foregoing Resolution was duly and regularly adopted at a regular meeting of the City Council of the City of Hercules held on the 13th day of May, 2025, by the following vote of the Council:

167

AYES:

NOES:

ABSTAIN:

ABSENT:

____________________________
Dion Bailey, Mayor

ATTEST:

________________________________
Eibleis Melendez, City Clerk
168
kimley-horn.com 4637 Chabot Dr., Suite 300, Pleasanton, CA 94588 925-398-4840

MEMORANDUM
To: Jeff Brown
City of Hercules
From: Clara Ho, P.E.

Kimley-Horn and Associates, Inc.

Date: February 14, 2025
Subject:

All-Way Stop-control Warrant at John Muir Parkway and Tioga Loop and John Muir Parkway and Yosemite Place-Tsushima Street, Hercules, CA Kimley-Horn and Associates, Inc. (Kimley-Horn) is working with the City of Hercules (City) to evaluate the installation of multi-way stop-control at the intersections of John Muir Parkway and Tioga Loop and John Muir Parkway and Yosemite Place-Tsushima Street. The evaluation is being completed due to concerns with limited intersection sight distance caused by horizontal curves and on-street parking along John Muir Parkway, as well as the difficulty in crossing or turning onto John Muir Parkway due to the high number of through vehicles travelling along John Muir Parkway.

Both intersections currently operate as side-street stop-controlled with a stop-control on the southbound approach of Tioga Loop and southbound and northbound approaches of Yosemite Place and Tsushima Street, respectively. There is a horizontal curve between Tioga Loop and Yosemite Place-Tsushima Street which potentially limits the intersection sight distance for vehicles exiting both intersections. On-street parking is allowed on the north side and on the south side of John Muir Parkway, near the intersection, which reduces the intersection sight distance available for vehicles exiting Yosemite Place and Tsushima Street. The intersection is located near uses that generate pedestrian activity, including retail and recreational trails to the west and residential on the north.

These uses increase pedestrian activity at the study intersections during the peak periods. The goal of this study is to enhance the overall safety of the intersection by implementing a multi-way stop- control or recommending other measures to improve the overall intersection operations if a multi-way stop-control is not warranted. As a result, a multi-way stop sign warrant analysis and sight distance analysis were conducted at the intersections of John Muir Parkway and Tioga Loop and John Muir Parkway and Yosemite Place-Tsushima Street to determine the proposed measures that should be implemented at each study intersection.

DATA COLLECTION AND METHODOLOGY
Roadway volumes were collected for twenty-four (24) hours on Thursday, November 14 th, 2024 between Tioga Loop and Yosemite Place-Tsushima Street, and roadway and speed volumes at the remaining legs of both intersections were collected on Thursday, January 9 th and Saturday, January 11th, 2025 for twenty-four (24) hours. Intersection turning movement volumes were also collected on Thursday, January 9 th, 2025 during the AM peak period from 7:00 AM to 9:00 AM and PM peak 169

Page 2 ends

Hercules City CouncilMay 13, 2025

Hercules City Council
May 13, 2025