Agenda packet — Vacaville City Council, April 28, 2026 (part 1 of 2)

City of Vacaville Agenda for the City Council,
Successor Agency to the Redevelopment
Agency, Housing Authority,
Groundwater Sustainability Agency and
Public Financing Authority
Tuesday, April 28, 2026
05:00 PM
Vacaville City Hall Council Chamber
650 Merchant Street
Entrance to the council Chamber is located
in the parking area off of Walnut Avenue
___________________________________________________________________________ The City of Vacaville is committed to providing meeting facilities that are accessible to persons with disabilities.

Council meetings can be viewed live on the City of Vacaville's website at www.cityofvacaville.com (select the link to view the meeting from the Agenda/Minutes page), on the City’s YouTube account, or Cable Channel 26. Comments on agenda items can be emailed to the City Clerk up to 3:30p.m. prior to the meeting by emailing [email protected]. Please include the item number on which you wish to comment. Written comments will be provided to the City Council for consideration before Council action and will be made available to the public for review. Comments received are kept as part of the record of the meeting. In compliance with the Americans with Disabilities Act, if you need special assistance, please contact the City Clerk’s Office at (707) 449-5100.

All items on the agenda can be opened for public comment before final action is taken. After staff has presented the item, the Mayor will open the matter for comments from the public. Items on the Consent Calendar are routine business items that require no discussion and are acted upon in one motion. However, any item on the Consent Calendar can be removed and discussed separately upon request. The item “Business from the Floor” is the time to address the Council on matters that are not on the agenda and are within the Council’s subject matter jurisdiction.

Comments should be kept to a maximum of three minutes per speaker or group spokesperson (per Government Code § 54954.3(a); VMC §2.0.4.130); the Mayor has the discretion to change the time limit to accommodate the meeting schedule and public interest.

Gov. Code § 84308 (Levine Act): Parties to any proceeding involving a license, permit, or other entitlement for use pending before the City Council must disclose any campaign contribution over $500 (aggregated) within the preceding 12 months by the party, their agent, and those required to be aggregated with their contributions under Gov. Code § 82015.5. The disclosure must include the amount contributed and the name(s) of the contributor(s). "Levine Act: Yes" on this agenda indicates that the item is subject to these regulations.

Closed Session
Pursuant to California Government Code Section 54950, et seq.

Roll Call for the Regular Meeting
Mayor/Chair John Carli
Vice Mayor/Vice-Chair Michael Silva, District 3
Council/Agency/Authority Member Roy Stockton, District 1 Council/Agency/Authority Member Greg Ritchie, District 2 Council/Agency/Authority Member Sarah Chapman, District 4 Council/Agency/Authority Member Ted Fremouw, District 5

1. 2.

Council/Agency/Authority Member Jeanette Wylie, District 6 Moment of Silence followed by the Pledge of Allegiance
Report out of Closed Session
Approval of Agenda
Reports of the City Council
Update on Recent Attended Boards, Commissions, and Committee Meetings Reports of City Manager
Presentations
Building Safety Month Proclamation
(Staff contact: Aleris Dunn, Chief Building Official (707) 449-5342) Consent Calendar
Ordinance Levying Special Tax within the City of Vacaville Community Facilities District No. 11 (Southtown Police and Fire Services), Including Certain Annexation Territory, City of Vacaville Community Facilities District No. 11 (Southtown Police and Fire Services) Annexation No. 8 (Vandengate) (Second Reading) (Staff Contact: Ken Matsumiya, Director of Finance (707) 449-5180) Recommended Action: By simple motion, adopt Ordinance Levying Special Tax within Community Facilities District No. 11, including the annexation territory.

Fiscal Impact:

Amount Requested: Not applicable
Funding Source: Not applicable
Budget Distribution: Not applicable
Strategic Plan Goal/Initiative:

Goal #2 - Strengthen the Local Economy
Initiative 2B - Manage Impacts from Growth
Goal #4 - Maintain Effective and Efficient Services
Levine Act: No
Ordinance Levying Special Tax within the City of Vacaville Community Facilities District No. 12 (Police and Fire Services), Including Certain Annexation Territory, City of Vacaville Community Facilities District No. 12 (Police and Fire Services) Annexation No. 6 (Vanden Cove Phase 1) (Second Reading) (Staff Contact: Ken Matsumiya, Director of Finance (707) 449-5180) Recommended Action: By simple motion adopt Ordinance Levying Special Tax within Community Facilities District No. 12, including the annexation territory.

Fiscal Impact:

Amount Requested: Not applicable

3. 4.

5. 6.

6.a

7. 8.

8.a

9. 9.a

9.b
Tuesday, April 28, 2026
Funding Source: Not applicable
Budget Distribution: Not applicable
Strategic Plan Goal/Initiative:

Goal #2 - Strengthen the Local Economy
Initiative 2B - Manage Impacts from Growth
Goal #4 - Maintain Effective and Efficient Services
Levine Act: No
Resolution Approving the Final Map for Lagoon Valley Neighborhood L (Staff Contact: Chris Gioia, Public Works Engineering Manager (707) 449-5160) Individual Action: By simple motion, adopt the subject resolution.

Fiscal Impact:

Amount Requested: There are no funds requested for this item.

Funding Source: Public Works - Development Engineering (2028) Budget Distribution: The budget for any expenses related to this item is included in the Public Works - Development Engineering annual operating budget.

Strategic Plan Goal/Initiative:

Goal #3: Protect Vacaville's Quality of Life
Initiative 3A: Promote Housing for All
Levine Act: Yes
Resolution Accepting the Energy Conservation Services Project (Staff Contact: Jacob Smith, Construction Manager (707) 449-5429) Individual Action: Adopt the subject resolution
Fiscal Impact:

Amount Requested: No funds are requested for this item.

Funding Source: Not applicable
Budget Distribution: Not applicable
Strategic Plan Goal/Initiative:

Goal #3: Protect Vacaville's Quality of Life
Goal #4: Maintain Effective and Efficient Services
Initiative 4A: Ensure Fiscal Sustainability
Levine Act: No
Resolution Accepting Public Improvements for the 2025 Slurry Seal Project (Staff Contact: Jacob Smith, Construction Manager (707) 449-5429) Individual Action: By simple motion, adopt the subject resolution.

Fiscal Impact:

Amount Requested: There are no additional funds requested for this item.

Funding Source: Measure M (1002) and Gas Tax (4010)
Budget Distribution: The budget for this project is included in the Capital Improvement Project account #820384, and sufficient funding exists in the project account.

Strategic Plan Goal/Initiative:

Goal #4 - Maintain Effective and Efficient Services
Levine Act: No
Resolution Adopting Revised Construction Standards, Design Standards, and

9.c

9.d

9.e

9.f
Tuesday, April 28, 2026
Standard Drawings for Potable Water and Sanitary Sewer Systems (Staff Contact: Matthew Freese, Engineering Manager of Utilities (707) 469-4124) Individual Action: By simple motion, adopt the subject resolution.

Fiscal Impact:

Amount Requested: None
Funding Source: Not applicable
Budget Distribution: Not applicable
Strategic Plan Goal/Initiative:

Goal #4 - Maintain Effective and Efficient Services
Initiative 4A - Ensure Fiscal Sustainability
Goal #3 - Protect Vacaville's Quality of Life
Initiative 3B: Maintain and Enhance Infrastructure
Levine Act: No
Approval of Minutes – Approve the Minutes for the Meeting of April 14,2026 Approval of Accounts Payable and Payroll Payment of Claims for the Weeks Ending April 10, 2026; and April 17, 2026
Business from the Floor
This is the time to address the Council with issues that are not on the agenda that are within the Council’s subject matter jurisdiction. With certain exceptions, the City Council may not discuss or take action on items that are not on the agenda. Members of the audience wishing to address a specific agendized item are encouraged to offer their public comment during consideration of that item.

Comment is limited to three minutes per speaker or group spokesperson per Government Code §54954.3(a); VMC §2.04.130.

Public Hearings
Business
(Staff Contact: )
Recommended Action:

Fiscal Impact:

Amount Requested:

Funding Source:

Budget Distribution:

Strategic Plan Goal/Initiative:

Levine Act:

Consideration and Selection of Parks and Recreation Commissioner (Staff Contact: Michelle Thornbrugh, City Clerk (707) 449-5100) Recommended Action: Mayor appoint one member to the Parks and Recreation Commission, subject to Council ratification.

Fiscal Impact:

Amount Requested: None
Funding Source: City Clerk (1001)

9.g

9.h

10. 11.

12. 12.a
Tuesday, April 28, 2026
Budget Distribution: The budget for any expenses related to this item is included in the City Manager's annual operating budget.

Strategic Plan Goal/Initiative:

Goal #4 - Maintain Effective and Efficient Services
Levine Act: No
City of Vacaville Capital Improvement Program – Understanding an Essential City Program
(Staff Contact: Brian Oxley, Director of Public Works (707) 449-5313) Recommended Action: Council receive the information
Fiscal Impact:

Amount Requested: There are no funds requested for this item.

Funding Source: Not applicable
Budget Distribution: The costs of staff time associated with this item are covered within existing Public Works operating budgets.

Strategic Plan Goal/Initiative:

Goal #4: Maintain Effective and Efficient Services
Levine Act: No
Resolution Establishing the City's General Liability Self-Insured Retention (SIR) Level for Program Year 2026/27
(Staff contact: Rachel Carranza, Legal Services Manager, (707) 449-6127) Recommended Action: By simple motion, adopt the subject resolution.

Fiscal Impact:

Amount Requested: There are no funds requested for this item.

Funding Source: Risk Management / General Fund (as applicable per existing budget allocations).

Budget Distribution: The budget for any expenses related to this item is included in the City Council annual operating budget.

Strategic Plan Goal/Initiative:

Goal #4 – Maintain Effective and Efficient Services
Levine Act: No
Adjournment
All public records relating to an open session item that are not exempt from disclosure pursuant to the Public Records Act and that are distributed to a majority of the City Council will be available for public inspection during normal business hours at the City Administration Counter at City Hall, 650 Merchant Street. The City may charge customary photocopying charges for requested copies of such documents.

This agenda and related materials may also be available on the City's website under Public Meetings and Agendas' subject to our staff's ability to pose the documents prior to the meeting. To view City Council meetings, tune in to cable Channel 26, or log onto the City's website at www.cityofvacaville.com to watch the meeting live or on-demand. If you have any questions, please contact the City Clerk's office at (707) 449-5100.

I declare that the agenda for the Regular Meeting of the City Council/Successor Agency to the Redevelopment Agency/Groundwater Sustainability Agency/Public Financing Authority was posted

12.b

12.c

13. Tuesday, April 28, 2026
and available for review by the time and place prescribed by law. ______________________________
Michelle A. Thornbrugh, City Clerk
Tuesday, April 28, 2026

CITY OF VACAVILLE
City Council
Staff Report Item 9.A
Meeting Date: April 28, 2026
To: Honorable Mayor and City Council Members
Attention: Savita Chaudhary, City Manager
From: Director Ken Matsumiya, Finance
(Ken Matsumiya, Director of Finance (707) 449-5180)
Subject: Ordinance of the City Council of the City of Vacaville to levy special tax within the City of Vacaville Community Facilities District No. 11 (Southtown Police and Fire Services), including certain annexation territory, City of Vacaville Community Facilities District No. 11 (Southtown Police and Fire Services) Annexation No. 8 (Vandengate) (Second Reading)
Actions for Consideration:

The City Council is being asked to consider the final legislative action for the eighth annexation of territory into the existing Community Facilities District No. 11. The territory comprises a portion of a larger 72-unit single-family detached home development known as “Vandengate,” which is being developed by Discovery Builders, Inc. (Developer). Annexation into Community Facilities District No. 11 is a condition for development of Vandengate.

A special annexation election was held on April 14, 2026, followed by the announcement of results and the introduction of the subject Ordinance.

Recommendations:

By simple motion, adopt the subject ordinance.

Background:

The portion of the Vandengate development proposed to be annexed into Community Facilities District No. 11 contains approximately 6.31 acres and is designated for development with 42 single-family detached homes. The property is generally located east of Vanden Road and south of Joyce Drive. The map of the annexed territory is included as Attachment 1.

Consistent with the General Plan Policy to pay for impacted services, an obligation to join a Community Facilities District was a condition of approval for the Vandengate development. In this case, the condition requires that the property annex into Community Facilities District No. 11.

Item 9.a
The purpose of Community Facilities District No. 11 is to provide a funding mechanism to pay the cost of providing police and fire services to the property within Community Facilities District No. 11. The maximum special tax rate for FY 2025-26 is $2,577.43, which is the most the City is authorized to charge per single-family detached property. The maximum special tax rate is adjusted annually based on the change in the San Francisco-Oakland-Hayward Consumer Price Index. The City is currently charging an actual special tax rate of $2,152.48; this lower amount was used to calculate the anticipated fiscal impact since it is what would actually be collected.

The annexation process consists of four legislative actions along with the necessary follow up proceedings, such as recordation and publication notices. In summary, the four actions are:
1) Resolution of Intention. The Council adopted this action as Resolution No. 2026- 031 on February 24, 2026. This resolution described the territory to be annexed into Community Facilities District No. 11 and approved the annexation map for the territory; described the police and fire protection services to be provided by Community Facilities District No. 11; described the special taxes and the rate and method of apportionment of special tax for Community Facilities District No. 11; and set a time and place for a public hearing regarding the proposed annexation for tonight’s meeting.
2) Resolution Submitting Annexation of Territory and Levy of Tax to Qualified Electors. The Council adopted this action as Resolution No. 2026-064 at the conclusion of the public hearing on April 14, 2026. This resolution submitted to the landowner voters the questions of annexing the territory to Community Facilities District No. 11 and levying the special taxes within the territory. Because the property owner has waived the time frame for holding the election, the election was held and the ballots were opened immediately following adoption of this resolution. 3) Resolution Declaring Results of Special Annexation Election. The Council adopted this action as Resolution No. 2026-065 following the announcement of the results of the landowner election. This resolution formally declared the results of the landowner election, confirmed the annexation of the territory into Community Facilities District No. 11, and directed the recordation of an amendment to the notice of special tax lien for Community Facilities District No. 11. 4) Ordinance Levying Special Taxes. This ordinance was introduced as the final action during the annexation item on April 14. The ordinance orders the levy of special taxes to pay for authorized services within the territory and provides for the special taxes to be collected on the County property tax rolls. The second reading and adoption will occur at tonight’s meeting.

Discussion:

Tonight’s adoption of the ordinance will complete the process for the eighth annexation of territory into the existing Community Facilities District No. 11.

Item 9.a
Environmental Impact:

This action is exempt from the California Environmental Quality Act (CEQA) because it is not a project that has the potential to result in either a physical change in the environment or a reasonably foreseeable indirect physical change in the environment, pursuant to California Code of Regulations Title 14 Section 15378(b)(5).

Fiscal Impact:

Based on FY 2025-26 actual rates, the subject development, at build-out, would generate approximately $90,404 per year to the general fund to provide police and fire services to the property within Community Facilities District No. 11.

Amount Requested: Not applicable
Funding Source: Community Facilities District No. 11 (2303) Budget Distribution: Any additional funding as a result of this action will be deposited into CFD 11 (2303.00.0000.4002)
Alternatives:

No alternative recommendation.

Strategic Plan Goal/Initiative:

Goal 2: Strengthen the Local Economy
Goal 4: Maintain Effective and Efficient Services
Levine Act:

No
Attachments:

Ordinance – Action Item
Attachment 1: Annexation Map (CFD No.11 Annexation No. 8) Item 9.a
ORDINANCE NO. 2026-____________

ORDINANCE OF THE CITY COUNCIL OF THE CITY OF VACAVILLE

LEVYING SPECIAL TAX WITHIN THE CITY OF VACAVILLE COMMUNITY FACILITIES DISTRICT NO. 11 (SOUTHTOWN POLICE AND FIRE SERVICES),

INCLUDING CERTAIN ANNEXATION TERRITORY

CITY OF VACAVILLE
Community Facilities District No. 11
(Southtown Police and Fire Services)
Annexation No. 8
(Vandengate)
WHEREAS, the City of Vacaville (the “City”) has conducted proceedings pursuant to the Mello-Roos Community Facilities Act, Chapter 2.5 of Part 1 of Division 2 of Title 5, commencing with Section 53311, of the California Government Code (the “Act”) to establish “City of Vacaville Community Facilities District No. 11 (Southtown Police and Fire Services)” (the “CFD”) for the purpose of funding certain municipal services (the “Services”) as provided in the Act; and WHEREAS, on February 24, 2026, this City Council, acting as legislative body of the CFD, adopted Resolution No. 2026-31 entitled “Resolution of the City Council of the City of Vacaville Declaring its Intention to Annex Territory to a Community Facilities District” (the “Resolution of Intention to Annex”) stating its intention to annex certain territory (the “Annexation Territory”), to the CFD pursuant to the Act; and
WHEREAS, a copy of the Resolution of Intention to Annex, incorporating a description of the proposed boundaries of the Annexation Territory, the types of public services to be funded by the CFD (the “Services”), and the rate and method of apportionment (the “Rate and Method”) of the special tax (the “Special Taxes”) to be levied within the Annexation Territory to pay for the Services, is on file with the City Clerk, and the provisions thereof are fully incorporated herein by this reference as if fully set forth herein; and
WHEREAS, the existing Rate and Method among the parcels of real property within the existing territory of the CFD, as described in an exhibit to Resolution No. 2006-10, entitled “A Resolution of Formation of Community Facilities District,” adopted by the Council on January 24, 2006 (the “Resolution of Formation”), will not be altered in connection with the proposed annexation; and
WHEREAS, following an election of the qualified electors in the territory proposed for annexation (the “Annexation Territory”), the City Council, on April 14, 2026, adopted its resolution entitled “Resolution of the City Council of the City of Vacaville Declaring Results of Special Annexation Election, Determining Validity of Prior Proceedings, and Directing Recording of an Amended and Restated Notice of Special Tax Lien”; and
WHEREAS, the Special Tax has previously been levied in the original territory of the CFD pursuant to Ordinance No. 1757, passed and adopted by the City Council on February 14, 2006, and as subsequently amended (“Ordinance No. 1757”); and WHEREAS, this Ordinance supplements Ordinance No. 1757 in order to levy the Special Taxes on the Annexation Territory pursuant to the Rate and Method.

Item 9.a
2 THE CITY COUNCIL OF THE CITY OF VACAVILLE DOES ORDAIN as follows:

SECTION ONE: By the passage of this Ordinance, pursuant to the Act, the City Council hereby authorizes and levies the Special Tax on the Annexation Territory within the CFD in accordance with the Rate and Method, which by this reference is incorporated herein, commencing in fiscal year 2026-27 and in each fiscal year thereafter to pay for the Services for the CFD and all costs of administering the CFD. The Special Tax levied on the Annexation Territory pursuant to this Ordinance shall be combined with the Special Tax levied on the remaining property in the CFD to pay for the Services. The City Council hereby ratifies the levy of special taxes within the CFD pursuant to Ordinance No. 1757 and the Act.

SECTION TWO: The City Manager or designee, or an employee or consultant of the City, is hereby authorized and directed each fiscal year to determine the specific Special Tax to be levied for the next ensuing fiscal year for each parcel of real property within the CFD, including the Annexation Territory, in the manner and as provided in the Rate and Method.

SECTION THREE: Exemptions from the levy of the Special Tax shall be as provided in the Resolution of Formation, the Rate and Method and the applicable provisions of the Act. In no event shall the Special Tax be levied on any parcel within the CFD in excess of the maximum Special Tax specified in the Rate and Method.

SECTION FOUR: All of the collections of the Special Tax shall be used as provided in the Act and in the Resolution of Formation, including, but not limited to, the payment of costs of the Services, the payment of the costs of the City in administering the CFD, and the costs of collecting and administering the Special Tax.

SECTION FIVE: The Special Tax shall be collected in the same manner as ordinary ad valorem taxes are collected and shall have the same lien priority, and be subject to the same penalties and the same procedure and sale in cases of delinquency as provided for ad valorem taxes; provided, however, that the City Council may provide for other appropriate methods of collection by resolution(s) of the City Council. The City Manager of the City (or the City Manager’s designee) is hereby authorized and directed to provide all necessary information to the auditor/tax collector of the County of Solano in order to effect proper billing and collection of the Special Tax, so that the Special Tax for the Annexation Territory shall be included on the secured property tax roll of the County of Solano for fiscal year 2026-27 and for each fiscal year thereafter, as set forth in Section One above, for the period set forth in the Rate and Method.

SECTION SIX: If for any reason any portion of this Ordinance is found to be invalid, or if the Special Tax is found inapplicable to any particular parcel within the CFD, including the Annexation Territory, by a court of competent jurisdiction, the balance of this Ordinance and the application of the Special Tax to the remaining parcels within the CFD, including all territory annexed to the CFD prior to the date hereof, including the Annexation Territory, shall not be affected.

SECTION SEVEN: The Mayor shall sign this Ordinance and the City Clerk shall cause the same to be published immediately after its passage at least once in a newspaper of general circulation circulated in the City.

SECTION EIGHT: This City Council affirms the provisions of Ordinance No. 1757 except to the extent any terms of such Ordinance are inconsistent with the provisions of this Ordinance as to the Annexation Territory, in which case the terms of this Ordinance shall govern.

Item 9.a
3 SECTION NINE: This Ordinance shall become effective 30 days following its passage and adoption and shall be published once within 15 days upon passage and adoption in a newspaper of general circulation in the City of Vacaville, County of Solano.

I HEREBY CERTIFY that this ordinance was introduced at a regular meeting of the City Council of the City of Vacaville, held on April 14, 2026, and ADOPTED and PASSED at a regular meeting of the City Council of the City of Vacaville held on April 28, 2026, by the following vote:

AYES:

NOES:

ABSENT:

ATTEST:
___________
Michelle A. Thornbrugh, City Clerk
Dated: ________________

Item 9.a
Item 9.a

CITY OF VACAVILLE
City Council
Staff Report Item 9.B
Meeting Date: April 28, 2026
To: Honorable Mayor and City Council Members
Attention: Savita Chaudhary, City Manager
From: Director Ken Matsumiya, Finance
(Ken Matsumiya, Director of Finance (707) 449-5180)
Subject: Ordinance of the City Council of the City of Vacaville to levy special tax within the City of Vacaville Community Facilities District No. 12 (Police and Fire Services), Including certain annexation territory, City of Vacaville Community Facilities District No. 12 (Police and Fire Services) Annexation No. 6 (Vanden Cove Phase 1)
Actions for Consideration:

The City Council is being asked to consider the final legislative action for the sixth annexation of territory into the existing Community Facilities District No. 12. The territory comprises a portion of the 114-unit single-family detached home development known as “Vanden Cove,” which is being developed by Discovery Builders, Inc. (Developer). Annexation into Community Facilities District No. 12 is a condition for development of Vanden Cove.

A special annexation election was held on April 14, 2026, followed by the announcement of results and the introduction of the subject Ordinance.

Recommendations:

By simple motion, adopt the subject ordinance.

Background:

The portion of the Vanden Cove development proposed to be annexed into Community Facilities District No. 12 contains approximately 4.20 acres and is designated for development with 30 single-family detached homes. The property is generally located at the corner of Vanden Road and Providence Place. The map of the annexed territory is included as Attachment 1.

Consistent with the General Plan Policy to pay for impacted services, an obligation to join a Community Facilities District was a condition of approval for the Vanden Cove development. In this case, the condition requires that the property annex into Community Facilities District No.

12. Item 9.b
The purpose of Community Facilities District No. 12 is to provide a funding mechanism to pay the cost of providing police and fire services to the property within Community Facilities District No. 12. The FY 2025-26 rate is $1,517.07 per single-family detached property. The special tax rate is adjusted annually based on the change in the San Francisco-Oakland-Hayward Consumer Price Index.

The annexation process consists of four legislative actions along with the necessary follow up proceedings, such as recordation and publication notices. In summary, the four actions are:
1) Resolution of Intention. The Council adopted this action as Resolution No. 2026- 030 on February 24, 2026. This resolution described the territory to be annexed into Community Facilities District No. 12 and approved the annexation map for the territory; described the police and fire protection services to be provided by Community Facilities District No. 12; described the special taxes and the rate and method of apportionment of special tax for Community Facilities District No. 12; and set a time and place for a public hearing regarding the proposed annexation for tonight’s meeting.
2) Resolution Submitting Annexation of Territory and Levy of Tax to Qualified Electors. The Council adopted this action as Resolution No. 2026-066 at the conclusion of the public hearing on April 14, 2026. This resolution submitted to the landowner voters the questions of annexing the territory to Community Facilities District No. 12 and levying the special taxes within the territory. Because the property owner has waived the time frame for holding the election, the election was held and the ballots were opened immediately following adoption of this resolution. 3) Resolution Declaring Results of Special Annexation Election. The Council adopted this action as Resolution No. 2026-067 following the announcement of the results of the landowner election. This resolution formally declared the results of the landowner election, confirmed the annexation of the territory into Community Facilities District No. 12, and directed the recordation of an amendment to the notice of special tax lien for Community Facilities District No. 12. 4) Ordinance Levying Special Taxes. This ordinance was introduced as the final action during the annexation item on April 14. The ordinance orders the levy of special taxes to pay for authorized services within the territory and provides for the special taxes to be collected on the County property tax rolls. The second reading and adoption will occur at tonight’s meeting.

Discussion:

Tonight’s adoption of the ordinance will complete the process for the sixth annexation of territory into the existing Community Facilities District No. 12.

Item 9.b
Environmental Impact:

Fiscal Impact:

Based on FY 2025-26 rates, the subject development, at build-out, would generate approximately $172,946 per year to the general fund to provide police and fire services to the property within Community Facilities District No. 12.

Amount Requested: Not applicable
Funding Source: Community Facilities District No. 12 (2301) Budget Distribution: Any additional funding as a result of this action will be deposited into CFD 12 (2301.00.0000.4002)
Alternatives:

No alternative recommendation.

Strategic Plan Goal/Initiative:

Goal 2: Strengthen the Local Economy
Goal 4: Maintain Effective and Efficient Services
Levine Act:

No
Attachments:

Ordinance – Action Item
Attachment 1: Annexation Map (CFD No.12 Annexation No. 6) Item 9.b
ORDINANCE NO. 2026-_____

ORDINANCE OF THE CITY COUNCIL OF THE CITY OF VACAVILLE

LEVYING SPECIAL TAX WITHIN THE CITY OF VACAVILLE COMMUNITY FACILITIES DISTRICT NO. 12 (POLICE AND FIRE SERVICES), INCLUDING

CERTAIN ANNEXATION TERRITORY

CITY OF VACAVILLE
Community Facilities District No. 12
(Police and Fire Services)
Annexation No. 6
(Vanden Cove Phase 1)
WHEREAS, the City of Vacaville (the “City”) has conducted proceedings pursuant to the Mello-Roos Community Facilities Act, Chapter 2.5 of Part 1 of Division 2 of Title 5, commencing with Section 53311, of the California Government Code (the “Act”) to establish “City of Vacaville Community Facilities District No. 12 (Police and Fire Services)” (the “CFD”) for the purpose of funding certain public services (the “Services”) as provided in the Act; and WHEREAS, on February 24, 2026, this City Council, acting as legislative body of the CFD, adopted Resolution No. 2026-030 entitled “Resolution of the City Council of the City of Vacaville Declaring its Intention to Annex Territory to a Community Facilities District” (the “Resolution of Intention to Annex”) stating its intention to annex certain territory (the “Annexation Territory”), to the CFD pursuant to the Act; and
WHEREAS, a copy of the Resolution of Intention to Annex, incorporating a description of the proposed boundaries of the Annexation Territory, the types of public services to be funded by the CFD (the “Services”), and the rate and method of apportionment (the “Rate and Method”) of the special tax (the “Special Taxes”) to be levied within the Annexation Territory to pay for the Services, is on file with the City Clerk, and the provisions thereof are fully incorporated herein by this reference as if fully set forth herein; and
WHEREAS, the existing Rate and Method among the parcels of real property within the existing territory of the CFD, as described in an exhibit to Resolution No. 2006-102, entitled “A Resolution of Formation of Community Facilities District,” adopted by the Council on July 25, 2006 (the “Resolution of Formation”), will not be altered in connection with the proposed annexation; and
WHEREAS, following an election of the qualified electors in the Annexation Territory held on April 14, 2026, the City Council adopted its resolution entitled “Resolution of the City Council of the City of Vacaville Declaring Results of Special Annexation Election, Determining Validity of Prior Proceedings, and Directing Recording of an Amended and Restated Notice of Special Tax Lien”; and
WHEREAS, the Special Tax has previously been levied in the original territory of the CFD pursuant to Ordinance No. 1764, passed and adopted by the City Council on August 8, 2006, and as subsequently amended (“Ordinance No. 1764”); and
WHEREAS, this Ordinance supplements Ordinance No. 1764 in order to levy the Special Taxes on the Annexation Territory pursuant to the Rate and Method.

Item 9.b

THE CITY COUNCIL OF THE CITY OF VACAVILLE DOES ORDAIN as follows:

SECTION ONE: By the passage of this Ordinance, pursuant to the Act, the City Council hereby authorizes and levies the Special Tax on the Annexation Territory within the CFD in accordance with the Rate and Method, which is hereby incorporated by this reference, commencing in fiscal year 2026-27 and in each fiscal year thereafter to pay for the Services and all costs of administering the CFD. The Special Tax levied on the Annexation Territory pursuant to this Ordinance shall be combined with the Special Tax levied on the remaining property in the CFD to pay for the Services. The City Council hereby ratifies the prior levy of special taxes within the CFD pursuant to Ordinance No. 1764 and the Act.

SECTION THREE: Exemptions from the levy of the Special Tax shall be as provided in the Resolution of Formation, the Rate and Method, and the applicable provisions of the Act. In no event shall the Special Tax be levied on any parcel within the CFD in excess of the maximum Special Tax specified in the Rate and Method.

SECTION SIX: If for any reason any portion of this Ordinance is found to be invalid, or if the Special Tax is found inapplicable to any particular parcel of the Annexation Territory within the CFD by a court of competent jurisdiction, the balance of this Ordinance and the application of the Special Tax to the remaining parcels of the Annexation Territory within the CFD shall not be affected.

SECTION EIGHT: This City Council affirms the provisions of Ordinance No. 1764 as to all of the property in the CFD other than the Annexation Territory, except to the extent any terms of such Ordinance are inconsistent with the provisions of this Ordinance as to the Annexation Territory, in which case the terms of this Ordinance shall govern.

Item 9.b

SECTION NINE: This Ordinance shall become effective 30 days following its passage and adoption and shall be published once within 15 days upon passage and adoption in a newspaper of general circulation in the City of Vacaville, County of Solano.

I HEREBY CERTIFY that this ordinance was introduced at a regular meeting of the City Council of the City of Vacaville, held on April 14, 2026, and ADOPTED AND PASSED at a regular meeting of the City Council of the City of Vacaville held on April 28, 2026, by the following vote:

AYES:

NOES:

ABSENT:

ATTEST:
___________
Michelle A. Thornbrugh, City Clerk
Item 9.b
Item 9.b

CITY OF VACAVILLE
City Council
Staff Report Item 9.C
Meeting Date: April 28, 2026
To: Honorable Mayor and City Council Members
Attention: Savita Chaudhary, City Manager
From: Brian Oxley, Director of Public Works
(Chris Gioia, Engineering Manager (707) 449-5160)
Subject: Resolution of the City Council of the City of Vacaville to Approve the Final Map for Lagoon Valley Neighborhood L
Actions for Consideration:

Approve the final map associated with the master planned Lower Lagoon Valley Neighborhood L development.

Recommendations:

By simple motion, adopt the subject resolution.

Background:

General Development Process
The process of developing and improving land involves several steps, all of which are regulated by the State of California Subdivision Map Act which provides the procedural steps and legal framework around land development to ensure consistency statewide. The City of Vacaville’s Municipal Code mirrors the Subdivision Map Act while providing further direction and specific details relative to the City of Vacaville.

The subdivision land development process starts when a land developer submits a Tentative Map when proposing a parcel for development. The purpose of a Tentative Map is to show the design and improvements being proposed by the developer for a subdivision. A developer may choose the map to be approved as a Vesting Tentative Map, which is utilized to establish the City standards to which the development will be held.

The developer will then submit a Final Map once the City approves the Tentative Map or Vesting Tentative Map. The purpose of the Final Map is to create legal lots for the subdivision and improvement plans that specify the infrastructure improvements (water and sewer, storm drainage, streets, sidewalks, etc.). Both the Final Map and infrastructure improvement plans are reviewed by City staff to ensure technical correctness and consistency with the Tentative Map or Vesting Tentative Map, conditions of approval, and City standards.

Item 9.c
Once the Final Map has been reviewed and improvement plans have been approved by the City Engineer, the developer is required to construct the subdivision improvements or enter into a Subdivision Improvement Agreement (SIA) or Public Improvement Agreement (PIA) to ensure their construction to City standards and in accordance with the approved improvement plans.

Amongst contractual terms, the SIA or PIA details the infrastructure improvements to be constructed by the developer in accordance with the approved improvement plans.

As the last step in the Subdivision Map Act process, the Final Map is brought before the City Council for consideration of approval; with the City Council authorization, the Final Map is subsequently recorded with the County. On completion of recording by the County, and construction and substantial completion of the public infrastructure improvements, building permits can be issued allowing the developer to begin constructing homes.

Lower Lagoon Valley Development Project
The Lower Lagoon Valley Development (Lagoon Valley Project or Project) is located south of Lagoon Valley Boulevard and east of Nelson Road. On February 22, 2005, the City Council considered and approved the Lower Lagoon Valley Policy Plan Implementation Project which set in motion the master planned Lower Lagoon Valley development (Attachment 1 – Project Vicinity Map). At the same City Council meeting, the Lower Lagoon Valley Vesting Tentative Map was approved (Attachment 2 – Lower Lagoon Valley Vesting Tentative Map).

The developer, Triad Lagoon Valley, LLC (Triad), has spent the last 8 years constructing Project infrastructure including the sanitary sewer lift station, water booster pump station, water storage reservoir, northern backbone utilities, Southern Offsite Utilities, Neighborhood A/B Phase 1, Neighborhood A/B Phase 2, Neighborhood K Phase 1, Neighborhood K2/L, Neighborhood C, Neighborhood D Phase 1, Neighborhood E, Lagoon Valley Boulevard, Drainage H & F/G Mitigation, and Rivera Road Waterline and Sewer Extension.

Triad has recorded a final map (Attachment 3 – Lower Lagoon Valley Neighborhood K2 Final Map) for Neighborhood K2, which created a “Future Neighborhood L” lot, and entered into an (SIA) with the City for the construction of improvements associated with Lower Lagoon Valley Neighborhoods K2/L. Triad has also paid the necessary fees, posted the required bonds and has begun construction of the associated improvements for Neighborhood K2/L. Such improvements include those to serve the subject Neighborhood L (Attachment 4 - Lower Lagoon Valley Neighborhood L Project Vicinity Map).

Discussion:

Neighborhood L is approximately 3.67 acres and will be subdivided into 24 single-family residential lots ranging in size from 6,200 - 7,920 square feet.

Item 9.c
Staff recommends City Council consider and approve the Final Map for Lower Lagoon Valley Project Neighborhood L (Attachment 5 – Lower Lagoon Valley Neighborhood L Final Map).

Environmental Impact:

On June 8, 2004 the City Council certified the Environmental Impact Report (EIR) for the Lower Lagoon Valley development (SCH No. 2003032063). An addendum to the EIR was adopted by the Council on February 22, 2005 (SCH No. 2003032063).

Fiscal Impact:

The technical review of the final map was conducted by Development Engineering staff and consultant services. The cost of staff time and consultant fees are covered by fees paid by the developer.

Amount Requested: There are no funds requested for this item.

Alternatives:

City Council previously approved the Vesting Tentative Map for this project in February 2005.

Once the Vesting Tentative Map is approved and the Developer complies with the conditions of approval, the City is obligated by provisions of the Subdivision Map Act to approve the Final Map.

Strategic Plan Goal/Initiative:

Goal 3: Protect Vacaville’s Quality of Life
Initiative 3A: Promote Housing for All
Levine Act:

Yes
Attachments:

Resolution - Action Item
Attachment 1: Lower Lagoon Valley Development Project Vicinity Map Attachment 2: Lower Lagoon Valley Vesting Tentative Map Attachment 3: Lower Lagoon Valley Neighborhood K2 Final Map Attachment 4: Lower Lagoon Valley Neighborhood L Project Vicinity Map Attachment 5: Lower Lagoon Valley Neighborhood L Final Map Attachment 6: Levine Act Statement
Item 9.c

CITY OF VACAVILLE
RESOLUTION NO. 2026-

RESOLUTION OF THE CITY COUNCIL OF THE CITY OF VACAVILLE APPROVING THE

FINAL MAP FOR LOWER LAGOON VALLEY NEIGHBORHOOD L
WHEREAS, Triad Lagoon Valley, LLC, a Washington limited liability company (“Subdivider”) hereby submits to the City Council of the City of Vacaville a map of a proposed subdivision within the City limits called Lower Lagoon Valley Neighborhood L; and WHEREAS, the Vesting Tentative Map for Lower Lagoon Valley was approved by the City Council of the City of Vacaville on February 22, 2005, and has remained in full force and effect; and
WHEREAS, Subdivider executed a Subdivision Improvement Agreement with the City of Vacaville, covering said subdivision, in which the Subdivider covenants to construct all public improvements shown upon said subdivision map, in accordance with applicable laws, ordinances and specifications, and to hold harmless the City of Vacaville from material and labor claims for such construction; and
WHEREAS, said Subdivider has delivered to the City Engineer of the City of Vacaville a corporate surety bond as security for the performance of the terms of said Agreement; and WHEREAS, said Subdivider has met the requirements of the Development Agreement and Conditions of Approval for the project.

NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Vacaville does hereby (i) approve said Final Map; (ii) accept all offers of dedication for public use for the easements and facilities shown on the Final Map; and (iii) approve the improvement plans and working details for the project.

I HEREBY CERTIFY that the foregoing resolution was introduced and passed at a regular meeting of the City Council of the City of Vacaville, held on the 28th day of April, 2026, by the following vote:

AYES:

NOES:

ABSENT:

Commented [NA1]: Legal review completed
04/20/2026
Item 9.c
ATTEST:
_____________________________
Michelle A. Thornbrugh, City Clerk
Item 9.c
Item 9.c

LOWER LAGOON VALLEY DEVELOPMENT
ATTACHMENT 1

PROJECT VICINITY MAP

PROJECT

LOCATION

DEPARTMENT OF

PUBLIC WORKS
Item 9.c
Item 9.c
K23
K24
K25
K26
K27
K28 K31
K37
K36
K35
K34
K33
K32
K29 K30
K82
K83
K84
K85 K144
K145
K146
K147
K86
K87
K88
K143
K142
K141
K140
K93
K134 K135
K89
K91 K90 K139
K137 K138
K136
K123
K103
K124
K102
K125 K126
K101 K127
K100
K105
K122
K104
K96
K131 K99 K98
K129 K130
K97
K94
K133 K95
K132
K128
K109
K106 K107 K108
K112
K110 K111
K113
K118
K114 K115 K116 K117
K120 K119
K121

FOREST PARK TRAIL (PRIVATE)
5 PARCEL E

PARCEL D

PARCEL B

PARCEL F

NATIONAL GARDEN LANE (PRIVATE) MOUNT ROYAL ROAD (PUBLIC)

REUNION LANE (PUBLIC)

FALLS PARK WAY (PRIVATE)

BOSTON COMMON

WAY (PRIVATE)
7 6
8 9
10 11
12 REUNION LANE
(PRIVATE)

PARCEL C

PARCEL A

FALLS PARK WAY (PUBLIC)

NATIONAL GARDEN LANE (PUBLIC) CONSERVANCY TRAIL (PUBLIC)

BOSTON COMMON

WAY (PRIVATE)
K92

FOREST PARK

TRAIL (PRIVATE)

PARCEL G
4 120'

GRAPHIC SCALE
120' 0' 60' 120' 240' 480'
SCALE: 1" =
CONSISTING OF 12 SHEETS

BEING A SUBDIVISION OF PARCEL B OF
LOWER LAGOON VALLEY NEIGHBORHOOD K, PHASE 1 (98 SD 57)

SOLANO COUNTY RECORDS

CITY OF VACAVILLE, COUNTY OF SOLANO, CALIFORNIA
JULY 2024

CIVIL ENGINEERS SURVEYORS PLANNERS

SAN RAMON
WWW.CBANDG.COM

ROSEVILLE
(925) 866-0322
(916)788-4456

FINAL MAP OF

LOWER LAGOON VALLEY
NEIGHBORHOOD K2
BASIS OF BEARINGS:

LEGEND
NOTE:

REFERENCES:

JOB NO. 1424-010 SHEET OF 12
11 INDEX SHEET
draft 2024-07-31
ATTACHMENT 3
LOWER LAGOON VALLEY NEIGHBORHOOD K2 FINAL MAP
Item 9.c

LOWER LAGOON VALLEY NEIGHBORHOOD L PHA
ATTACHMENT 1 (1 OF 2)

PROJECT VICINITY MAP

DEPARTMENT OF

PUBLIC WORKS
80 80

PROJECT

LOCATION
4 (1 of 2)
Item 9.c

DEPARTMENT OF

PUBLIC WORKS

LOWER LAGOON VALLEY NEIGHBORHOOD L PHA
ATTACHMENT 1 (2 OF 2)

PROJECT VICINITY MAP
4 (2 of 2)
Item 9.c

REUNION LANE

NATIONAL GARDEN LANE
MOUNT ROYAL ROAD BOSTON COMMON WAY 4 5
L38 L37 L33 L27
L39 L40 L46
L36
L41
L35
L42
L34
L43
L29
L44 L49
L31
L48
L30
L47 L50
L32 L28
L45
3 PRELIMINARY
SCALE: 1" =
CONSISTING OF 5 SHEETS

BEING A SUBDIVISION OF PARCEL G OF
LOWER LAGOON VALLEY NEIGHBORHOOD K2 (99 SD 37)

SOLANO COUNTY RECORDS

CITY OF VACAVILLE, COUNTY OF SOLANO, CALIFORNIA
JANUARY 2026

CIVIL ENGINEERS SURVEYORS PLANNERS

SAN RAMON
WWW.CBANDG.COM

ROSEVILLE
(925) 866-0322
(916)788-4456

FINAL MAP OF

LOWER LAGOON VALLEY

NEIGHBORHOOD L
LEGEND
NOTE:

REFERENCES:

JOB NO. 1424-010 SHEET OF 5
BASIS OF BEARINGS:
50'

GRAPHIC SCALE
50' 0' 25' 50' 100' 200'

DETAIL A

BOUNDARY & INDEX SHEET
4 Item 9.c
Item 9.c
Item 9.c

CITY OF VACAVILLE
City Council
Staff Report Item 9.D
Meeting Date: April 28, 2026
To: Honorable Mayor and City Council Members
Attention: Savita Chaudhary, City Manager
From: Brian Oxley, Director of Public Works
(Jacob Smith, Construction Manager (707) 449-5429)
Subject: Resolution of the City Council of the City of Vacaville to Accept the Energy Conservation Services Project
Actions for Consideration:

The construction work for the Energy Conservation Services Project is complete and is now ready for consideration of acceptance by City Council.

Recommendations:

By simple motion, adopt the subject resolution.

Background:

The City’s Conservation and Open Space Element of the General Plan has a goal of promoting a sustainable energy supply and calls for the City to encourage the development of renewable energy sources within the City. Additionally, the City of Vacaville’s Energy Conservation Action Strategy (ECAS), adopted alongside the General Plan in August 2015, establishes a strategy for the City to achieve its greenhouse gas emissions reduction target, as required by State legislation. These project improvements offset 2,118 Metric Tons of Carbon Dioxide annually.

The ECAS presents several measures for the City to implement in order to increase energy independence and reduce electrical utility costs through the use of solar energy for City facilities. The installation of solar photovoltaic (solar PV) panels at City facilities would move the City toward meeting the goals of the General Plan and ECAS, as well as providing long-term cost savings to the City.

The State of California, recognizing the need to advance policies to aid governmental agencies in constructing energy conservation projects implemented California Government Code Sections 4217.12 through 4217.18.

California Government Code Section 4217.12 through 4217.18, authorizes public agencies, including the City of Vacaville, to enter into an energy service contract proposed by an energy services vendor when the anticipated cost of the alternative energy project will be less than the anticipated cost of energy that would have been expended if the project were not constructed.

Item 9.d
On August 22, 2023, the City Council authorized staff to enter into a contract with OPTERRA Energy Services, LLC, (Formerly ENGIE Services U.S (ENGIE)) to proceed with an energy conservation audit and analysis of City facilities.

On May 14, 2024, the City Council authorized the negotiation and execution of an energy services contract with OPTERRA Energy Services, LLC. The project consisted of adding solar PV systems to eight sites that were identified as the most optimal cost to benefit ratio (Attachment 1 - Project Vicinity Maps).

Table 1. Proposed Solar PV System Sites
Current total annual electrical utility cost: $1.5 million

PROPOSED SOLAR PV SYSTEM SITES SITE ADDRESS
Andrews Park/Georgie Duke Sports Center 720 East Monte Vista Avenue Vacaville City Hall 650 Merchant Street
City of Vacaville Corporation Yard & Bldg. A 1001 Allison Drive Ulatis Community Center 1000 Ulatis Drive
Fire Station 71 111 South Orchard Avenue
Fire Station 75 111 Cogburn Circle
Three Oaks Community Center 1100 Alamo Drive
McBride Senior Center 91 Town Square Place
Solar PV systems were installed atop ground-mounted, shade canopy structures at all sites except Fire Station 71. At Fire Station 71 and City Hall, roof mounted solar PV systems were installed (City Hall received both solar PV canopy as well as roof mounted solar power generating systems).

Each solar PV site includes a monitoring system which provides performance data including energy consumption, generation and whether the system incurs any damage or faults, all of which is available through a secure online dashboard.

In addition, OPTERRA evaluated the City’s existing facility emergency generators for replacement. Three of the oldest facility emergency generators were identified as at or beyond their lifecycle and in need of replacement (Table 2).

Item 9.d
Table 2. Emergency Generator Locations

EMERGENCY GENERATOR SITES SITE ADDRESS
Vacaville City Hall (replaced 2 existing generators) 650 Merchant Street Fire Station 71 (replaced 1 existing generator) 111 South Orchard Avenue Pursuant to the California Public Contract Code, once a Capital Improvement Project (CIP) has been constructed and the Director of Public Works has certified that the improvements are completed in accordance with the terms and conditions of the contract; the project is brought before City Council for acceptance.

Discussion:

The Energy Conservation Services Project was completed on March 27, 2026 (Attachment 2 – Project Completion Photos).

The Director of Public Works has certified that the improvements have been completed in accordance with the terms and conditions of the contract, and staff is now requesting that City Council accept the improvements.

The awarded construction contract amount was $17,301,076. Four executed change orders increased the total contract amount by $638,420.40, bringing the final contract amount to $17,939,496.40, approximately 3.7% more than the original contract amount. The project contingency fund is sufficient to cover the increase, and no additional appropriation is required.

During the project budgeting process and consistent with industry standards, a 10% project contingency is set up to account for project cost adjustments associated with in-field changes, unanticipated complications, City requested changes, and quantity adjustments. The contingency fund for this project will cover the cost increase, no additional funding is required or requested.

No City funds were expended for the construction of this project. Funding is provided by a 20- year tax-exempt lease purchase financing loan, and the electrical utility savings generated from this energy conservation project is expected to pay for this loan.

Environmental Impact:

City staff have determined that both the installation of the energy conservation measures, and the associated financing of the improvements are exempt from environmental review consistent with Section 15301 (Existing Facilities), which exempts, among other things, operation, repair, maintenance, minor alternations, or additions to existing public or private structures.

Item 9.d
Additionally, the project is categorically exempt pursuant to CEQA Guidelines Section 15303 (New Construction or Conversion of Small Structures), which exempts the construction or conversion of small equipment and small facilities, as well as CEQA Guidelines 15311 (Accessory Structures), which exempts the construction or placement of minor structures accessory to or appurtenant to existing facilities.

Fiscal Impact:

There are no impacts to the General Fund as a result of this action. The electrical utility savings generated from this energy conservation project is expected to pay for the 20-year Project taxexempt lease purchase financing loan.

Additionally, this project will provide both short and long-term savings to the General Fund that would otherwise be expended in electrical utility costs.

Amount Requested: There are no funds requested for this item.

Funding Source: Not applicable
Budget Distribution: Not applicable
Alternatives:

The City has an executed Energy Services Contract with OPTERRA Energy Services, LLC.

Pursuant to the Contract, the City agrees that the Certificate of Final Completion will not be unreasonably withheld, delayed or conditioned. Staff is required to prepare and record this Certificate upon City Council’s acceptance of the improvements. By not accepting these improvements, the City risks defaulting on the Contract resulting in potential arbitration.

Strategic Plan Goal/Initiative:

Goal 3: Protect Vacaville’s Quality of Life
Goal 4: Maintain Effective and Efficient Services
Initiative 4A: Ensure Fiscal Sustainability
Levine Act:

No
Attachments:

Resolution – Action Item
Attachment 1: Project Vicinity Maps
Attachment 2: Project Completion Photos
Item 9.d
RESOLUTION NO. 2026-

RESOLUTION OF THE CITY COUNCIL OF THE CITY OF VACAVILLE ACCEPTING PUBLIC

IMPROVEMENTS FOR THE ENERGY CONSERVATION SERVICES PROJECT WHEREAS, the City of Vacaville, after proceedings duly had, entered into a written contract on the 14th of May, 2024, with OPTERRA Energy Services, LLC, for the acquisition and installation of solar photovoltaic systems for the Energy Conservation Services Project in the City of Vacaville; and
WHEREAS, the original contract amount for the project was $17,301,076; and WHEREAS, taking into account the four executed change orders, the total increase to the contract was $638,420.40. The final cost of the work was $17,939,496.40, approximately 3.7% more than the original contract amount; and
WHEREAS, there are adequate funds available to compensate for the additional project costs; and
WHEREAS, the Director of Public Works has certified that said improvements were completed in accordance with the terms and conditions in said contract.

NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Vacaville does hereby accept said improvements as having been completed in accordance with the terms and conditions in said contract and authorizes final payment to the contractor.

I HEREBY CERTIFY that the foregoing resolution was introduced and passed at a regular meeting of the City Council of the City of Vacaville, held on the 28th day of April, 2026, by the following vote:

AYES:

NOES:

ABSENT:

ATTEST:
_____________________________
Michelle A. Thornbrugh, City Clerk
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 1

PROJECT VICINITY MAP
80 Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (1 OF 8)

PROJECT COMPLETION PHOTOGRAPH - CITY HALL
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (2 OF 8)

PROJECT COMPLETION PHOTOGRAPH - CORP YAR
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (3 OF 8)

PROJECT COMPLETION PHOTOGRAPH - DUKE CENT
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (4 OF 8)

PROJECT COMPLETION PHOTOGRAPH - MCBRIDE CE
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (5 OF 8)

PROJECT COMPLETION PHOTOGRAPH - THREE OAKS C
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (6 OF 8)

PROJECT COMPLETION PHOTOGRAPH - ULATIS CENT
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (7 OF 8)

PROJECT COMPLETION PHOTOGRAPH - FIRE STATION
Item 9.d

DEPARTMENT OF PUBLIC WORKS

ENERGY CONSERVATION SERVICES PROJEC
ATTACHMENT 2 (8 OF 8)

PROJECT COMPLETION PHOTOGRAPH - FIRE STATION
Item 9.d

CITY OF VACAVILLE
City Council
Staff Report Item 9.E
Meeting Date: April 28, 2026
To: Honorable Mayor and City Council Members
Attention: Savita Chaudhary, City Manager
From: Brian Oxley, Director of Public Works
(Jacob Smith, Construction Manager (707) 449-5429)
Subject: Resolution of the City Council of the City of Vacaville to Accept Public Improvements for the 2025 Slurry Seal Project Actions for Consideration:

The construction work for the 2025 Slurry Seal Project is complete and is now ready for consideration of acceptance by City Council.

Recommendations:

By simple motion, adopt the subject resolution.

Background:

The City of Vacaville’s roadway network totals over 700 lane miles. The Public Works Department strives to maintain a state of good repair for the City’s roadway network through the delivery of annual road rehabilitation and preventative maintenance projects. The cornerstone of maintaining our roadway network is our annual Slurry Seal Program; as painting a house seals the house from leaks, a street slurry seal in effect seals the street and prevents water intrusion which can lead to street foundation failure. The preventative maintenance activities performed during a slurry seal project include crack sealing, and the addition of an asphalt slurry seal coating and/or microsurfacing to maximize the lifecycle of the roadway. As is standard throughout the Bay Area, roadway sections included within the slurry seal project are identified through the use of the Metropolitan Transportation Commission (MTC) Street Saver application which is a pavement condition index system as well as observation and reporting of degraded street segments by the City maintenance crews.

On May 13, 2025, the City Council awarded the construction contract for the 2025 Slurry Seal Project to Pavement Coatings Co., of Sacramento, California. The project consisted of crack seal followed by slurry seal, micro-surfacing, and street traffic control striping and signage to more than 85 lane miles of roadway. The project also includes implementing reduced speed limits within certain school zones. On May 28, 2024, City Council adopted a resolution to reduce the posted speed limit in certain school zones consistent with the California Vehicle Code and the Manual of Uniform Traffic Control Devices. This project removed and replaced existing 25 mph signs with Item 9.e
15 mph signs around the City’s 19 school zones as previously presented to City Council at the May 28, 2024 council meeting (Attachment 1 - Project Vicinity Maps and Attachment 2 – Project Street List).

Pursuant to the California Public Contract Code, once a Capital Improvement Project (CIP) has been constructed and the Director of Public Works has certified that the improvements are completed in accordance with the terms and conditions of the contract; the project is brought before City Council for acceptance. If City Council accepts the improvements, staff will make final payment to the contractor and close out the project.

Discussion:

The 2025 Slurry Seal Project was completed on March 11, 2026 (Attachment 3 – Project Completion Photos).

The awarded construction contract amount was $3,759,398.50. Three executed change orders, along with decreases to certain bid item quantities, reduced the total contract amount by $255,239.53, bringing the final contract amount to $3,504,158.97, approximately 6.8% less than the original contract amount.

Environmental Impact:

The Community Development Department certified the Project exempt from the provisions of the California Environmental Quality Act in accordance with Section 15301- Class 1 (existing facilities) and a Notice of Exemption was filed with Solano County on November 20, 2024.

Fiscal Impact:

Amount Requested: There are no additional funds requested for this item.

Funding Sources: Measure M (1002) and Gas Tax (4010).

Budget Distribution: The budget for this project is included in the Capital Improvement Project account #820384, and sufficient funding exists in the project account.

Alternatives:

The City Council could choose not to accept the improvements. However, this would mean that the City would not make any final payments and release retention held on the project, and as such the City would be in breach of contract and could be subject to penalties of 2% per month of any unpaid amount per Section 7107 of the Public Contract Code.

Item 9.e
Strategic Plan Goal/Initiative:

Goal 4: Maintain Effective and Efficient Services
Levine Act:

No
Attachments:

Resolution – Action Item
Attachment 1: Project Vicinity Maps
Attachment 2: Project Street List
Attachment 3: Project Completion Photos
Item 9.e
RESOLUTION NO. 2026-
Resolution of the City Council of the City of Vacaville Accepting Public Improvements for the 2025 Slurry Seal Project
WHEREAS, the City of Vacaville, after proceedings duly had entered into a written contract on the 20th of June, 2025, with Pavement Coatings, Co., of Sacramento, California as Contractor for the construction of the 2025 Slurry Seal Project in the City of Vacaville; and WHEREAS, the original contract amount for the project was $3,759,398.50; and WHEREAS, taking into account the three executed change orders and the decrease of some quantities of the original contract work, the total decrease to the contract was $255,239.53. The final cost of the work was $3,504,158.97, approximately 6.8% less than the original contract amount; and
WHEREAS, there are adequate funds available to compensate for the additional project costs; and
WHEREAS, the Director of Public Works has certified that said improvements were completed in accordance with the terms and conditions in said contract.

NOW, THEREFORE, BE IT RESOLVED, that the City Council of the City of Vacaville does hereby accept said improvements as having been completed in accordance with the terms and conditions in said contract and authorizes final payment to the contractor.

I HEREBY CERTIFY that the foregoing resolution was introduced and passed at a regular meeting of the City Council of the City of Vacaville, held on the 28th day of April, 2026, by the following vote:

AYES:

NOES:

ABSENT:

ATTEST:
_____________________________
Michelle A. Thornbrugh, City Clerk
Item 9.e

DEPARTMENT OF

PUBLIC WORKS
2025 SLURRY SEAL PROJECT
ATTACHMENT 1

PROJECT VICINITY MAP
Item 9.e

DEPARTMENT OF

PUBLIC WORKS
2025 SLURRY SEAL PROJECT
ATTACHMENT 2

PROJECT STREET LIST
Item 9.e

DEPARTMENT OF PUBLIC WORKS
2025 SLURRY SEAL PROJECT
ATTACHMENT 3 (1 OF 2)

PROJECT VICINITY MAP
Item 9.e

DEPARTMENT OF PUBLIC WORKS
2025 SLURRY SEAL PROJECT
ATTACHMENT 3 (2 OF 2)

PROJECT VICINITY MAP
Item 9.e

CITY OF VACAVILLE
City Council
Staff Report Item 9.F
Meeting Date: April 28, 2026
To: Honorable Mayor and City Council Members
Attention: Savita Chaudhary, City Manager
From: Justen Cole, Director of Utilities Department
(Staff Contact: Matthew Freese, Engineering Manager of Utilities (707) 469-4124)
Subject: Resolution of the City Council of the City of Vacaville to Adopt Revised Construction Standards, Design Standards, and
Standard Drawings for Potable Water and Sanitary Sewer
Systems
Actions for Consideration:

The City Council will consider adopting updated Construction and Design Standards and Standard Drawings for the City’s Potable Water and Sanitary Sewer Systems.

Recommendations:

By simple motion, adopt the subject resolution.

Background:

The City maintains adopted standards governing the design and construction of public potable water and sanitary sewer facilities installed through private development projects and public capital improvement projects. These standards establish requirements for system sizing, materials, installation procedures, testing protocols, inspection requirements, and acceptance criteria. The City also maintains standard drawings that provide detailed construction requirements and typical installation details.

The current standards and drawings were originally adopted in September 1990 and include revisions through June 2015. Since that time, regulatory requirements, industry standards, material specifications, and operational practices have continued to evolve. While interim clarifications have been implemented through project-specific conditions and administrative interpretation, additional revisions are necessary to ensure consistency, transparency, and alignment with current best practices.

Accordingly, the Utilities Department conducted a focused review of the potable water and sanitary sewer construction standards, design standards, and standard drawings to incorporate regulatory updates, address operational considerations, and improve clarity for developers, engineers, and contractors working within the City, as well as to provide clear guidance and minimize interpretation of requirements between Utilities and other departments.

Item 9.f
Discussion:

The updated standards reflect current regulatory requirements and industry best practices while building on the City’s existing framework. The Utilities Department coordinated closely with the Public Works Department and engaged members of the development and engineering communities to ensure revisions support constructability, economic considerations, long-term maintenance, and operational reliability.

Key updates include:
• Conformance with current American Water Works Association (AWWA) standards and industry best practices
• Modernization of design and construction standards to meet current system demands, operational practices, and long-term reliability
• Updates to standard drawings to improve clarity, constructability, and consistency across projects
• Enhanced procedures for inspection, testing, and acceptance to maintain regulatory compliance and infrastructure performance
Redline versions of each standard and drawing are provided to clearly identify revisions from the previously adopted standards. Clean versions are included for formal adoption.

Adoption of these revised standards and drawings will improve project review efficiency, reduce ambiguity, enhance regulatory compliance, and support long-term infrastructure reliability.

Environmental Impact:

Adoption of updated construction standards, design standards, and standard drawings is an administrative action establishing technical requirements for future projects. Approval of the resolution does not approve a specific development project or authorize physical construction activities. Therefore, this action is not a “project” as defined by the California Environmental Quality Act (CEQA) Guidelines Section 15378(b)(5) and is not subject to CEQA. Specific projects subject to these revised standards will be analyzed for CEQA compliance separately as they arise.

Fiscal Impact:

Adoption of the updated standards and drawings does not have a direct fiscal impact on the City’s General Fund.

Costs associated with compliance will be incorporated into future development and capital improvement project budgets. Modernized standards are expected to reduce long-term maintenance costs, minimize operational inefficiencies, and reduce staff time spent on projectspecific clarifications.

Amount Requested: None.

Funding Source: Water (5101) and Sewer (5001) Operating Funds Item 9.f
Budget Distribution: The costs associated with staff time with this item are fully supported within the Utilities Department’s operating budgets for both Water and Sewer.

Alternatives:

Maintain Existing Standards and Drawings – The City could continue operating under its existing standards and implement updates on a project-by-project basis. Under this approach, outdated requirements may not fully align with current regulatory and industry standards, which could result in inconsistencies across projects, increased staff time for clarifications, and potential compliance issues. In addition, failure to maintain updated standards may expose the City to liability risks related to infrastructure performance, public health, and safety, as well as increased maintenance and operational costs over time.

Strategic Plan Goal/Initiative:

Goal #4 – Maintain Effective and Efficient Services
Initiative 4A: Ensure Fiscal Sustainability
Goal #3 – Protect Vacaville’s Quality of Life
Initiative 3B: Maintain and Enhance Infrastructure
Levine Act:

No
Attachments:

Resolution – Action Item
Attachment 1: Construction Standards for Potable Water Systems (Redline) Attachment 2: Construction Standards for Sanitary Sewer Systems (Clean) Attachment 3: Design Standards for Potable Water Systems (Redline) Attachment 4: Design Standards for Potable Water Systems (Clean) Attachment 5: Construction Standards for Sanitary Sewer Systems (Redline) Attachment 6: Construction Standards for Sanitary Sewer Systems (Clean) Attachment 7: Design Standards for Sanitary Sewer Systems (Redline) Attachment 8: Design Standards for Sanitary Sewer Systems (Clean) Attachment 9: Standard Drawing – Water (Redline)
Attachment 10: Standard Drawing – Water (Clean)
Attachment 11: Standard Drawing – Sewer (Redline)
Attachment 12: Standard Drawing – Sewer (Clean)
Item 9.f

CITY OF VACAVILLE
Resolution No. 2026-
Resolution Of The City Council Of The City Of Vacaville Adopting Revised Construction Standards, Design Standards, And Standard Drawings For Potable Water And Sanitary Sewer Systems
WHEREAS, the City of Vacaville (“City”) owns and operates public potable water and sanitary sewer systems that provide essential services to the community; and WHEREAS, the City has adopted construction standards, design standards, and standard drawings governing the design, installation, inspection, and acceptance of potable water and sanitary sewer facilities constructed through private development projects and public capital improvement projects; and
WHEREAS, the current standards and drawings were originally adopted in September 1990 and include revisions through June 2015; and
WHEREAS, the Utilities Department, in coordination with the Public Works Department and with input from the development and engineering community, has conducted a targeted review and revision of the City’s potable water and sanitary sewer construction standards, design standards, and standard drawings to incorporate updated regulatory requirements, align with current industry standards, improve clarity for developers, engineers, and contractors, and support long-term system reliability; and
WHEREAS, the City Council finds that adoption of these revised Construction Standards, Design Standards, and Standard Drawings is in the best interest of the City of Vacaville and its residents.

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

Section 1: The following updated documents, dated April 28, 2026, attached hereto and incorporated herein by this reference as Attachments listed below, are hereby adopted:
• Attachment 2: Construction Standards for Potable Water Systems • Attachment 4: Design Standards for Potable Water Systems • Attachment 6: Construction Standards for Sanitary Sewer Systems • Attachment 8: Design Standards for Sanitary Sewer Systems • Attachment 10: Standard Drawings – Water
• Attachment 12: Standard Drawings – Sewer
Commented [SB1]: @Savita Chaudhary @Angelina
Herron Here is the updated resolution☺️
Commented [SC2]: The attachments are listed as 1
thru 12 in the staff report (All even numbers 2,4,6,8,10 and 12 are Clean versions)
The resolution refers them as A thru F
Commented [SB3R2]: @Savita Chaudhary Updated to
reflect Attachments 2, 4, 6, 8, 10 and 12
Item 9.f
Section 2: The Director of Utilities, or their designee, is authorized to approve future minor administrative updates, formatting changes, and clarification edits.

Section 3: This Resolution shall take effect immediately upon adoption and shall to all applicable development applications and capital improvement projects submitted after the effective date, as determined by the Director of Utilities.

I HEREBY CERTIFY that the foregoing resolution was introduced and passed at a regular meeting of the City Council of the City of Vacaville, held on the 28th day of April 2026, by the following vote:

AYES:

NOES:

ABSENT:

ATTEST:
_____________________________
Michelle A. Thornbrugh, City Clerk
Item 9.f
Potable Water System Construction Standards Page CS 8-1 CS-SEC 08-UD Review (Aug 2024)

CONSTRUCTION STANDARDS
SECTION CS 8

POTABLE WATER SYSTEMS
CS 8-01 GENERAL: Potable water systems improvements shall be constructed in conformance with the City Standard Specifications and Standard Drawings.

Nothing in the City Standard Specifications shall relieve the Contractor from conforming to the manufacturer’s recommendations. If a conflict between the City Standard Specifications and the manufacturer’s recommendations arises, the more stringent requirement shall apply.

All testing requirements of the most current ASTM and AWWA standards and other provisions of these City Standard Specifications for the materials and equipment furnished shall be conducted by the manufacturer or its representative unless otherwise stated. A certificate of compliance conforming to these specifications must be furnished and submitted to the Director of Public WorksDirector of Utilities and/or the City Engineer by the manufacturer through the Contractor. The certification must be approved by the Director of Public WorksDirector of Utilities and/or the City Engineer prior to installation of the materials or equipment. Such certification shall reference and specifically identify the materials and equipment delivered to the job site. All other testing requirements required by these City Standard Specifications shall be performed by the Contractor at its own expense unless otherwise noted.

All testing requirements are to be completed prior to any issuance of building permits and occupancy, including for model homes.

CS 8-02 WATER MAINS: Pipe materials shall be as specified on the Project Plans and/or Special Provisions and shall conform to the following:

A. DUCTILE IRON PIPE (DIP)

1. Ductile iron pipe for sizes 4-inch through 12-inch shall conform to AWWA C151 for a minimum pressure Class 350 unless otherwise specified. Sizes 18 inches and larger shall conform to AWWA C151 and the pressure class shall be as noted on the Project Plans and or as specified in the Special Provisions.

2. The class or normal thickness, net weight without lining, and casting period shall be clearly marked on each length of pipe. Additionally, the manufacturer’s mark, country where cast, year in which the pipe was produced, and the letters “DI” or “Ductile” shall be cast or stamped on the pipe.

3. The interior surface of all ductile iron pipes shall be standard thickness, cement-mortar- lined and seal coated in conformance with AWWA C104.

4. The exterior surface of the pipe shall have a standard asphaltic coating.

Attachment 1 Item 9.f
Potable Water System Construction Standards Page CS 8-2 CS-SEC 08-UD Review (Aug 2024)

5. Joints shall be of bell and spigot type conforming to AWWA C111 unless otherwise specified. The lubricant and its application shall be as recommended by the pipe manufacturer and shall not adversely affect the potable qualities of the water to be transported. Spray on lubricants shall not be permitted.

6. Provide cathodic protection for all metallic pipe and service materials.

Methods and materials shall be determined by an engineer and be approved by the Director of Utilities.

B. POLYVINYL CHLORIDE PIPE (PVC)

1. Polyvinyl chloride pipes shall be manufactured in accordance with AWWA C900 for polyvinyl chloride (PVC) pressure pipe for water. The pipe shall have cast-iron pipe equivalent outside diameter and shall have a dimension ratio of 184 (Class 30510) unless a higher class of pipe is specified on the Project Plans or in the Special Provisions.
a. The pipe shall be blue or white in color.
b. The pipe and gaskets shall be kept clean and protected against sunlight and heat damage. Sun or heat damaged pipe may be rejected at the Inspector’s discretion.
c. Pipe manufactured more than 18 months prior to its installation will not be permitted.
d. Rejected pipe shall be immediately removed from the job site. e. The beveled end of the pipe shall be cut off squarely before insertion into a mechanical joint. The cut end shall be de-burred such that it does not cut the elastomeric gasket when it is slipped over the cut end of the pipe.

2. PIPE JOINTS – The pipe joint for PVC pipe shall be either a PVC coupling sleeve of a corresponding size and pressure class adequate to withstand not less than the pressure class rating of the pipe, employing two elastomeric gasket seals, conforming to ASTM F477, or an integral wall thickened bell end, with an elastomeric gasket seal ring groove and employing an elastomeric gasket seal which conforms to ASTM F477.

Lubricant shall be as recommended by the pipe manufacturer and shall not adversely affect the potable qualities of the water to be transported.

3. MARKINGS – The pipe shall be clearly marked in accordance with AWWA C900. Additionally, the pipe shall be manufacturer date- coded and the City shall be provided the manufacturer’s coding for translation. The pipe shall be installed with the manufacturing label showing on the top.

C. FITTINGS

1. All fittings, including but not limited to bends, tees, crosses, and reducers for use with either ductile iron or polyvinyl chloride pipe shall be ductile iron Item 9.f
Potable Water System Construction Standards Page CS 8-3 CS-SEC 08-UD Review (Aug 2024) and shall be restrained in accordance with the requirements of Section CS 8-09, “Thrust Restraint” of these specifications. Ductile iron fittings for mechanical joints shall conform to “compact ductile iron fittings” as specified in AWWA C153 and flange fittings shall conform to AWWA C110.

2. All cross and tee fittings shall have flange ends. All other fittings shall have either flange or mechanical joint ends.

3. All fittings except for tapping sleeves shall be either factory fusion-bonded epoxy lined and coated in accordance with AWWA C116 or cement mortar lined and seal coated in accordance with AWWA C104.

4. All flange bolts, nuts, and washers, installed below grade shall be Type 304 stainless steel.

5. Teflon anti-seize compound shall be used on bolt and tie rod threads.

CS 8-03 GATE VALVES: All valves 4-inch through 12-inch nominal pipe size shall be gate valves and shall be cast iron body, non-rising stem, resilient wedge type as manufactured and tested in accordance with AWWA C509, and shall meet the following requirements.

A. Valves shall open left (counter- clockwise) and be provided with 2-inch square wrench nuts.

B. Valves shall have a full opening of equal diameter of the connecting pipe.

C. All internal ferrous metal surfaces shall be fully coated with factory applied epoxy as per AWWA C550. The coating thickness shall be a nominal thickness of 10 mils.

D. The wedge shall be fully encapsulated with styrene butadiene rubber. There shall be no voids or exposed iron on the cast iron wedge.

E. The rubber on the wedge guide lugs shall be protected with an acetyl copolymer bearing cap.

F. The valves shall be rated for 250 psig.

G. The stem shall be machined from a forged manganese bronze bar stock and shall have a forged thrust collar. Cast stems are not acceptable.

H. Valves shall have class 125 flange ends in accordance with ANSI B-16.1.

I. A valve box shall be installed over each valve with an 8 inch8-inch diameter riser.

J. Gate valves shall conform to the Standard Drawings.

Item 9.f
Potable Water System Construction Standards Page CS 8-4 CS-SEC 08-UD Review (Aug 2024) CS 8-04 BUTTERFLY VALVES: Valves 18 inches and larger shall be butterfly valves and shall be manufactured in accordanceaccordance with AWWA C504 for Class 150B service and shall comply with the following requirements:

A. Valve bodies shall be constructed of cast iron ASTM A-126 Class B and conform to AWWA C504 in terms of laying lengths and minimum body shell thickness.

B.A. Valves shall have class 125 flange ends in accordance with ANSI B16.1.

C.B. Valve disks shall be made from cast iron ASTM A-126 Class B (18”) or ASTM A-48 Class 40 (24”). Sizes 30-inch and larger shall be ductile iron ASTM A-536 Grade 65-45-12. The disc shall be furnished with a type 316 stainless steel seating edge to mate with the rubber seat on the valve body.

D.C. Valve seats shall be Buna-N rubber located on the valve body. Valve sizes 20 inches and smaller shall have a bonded seat that meets test procedures outlined in ASTM D429 Method B. Sizes 24” and larger shall be retained in the valve body by mechanical means without the use of metal retainers or other devices located in the flow stream.

E.D. Valve shafts shall be type 304 stainless steel, conforming to ASTM A-276. Shaft seals shall be standard self–adjusting chevron “V” type packing. Shaft seals shall be of a design allowing replacement without removing the valve shaft.

F.E. Valve bearings shall be sleeve type, which are corrosion resistant and self-lubricating. The bearing load shall not exceed 1/5 of the compressive strength of the material.

G.F. Valve actuators shall be fully grease packed and have stops in the open/close position. The actuator shall have a mechanical stop which will withstand an input torque of 450 ft. lbs. against the stop. The traveling nut shall engage alignment grooves in the housing.

H.G. The valve interior and exterior surfaces except for seating shall be coated with a nominal thickness of 7-mil factory applied epoxy in accordance with AWWA C550. Rubber lined interiors are not acceptable.

I.H. All valves shall be factory hydrostatic and leak tested. The leak test shall be performed at a differential pressure of 150 psig with the disk in a closed position. In a slightly open position, internal hydrostatic pressure equal to 300 psig shall be applied to the inside of the body for 5 minutes.

J.I. A valve box with an 8-inch diameter riser shall be installed over each valve.

K.J. Butterfly valves shall conform to the Standard Drawings.

CS 8-05 VALVE BOXES: Valve boxes shall be of precast concrete, and shall have a cast iron face and a cast iron traffic lid marked “WATER.” Item 9.f
Potable Water System Construction Standards Page CS 8-5 CS-SEC 08-UD Review (Aug 2024) A. Valve box risers shall be set perpendicular to the axis of the water valve body and centered over the valve operating nut.

B. Where valves are placed in unimproved easement areas the valve boxes shall be set 3 inches above grade and shall be marked by the installation of a reflectorized “Water Line Warning” marker.

C. The Water Line Warning marker installation shall conform to the Standard Drawings.

CS 8-06 FIRE HYDRANT ASSEMBLIES: Fire hydrants shall be wet barrel and shall meet the requirements of AWWA Standard C503. Hydrants shall be furnished with a break-off spool. Hydrants shall be Clow or Jones.

A. The bury shall have an inlet diameter of 6 inches.

B. Delivery classification shall be two-hose (2½ inch) and one-pumper nozzle (4½ inch), having “National Standard Fire Hose Coupling Screw Threads” in conformity with NFPA 194 and ANSI B26. The operating nuts and nozzle caps shall be National Standard pentagon dimensions, and shall open left (counter clockwise).

C. Every fire hydrant installation shall have a gate valve installed on the lateral at the main. Only ductile iron pipe with restrained joints shall be used as a service connection between the main and the hydrant.

D. A blue Type B reflective pavement marker conforming to the requirements of Section 85 of the CALTRANS Standard Specifications for identifying the location of each fire hydrant shall be installed within the improved street in accordance with the Standard Drawings.

E. The hydrant shall be painted white in the field with rust resistant gloss enamel paint. Glass beads shall be applied liberally to the wet paint surface.

E.F. For hydrants installed in locations with a high risk of impact, such as corners of major intersections, near commercial driveways or private property, a break-off check valve installed between the riser spool and hydrant may be required by the City per City Standard Drawing 5-15 and, if deemed necessary, shall be identified on Project Plans.

CS 8-07 AIR RELEASE AND BLOW-OFF ASSEMBLY: Attention is directed to the Standard Drawings for the approved design and construction of these assemblies. Brass pipe and fittings shall be used from the main to the blowoff for assemblies up to 2-inch per Standard Details 5-12 and 5-131.

CS 8-08 WATER SERVICE LINES: The size and location of water service lines shall be shown on the Project Plans. Materials and installation shall be as follows:

A. PEX-a (crosslinked polyethylene)Polyethylene tubing shall be used for service sizes of 1, 1 1/2, & 2 inches. Municipex or equal.

1. Crosslinked Polyethylene direct bury pressure pipe shall meet the standards of AWWA C9041 and , ASTM F876. ,PE3408.

Item 9.f
Potable Water System Construction Standards Page CS 8-6 CS-SEC 08-UD Review (Aug 2024)

2. Manufacturing Standard: Must comply with AWWA C904 (Crosslinked Polyethylene Pressure Pipe for Water Service).

3. Dimensions: Produced to Copper Tube Size (CTS) with a Standard Dimension Ratio of SDR9.

4. Material Designation: Must have a PEX material designation code of 3306 per ASTM F876, indicating the highest level of chlorine and UV resistance.

5. Pressure/Temperature Ratings:

A. 160 psi @ 73.4°F (standard rating).

B. 200 psi @ 73.4°F (when using a 0.63 design factor).

C. 100 psi @ 180°F.

6. UV Protection: Must feature a co-extruded UV-resistant outer shield (typically blue) providing a minimum of 1 year of protection from sunlight.

7. Certifications: Third-party certified to NSF/ANSI 14 & 61 (potable water) and CSA B137.5.

B. Fittings shall be Mueller Insta-Tite 2.0 or equal.

1. Fitting Standard: Copper service threads (CTS) manufactured and tested in accordance with AWWA C800 (Underground Service Line Valves and Fittings).

2. Material Construction:
a. Body: Cast bronze (ASTM B594 C89833 or C87850).
b. Grip Ring: Red-colored molded acetal plastic (specifically for CTS sizes) reinforced with a 301 Stainless Steel "one-way" ring. c. Gasket: EPDM rubber (ASTM D2000) for a positive leak-tight seal.
d. Pressure Rating: Designed to have a pressure-holding capability greater than the pipe or valve to which it is connected in potable water applications.
e. Operating Temperature: Suitable for a range of +32°F to +100°F.

3. Installation Requirements
a. Insertion Depth: Pipe must be cut square and stabbed to the specific depth (e.g., 1-7/8" for 1" CTS) to ensure the grip ring engages.
b. Backfilling: Connections buried in sandy or gritty soil should be taped to prevent debris from entering the mouth of the
connection.

1. The pipe shall have a minimum pressure rating of 200 psi.

Item 9.f
Potable Water System Construction Standards Page CS 8-7 CS-SEC 08-UD Review (Aug 2024)

2. One inch pipe shall be manufactured to iron pipe size (IPS) and have an SDR of 7.

3. Pipes 1½-inch and 2-inch in diameter shall be manufactured to copper tube size.

4. Installation shall be in accordance with the manufacturer’s recommendation.

5. Splicing of pipe between the main and angle stop shall not be permitted.

5.6. When required, sService lines shall be sleeved in poly-ethylene tubing (PE) tubing or cased in Schedule 40 PVC with end seals. 1-inch and 1-1/2-inch service lines shall be cased in 2-inch pipe; 2-inch service lines shall be cased in 3-inch pipe to protect service lines..

A. Ductile Iron Pipe (DIP) shall be used for services of 3 inches in size and larger, including lines for all appurtenances. The DIP service pipe shall conform to the provisions of Section CS 8-02, “Water Mains.” The 4-inch by 3-inch reducer and 3-inch spool shown on the 3-inch water service Standard Drawing shall be Class 53.Copper tubing may be used for service lines of 1, 1 ½ & 2 inches, and may be required by designers or the City. Where required, it shall be indicated and specified on the Project Plans.

1. Copper tubing shall be standard size and seamless. All copper tubing and fittings shall meet all requirements of AWWA C800.

2. Type “K” copper shall be used and shall be polyethylene coated.

A.B. Ductile Iron Pipe (DIP) shall be used for services of 3 inches in size and larger, including lines for all appurtenances. The DIP service pipe shall conform to the provisions of Section CS 8-02, “Water Mains.” The 4-inch by 3-inch reducer and 3-inch spool shown on the 3-inch water service Standard Drawing shall be Class 53.

B.C. Service line valves and fittings shall conform to AWWA C800 and the Standard Drawings.

1. Services up to and including 2-inch in diameter shall be equipped with a corporation stop at the main with an angle stop at the back of sidewalk.

2. A flanged gate valve shall be furnished at the mainline tee for services 3-inch in diameter and larger.

3. The size of the corporation stop and angle stop or gate valve shall be the same as the service line except in the case of a 3 inch service.

4. A meter box at the back of walk or as shown on the plans is required for all services.

5. Only neoprene or rubber gaskets shall be used between the saddle and the pipe.

Item 9.f
Potable Water System Construction Standards Page CS 8-8 CS-SEC 08-UD Review (Aug 2024)

6. All valves 2-inches in diameter and smaller shall be of a ball type rated at 300 psi.

A. The location of each service shall be permanently indicated by inscribing the letter “W” in the curb directly above the line when the service is perpendicular to the street centerline or at the right angle to the end of the service for a skewed or angling service.

B. The water main shall be tapped at the service locations shown on the Project Plans and construction completed by the Contractor in accordance with the Standard Drawings. A minimum distance of 18-inches between taps must be maintained.

CS 8-09 WATER SYSTEMS INSTALLATION:

A. GENERAL: All pipes, valves, fittings, and appurtenances shall be installed in accordance with the requirements of Section CS 8-09, the manufacturer’s recommendations, and AWWA C600 for ductile iron pipe and AWWA C605 for PVC pipe. The interiors of all pipes, fittings, and valves shall be protected from contamination by following the precautions described in AWWA C651.

Pipe shall not be installed in a trench that contains standing water. The Contractor shall keep the pipe interior free from foreign materials and in a clean and sanitary condition until acceptance by the City. Pipe shall not be laid when the condition of the trench or the weather is unsuitable or when there is the possibility of water or other foreign material entering the pipe.

B. POLYETHYLENE ENCASEMENT: The exterior of all buried ductile iron pipe, fittings, and other appurtenances shall be double encased with polyethylene in accordance with C-105/A21.5: Method A, B or C. Double thickness of PE encasement shall be provided at locations specified or shown on Project Plans or as otherwise required by the Utilities Department.AWWA C105.

C. DEFLECTION: The Contractor shall submit a table of maximum deflections allowed for the combination of pipe and fittings necessary to complete the installation of the water facilities based upon the manufacturer’s specifications proposed to be furnished and the following criteria outline below:

1. DIP – The pipe shall be laid true and uniform to line and grade, with no visible change in alignment at any joint unless curved alignment is called for on the plans; in which case the allowable joint deflection is dependent upon the pipe diameter size and joint type. The allowable deflection per joint shall not exceed 70% of the manufacturer’s maximum deflection for the joint type and pipe and/or fitting size. If there is a difference in the manufacturer’s recommendation between the pipe and fitting, the smallest deflection shall govern. Deflections in excess of 70% of the manufacturer’s recommendations must be made with a fitting per AWWA C110 or C153.

Item 9.f
Potable Water System Construction Standards Page CS 8-9 CS-SEC 08-UD Review (Aug 2024)

2. PVC – The pipe shall be laid true and uniform to line and grade, with no visible change in alignment at any joint unless curved alignment is called for on the plans, in which case the installation shall be subject to the following criteria:
a. No deflections shall be allowed at a pipe bell to spigot joint. b. Curved alignments shall be constructed by manually bending the pipe or by providing a bell- by- bell PVC coupling or ductile iron fitting.
c. The PVC coupling shall provide a maximum of 5 degrees of total angular deflection, (2 ½ degrees at each end).
d. The coupling shall be a Class 200 psi fabricated fitting conforming to AWWA C900.
e. Deflections equal to and greater than 11¼ degrees shall be made with a ductile iron fitting and shall conform to AWWA C110 or C153.

Minimum pipeline radii for uniformly bending the pipe without couplings or fittings are:

R = 350 feet for 8-inch diameter pipe
R = 550 feet for 12-inch diameter pipe
D. THRUST RESTRAINT

1. Thrust Blocks – Thrust blocks of minimum strength 3000 psi concrete shall be cast-in-place at all horizontal or vertical bends of 11¼ degree angle or more, behind each plug, cap, tee, or cross which is valved or plugged in such a manner that it can act as a tee or elbow, and at the back of each fire hydrant bury. The thrust block shall extend from the fitting to undisturbed soil, and shall be kept clear of the joint, nuts, and bolts. The size of the thrust block shall be in accordance with the Standard Drawings.

2. Restrained Joints – Flange, restrained push-on, or restrained mechanical joints may be used in lieu of concrete thrust blocks when approved by the Director of Public WorksDirector of Utilities and/or the City Engineer and shall be the type accepted by the pipe manufacturer.

PVC pipe restraint shall conform to ASTM F-1674. The type of restraining device and specific product shall be subject to the approval of the Director of Public WorksDirector of Utilities and/or the City Engineer through the submittal process. Thrust restraint calculations with recommended restrained length on each side of the fitting and appurtenance shall be prepared and submitted for approval to the Director of Public WorksDirector of Utilities and/or the City Engineer.

Item 9.f
Potable Water System Construction Standards Page CS 8-10 CS-SEC 08-UD Review (Aug 2024) E. CONSTRUCTION INTERRUPTION - Whenever pipe laying is discontinued for an hour or more, the open ends of all mains and fittings shall be closed with watertight plugs or bulkheads. The plug or bulkhead shall not be removed unless, or until, the trench is dry and the Contractor is ready to proceed with the work.

F. SYSTEM TIE-INS - When a water service is to be connected to an existing line, the Contractor shall make the tap or tie-in into the existing main, under the direct supervision of a Certified Distribution System Operator of the Department of Public WorksUtilities Department. The Contractor shall contact the Utilities DepartmentDepartment of Public Works and schedule a Pre SystemPre-System Tie-in meeting with the Certified Distribution System Operator to occur at least 72 hours in advance of the time of the proposed tap or tie-in. The Contractor shall notify all affected customers in case of a shutdown/interruption of service. Customers shall receive notification no fewer than 48 hours prior to the shutdown.

NOTE: Under no circumstances shall anyone other than a Certified Distribution System Operator of the Department of Public WorksUtilities Department, open or close any valve connected to a City-operated water system.

G. LOCATING WIRE AND TAPE – All water mains, services, and appurtenances shall have a direct burial locating wire and detectable locating tape laid above the top of pipe before backfilling. The wire shall be installed and spliced in accordance with the Standard Drawings to form a set of continuous electrical conductors throughout the pipe system.

Detectable locating tape shall be metallic-core, blue in color with “CAUTION: WATER LINE BURIED BELOW” printed continuously along its length, and shall be installed approximately 12-24 inches below the finish grade. A continuity test shall be conducted on the entire system by the Contractor in the presence of the Inspector.

H. Trench excavation, bedding and backfill shall conform to Section CS 2 and Section CS 3 of the City Standard Specifications.

CS 8-10 REGULATIONS RELATING TO SANITARY HAZARDS: All construction shall conform to applicable regulations relative to safeguarding the public health, particularly the regulations relating to cross connections as established by the California Administrative Code, Title 17, Chapter V, Sections 7583-7622 and the Cross Connection Control Program of the City of Vacaville.

CS 8-11 WATER FOR TESTING, FLUSHING, AND DISINFECTION: Water for hydrostatic testing, flushing, and disinfection shall be supplied by a new valve installed by the Contractor and operated by a Certified Distribution System Operator of the Department of Public WorksUtilities Department. Alternative Item 9.f
Potable Water System Construction Standards Page CS 8-11 CS-SEC 08-UD Review (Aug 2024) methods shall not be permitted except at the sole discretion of the Director of Public WorksDirector of Utilities and/or the City Engineer.

CS 8-12 HYDROSTATIC PRESSURE TESTING. The pipe shall be subject to a hydrostatic pressure test prior to the placement of any asphalt.

A. The test shall be performed after the entire water system as shown on the Improvement Plans is backfilled, the concrete curb, gutter, and sidewalk is installed, the street aggregate base rock material is in place to final grade, and the fire hydrants and water services are set to grade.

B. Testing of a partial system will not be permitted unless otherwise directed by the Director of Public WorksDirector of Utilities and/or the City Engineer.

C. The pipe to be tested shall have only one physical connection to the existing water system. The new valve at the single point of connection shall be solely operated by a Certified Distribution System Operator of the Department of Public WorksUtilities Department. All other work related to the Hydrostatic Pressure Testing shall be performed by the Contractor.

D. The pipe shall be slowly filled with water by a Certified Distribution System Operator of the Department of Public WorksUtilities Department and all air shall be expelled from the pipe by the Contractor. The release of the air may be accomplished by the Contractor by opening hydrants and service line cocks at the high points of the system and the blow-offs at all dead ends.

The valve controlling the admission of water into the section of pipe to be tested should be opened wide before shutting the hydrants or blow-offs.

After the system has been filled with water and all air expelled, all the valves controlling the section (including the connection to the existing system) to be tested shall be closed and the line be allowed to set for a period of not less than 24 hours.

E. The pipe shall then be refilled, if necessary, and subjected to a pressure of not less than 150 psi or the service pressure plus 50 psi, whichever is greater, for a period of four hours. All tests shall be witnessed by an authorized representative as designated by the of the Department of Public WorksUtilities Department.

F. All exposed pipe, fitting, valves, hydrants, and all joints shall be carefully examined during the pressure test. Any cracked or defective pipe, fittings, valves, or hydrants discovered during the test shall be removed and replaced with sound material and the test repeated until the system is proved satisfactory.

G. The allowable leakage in the test section shall be in accordance to AWWA C600 and shall not exceed 0.0919 gallons per hour per inch diameter per 1,000 feet of main being tested.

H. All leaks shall be immediately corrected and the system again subjected to a hydrostatic pressure test. Even if the leakage is less than the allowable, all observed leaks shall be repaired.

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Potable Water System Construction Standards Page CS 8-12 CS-SEC 08-UD Review (Aug 2024) I. Upon the successful completion of the hydrostatic pressure test and the water bacteria test, and prior to final paving, the remaining connections, if any, shall be made in accordance with AWWA C651.

J. The backfill material for the tie-in shall be Class II aggregate base compacted to 95% relative compaction.

CS 8-13 FLUSHING AND DISINFECTION – All work shall conform to the latest revision of AWWA C60051.:

A. CONNECTION AND TESTING PLAN – The Contractor shall conform to the requirements for the connection to the existing system, flushing, disinfection, sampling, testing and disposal of flushing water as shown on the Project Plans and as specified within the Standard Specifications.

B. INITIAL FLUSHING – Flushing shall be performed under the direct observation of a Certified Distribution System Operator of the Utilities Department of Public Works. A minimum continuous velocity of 2.53 feet/second shall be achieved for the duration of flushing. Flushing shall be continuous until all the water in the line has been replaced a minimum of two times, and for such additional time as necessary for the blow-off water to flow clean and free of debris. Blow-offs, curb stops, hydrants, or other outlets, temporary or permanent, shall be installed on water mains to allow the minimum continuous flushing flow in the main.

C. DISINFECTION - All disinfection and flushing activities shall be performed under the direction of a Certified Distribution System Operator of the Department of Public WorksUtilities.

1. The water pipes shall be thoroughly flushed and cleaned as described above and shall then be treated with a chlorine solution by the continuous feed method described in AWWA C651. Hypochlorite tablets or granules are not permitted.

2. Chlorine shall be applied in a stream of water entering the main in a concentration of not less than 25 mg/L free chlorine.

3. The chlorinated water shall remain in the main for a minimum of 24 hours after which the chlorine concentration shall be not less than 10 mg/L free chlorine as determined by the Certified Distribution System Operator of the Department of Public WorksUtilities Department.

D. FLUSHING AFTER DISINFECTION - The water pipes shall be thoroughly flushed at the end of the specified contact time. Flushing shall continue until the chlorine residual of the water has been reduced to an amount equivalent to the residual normally present in the existing distribution system (0.5 – 1.0 mg/L). All chlorinated water that is flushed to disposal must be dechlorinated.

E. BACTERIOLOGICAL SAMPLING - After flushing, samples of the water shall be taken for bacteriological analysis and delivered to the laboratory.

Two complete sets of samples shall be taken by the City at least 24 hours Item 9.f
Potable Water System Construction Standards Page CS 8-13 CS-SEC 08-UD Review (Aug 2024) apart. No hose or fire hydrant shall be used in the collection of samples.

Sampling procedures in AWWA C651 shall be followed before approving a main for release, using Option ‘A’ or Option ‘B”, as follows:.

1. Option A- Take an initial sample and then resample again after a minimum of 16 hours using the sampling site procedures outlined. Both sets of samples must pass for the main to be approved for release.

2. Option B- Let water sit in pipe for a minimum of 16 hours without any water use. Then collect two samples, using sampling site procedures outlined and without flushing the main, a minimum of 15 minutes apart while the sampling taps are left running. Both sets of samples must pass for the main to be approved for release.

F. Flushing and Disinfection Plan Requirements
A. The contractor shall submit a flushing and disinfection plan in accordance with the requirements listed in this standard. Water mains shall not be flushed & disinfected without receiving approval from the Utilities Department.

B. All Flushing and Disinfection water shall be potable water from the City’s active Water Distribution System, supplied through a temporary jumper and backflow prevention assembly with a passing inspection, installed and supplied by the contractor. A passing inspection shall be provided to the Utilities Department before beginning.

G. Basic Disinfection Procedure for New Mains
A. The basic disinfection procedure consists of:

1. Inspecting materials to be used to ensure their integrity.

2. Preventing contaminating materials from entering the water main during storage, construction, or repair and noting potential contamination at the construction site.

3. Removing, by flushing or other means, those materials that may have entered the water main or appurtenances.

4. Preventing contamination of existing mains from cross-connection during flushing, pressure testing, and disinfection.

5. Pressure testing the water main to ensure that the main meets allowable leakage rate.

6. Chlorinating and adequately documenting the process used for disinfection.

7. Ensuring that all valves, hydrants, blowoffs, and other pipeline appurtenances are thoroughly operated so that they maintain sufficient contact with the chlorine solution during the disinfection process.

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Potable Water System Construction Standards Page CS 8-14 CS-SEC 08-UD Review (Aug 2024)

8. Flushing the chlorinated water from the main in accordance with ANSI/AWWA C655.

9. Determining the bacteriological quality of water samples collected from the pipe by a laboratory after disinfection.

10. Final connecting of the newly disinfected water main to the active distribution system without sacrificing sanitary practices and conditions.

H. Flushing

1. Flushing is no substitute for preventive measures during construction.

2. Before the main is chlorinated, it shall be filled with potable water to eliminate air pockets and flushed to remove particulates.

3. High velocity flushing shall be completed before the disinfection process.

4. Only a certified Water Distribution Operator with the City of Vacaville Utilities Department shall operate valves within the active Water Distribution System.

5. The contractor and designer shall ensure temporary connection backflow jumper, and flushing points are adequately sized to meet or exceed required flushing velocities.

6. The contractor shall verify with the Construction Inspector and Water Distribution Operator that all system valves within the project limits are open prior to flushing. If the approved flushing and disinfection plan dictates unidirectional flushing, where valves are operated within the project limits during flushing, contractor shall operate valves in accordance with the plan under the supervision of a Water Distribution Operator with the Utilities Department.

7. The flushing velocity in the main shall not be less than 3.0 ft/s.

8. The flushing duration shall replace the water in the main 3 times and until all discharged water runs clear and free of debris.

9. The contractor shall demonstrate to the Construction Inspector and Water Distribution Operator that adequate flushing velocity and duration is being achieved.

10. The contractor shall ensure adequate means of drainage or containment of flushing water, away from the construction work area and to prevent environmental or property damage.

I. Chlorine Disinfection
A. Chlorine disinfection shall comply with the American Water Works Association Standard for Disinfection of Water Mains (C651-23) Continuous-Feed Method and as specified below B. The continuous-feed method consists of completely filling the main with potable water, removing air pockets, flushing the completed Item 9.f
Potable Water System Construction Standards Page CS 8-15 CS-SEC 08-UD Review (Aug 2024) main to remove particulates, and refilling the main with potable water that has been chlorinated to a minimum dose of 25 mg/L, being cautious to not overly chlorinate the main. After a 24-h holding period in the main, there shall be a free chlorine residual of not less than 10 mg/L.

1. Disinfection inspections shall begin only after a passing the pressure test and flushing has been completed.

2. At a point no more than 10ft downstream from the beginning of the new main, water entering the new main shall receive a dose of chlorine fed at a constant rate such that the water will have no less the 25mg/l free chlorine concentration.

3. Chlorine shall be drawn through all valves, mains, hydrant runs, services, and other appurtenances and be checked at regular intervals.

4. Chlorine application shall not cease until the entire main is filled with chlorinated water at a minimum dose of 25 mg/L. The chlorinated water shall be retained in the main with no use for at least 24 hours, during which time valves in the treated section should be operated to ensure disinfection of the appurtenances. Before starting the 24-hour hold period, the contractor shall demonstrate to the Construction Inspector and Water Distribution Operator that the free chlorine residual is at a minimum of 25mg/l throughout the new main. Before starting the 24- hour hold period, the contractor shall demonstrate to the Construction Inspector and Water Distribution Operator that the free chlorine residual is at a minimum of 25mg/l throughout the new main.

5. At the end of a 24-hour period, the treated water in all portions of the main shall have a residual of not less than 10 mg/L of free chlorine. The contractor shall demonstrate to the Construction Inspector and Water Distribution Operator that the free chlorine residual is above a minimum of 10mg/l throughout the new main.

6. Upon approval by the Utilities Department, the water system shall be flushed to remove concentrated chlorine. Flushing shall continue, until the remaining water has a chlorine residual representative of that in the surrounding active Water Distribution System (typically around 1 mg/l) and a turbidity of 1 NTU or less.

7. Chlorinated water shall be neutralized to 0mg/l chlorine residual prior to discharge. Discharge location and neutralization methods shall be documented in the SWPPP and Flushing & Disinfection Plan coordination with and approved by the Department of Public Works and Utilities.

8. Chlorinated water resulting from flushing newly installed water lines may only be discharged into the City’s sewer system with the specific permission of the Utilities Department. Prior to discharging into the sewer system, the contractor shall receive authorization from the Item 9.f
Potable Water System Construction Standards Page CS 8-16 CS-SEC 08-UD Review (Aug 2024) Utilities Department and incur all charges for water discharged into the system.

9. At the end of each flushing exercise, and prior to tying into the City water system, the City shall prepare a bill for water usage. This bill shall be paid before the project is signed off.

10. Chlorinated water shall not be disposed of into environmentally sensitive areas (i.e., under oak trees, vernal pools, man-made or natural streams, drainage systems, etc.) during any time of the year.

11. All discharges into the sewer system shall be governed by the following conditions:

C. Discharge into the sewer system shall be done in such a manner to avoid surcharging the sewer system.

D. No discharge into the sewer system shall be permitted on rainy days.

E. No discharge shall be permitted upstream of a small lift station.

F. An approved air gap shall be maintained at all times. Air gap distances shall be calculated as 2.5 times the pipe diameter. In no case shall the air gap be less than 12-inches.

J. Water Quality Sampling
Sampling locations shall be identified on the approved Flushing and Disinfection Plan.

A “set” of bacteriological samples includes all samples collected along the length of the pipeline for presence/absence of total coliform bacteria & E.

Coli, as well as a heterotrophic plate count (HPC) test.

Allow 48 hours for each sample set analysis.

All Water Quality sample analysis shall be performed by an ELAP accredited laboratory. Samples shall be collected by Water Distribution Operators of the Utilities Department or a third-party contract laboratory.

Current ELAP accreditation of third-party labs shall be submitted to the Utilities Department.

Sampling procedures shall comply with the American Water Works Association Standard for Disinfection of Water Mains (C651-23) The primary means of ensuring the sanitary integrity of a main are the sanitary handling of materials, the practices during construction, and continual inspection of work. After disinfection and final flushing such that typical system chlorine residuals are present, samples shall be collected as follows:

For new mains, there are two options for the bacteriological testing for total coliform analysis. The preferred option shall be dictated on the approved Flushing and Disinfection Plan.

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Potable Water System Construction Standards Page CS 8-17 CS-SEC 08-UD Review (Aug 2024) Option A: After flushing the new main and all appurtenances of heavily chlorinated water, take an initial set of samples. After a minimum of 16 hours, with no water usage from the main, collect another set of samples.

Both sets of samples shall be absent from total coliform & E. coli and an HPC result less than 500 colony forming units to be approved for release.

Option B: After flushing the main of heavily chlorinated water, let it sit for a minimum of 16 hours without any water use. Then collect, without flushing the main, two sets of samples a minimum of 15 min apart while the sampling taps are left running. Both sets of samples shall be absent from total coliform & E. coli and an HPC result less than 500 colony forming units to be approved for release.

A set of samples includes all samples collected along the length of the pipeline. For new mains, sets of samples shall be collected every 1,200 ft of the new water main, plus one set from the end of the line, from each branch greater than one pipe length, and any new sample stations within the project limits.

Chlorine residual and bacteriological sample requirements must be met at all designated sample locations.

Samples for bacteriological analysis shall be collected in sterile bottles treated with sodium thiosulfate.

A combination blowoff and sampling tap shall be installed and supplied by the contractor and be used for collection of samples unless otherwise approved by the Utilities Department. The sampling pipe shall be dedicated, clean, disinfected, and flushed before sampling.

Special Circumstances
If unsatisfactory bacteriological sample results are collected, the contractor shall be required to flush and re-disinfect the new water main until satisfactory results are collected.

If trench water has entered the new main during construction or if, in the opinion of the Construction Inspector or Water Distribution Operator, excessive quantities of dirt or debris have entered the new main, bacteriological samples shall be taken at intervals of approximately 200 ft, and the sampling locations shall be identified on the approved flushing and disinfection plan. Samples shall be taken of water that has stood in the new main for at least 16 hours after final flushing has been completed.

If a pipeline is offline and not promptly returned to service, the situation shall be evaluated to determine if the water quality has been impacted and if additional testing and further action, such as but not limited to flushing and re-disinfection, is warranted.

K. Final Connection to Existing Main
New water mains and appurtenances must be completely installed, pressure tested, flushed, disinfected, and satisfactory bacteriological Item 9.f
Potable Water System Construction Standards Page CS 8-18 CS-SEC 08-UD Review (Aug 2024) sample results received before making permanent connections to the active distribution system. Sanitary construction practices must be followed during installation of the final connection so that there is no contamination of the new or existing water main with foreign material or groundwater.

L. Connections equal to or less than one pipe length (generally less than 20 ft).

The new pipe, fittings, and valve(s) required for the connection may be spray disinfected or swabbed with a minimum 1 percent solution of chlorine just before being installed if the total length of the connection from the end of a new main to the existing main is equal to or less than 20 ft.

M. Connections greater than one pipe length (generally greater than 20 ft).

The pipe required for the connection must be set up above ground and disinfected with bacteriological samples taken as described in this standard if the total length of the connection from the end of a new main to the existing main is greater than 20 ft. After satisfactory bacteriological sample results have been received for the pre-disinfected pipe, the pipe can be used in connecting the new main to the active distribution system. Between the time satisfactory bacteriological sample results are received and the time that the connection piping is installed, the ends of the piping must be sealed with watertight caps or plugs.

A tie-in procedure shall be submitted and approved by the Utilities Department prior to the proposed work. The Contractor shall allow up to 7 days review. The new main shall be tied into the existing Water Distribution System within 10 working days upon successful completion of all testing procedures.

If the new main cannot be tied into the City system within 10 working days, the new system shall maintain a chlorine residual of 0.5 to 1.0 ppm or be subject to water quality testing, flushing and re-chlorination.

Conform to AWWA C651 site sampling procedures.

The pipe shall remain out of service until satisfactory bacteriological results are obtained. If necessary, chlorinating, flushing, and sampling of the water main shall be repeated until satisfactory bacteriological results are obtained.

A. DISPOSAL OF FLUSHING WATER - The disposal of flushing water shall be performed by the Contractor in accordance with the Connection and Testing Plan. Sanitary sewers may be acceptable locations for disposal upon approval by the Department of Public WorksUtilities Department.

Storm drains may be acceptable locations with dechlorination to 0.0 mg/L chlorine. Testing of the disposal water to confirm complete neutralization of chlorine shall be performed in the presence of the Certified Distribution System Operator.

Item 9.f
Potable Water System Construction Standards Page CS 8-19 CS-SEC 08-UD Review (Aug 2024) Proper mitigation measures shall be identified if there is any possibility that water discharge will cause damage to the environment. The Contractor shall be responsible for any penalties associated with discharging flushing water containing chlorine.

CS 8-14 CONSTRUCTION WATER:

When water is desired prior to operation of the fully tested system, a separate bacteria test shall be taken after the pipe has been backfilled to 24 inches over the top. The preliminary test does not eliminate the need for a bacteria test after the required hydrostatic pressure test. All tests shall be tested by an ELAP certified laboratory at the expense of the Developer. Connection to the existing distribution system shall comply with CS-8-11. Under no circumstances shall anyone other than a Certified Distribution System Operator of the Department of Public WorksUtilities Department, open or close any valve connected to pipe lines approved for construction water use. All construction water connections must conform with drawing 5-11.

Fire Hydrant Supply – A permit and hydrant meter shall be obtained from the Utilities Department or Public Works of Public Works prior to drawing any water from a fire hydrant.

Item 9.f
Potable Water System Construction Standards Page CS 8-20 CS-SEC 08-UD Review (Aug 2024) CS 8 Report 1
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Potable Water System Construction Standards Page CS 8-21 CS-SEC 08-UD Review (Aug 2024) Item 9.f
Potable Water System Construction Standards Page CS 8-22 CS-SEC 08-UD Review (Aug 2024) Item 9.f
Potable Water System Construction Standards Page CS 8-23 CS-SEC 08-UD Review (Aug 2024) Item 9.f
Potable Water System Construction Standards Page CS 8-1 CS-SEC 08-UD Review (Aug 2024)

CONSTRUCTION STANDARDS
SECTION CS 8

POTABLE WATER SYSTEMS
CS 8-01 GENERAL: Potable water systems improvements shall be constructed in conformance with the City Standard Specifications and Standard Drawings.

The certification must be approved by the Director of Utilities and/or the City Engineer prior to installation of the materials or equipment. Such certification shall reference and specifically identify the materials and equipment delivered to the job site. All other testing requirements required by these City Standard Specifications shall be performed by the Contractor at its own expense unless otherwise noted.

All testing requirements are to be completed prior to any issuance of building permits and occupancy, including for model homes.

CS 8-02 WATER MAINS: Pipe materials shall be as specified on the Project Plans and/or Special Provisions and shall conform to the following:

A. DUCTILE IRON PIPE (DIP)

1. Ductile iron pipe for sizes 4-inch through 12-inch shall conform to AWWA C151 for a minimum pressure Class 350 unless otherwise specified.

Sizes 18 inches and larger shall conform to AWWA C151 and the pressure class shall be as noted on the Project Plans and or as specified in the Special Provisions.

3. The interior surface of all ductile iron pipes shall be standard thickness, cement-mortar-lined and seal coated in conformance with AWWA C104.

4. The exterior surface of the pipe shall have a standard asphaltic coating.

Attachment 2
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Potable Water System Construction Standards Page CS 8-2 CS-SEC 08-UD Review (Aug 2024)

6. Provide cathodic protection for all metallic pipe and service materials.

Methods and materials shall be determined by an engineer and be approved by the Director of Utilities.

B. POLYVINYL CHLORIDE PIPE (PVC)

1. Polyvinyl chloride pipes shall be manufactured in accordance with AWWA C900 for polyvinyl chloride (PVC) pressure pipe for water. The pipe shall have cast-iron pipe equivalent outside diameter and shall have a dimension ratio of 14 (Class 305) unless a higher class of pipe is specified on the Project Plans or in the Special Provisions. a. The pipe shall be blue or white in color.
b. The pipe and gaskets shall be kept clean and protected against sunlight and heat damage. Sun or heat damaged pipe may be rejected at the Inspector’s discretion.
c. Pipe manufactured more than 18 months prior to its installation will not be permitted.
d. Rejected pipe shall be immediately removed from the job site. e. The beveled end of the pipe shall be cut off squarely before insertion into a mechanical joint. The cut end shall be de-burred such that it does not cut the elastomeric gasket when it is slipped over the cut end of the pipe.

Lubricant shall be as recommended by the pipe manufacturer and shall not adversely affect the potable qualities of the water to be transported.

3. MARKINGS – The pipe shall be clearly marked in accordance with AWWA C900. Additionally, the pipe shall be manufacturer date-coded and the City shall be provided the manufacturer’s coding for translation.

The pipe shall be installed with the manufacturing label showing on the top.

Item 9.f
Potable Water System Construction Standards Page CS 8-3 CS-SEC 08-UD Review (Aug 2024) C. FITTINGS

1. All fittings, including but not limited to bends, tees, crosses, and reducers for use with either ductile iron or polyvinyl chloride pipe shall be ductile iron and shall be restrained in accordance with the requirements of Section CS 8-09, “Thrust Restraint” of these specifications. Ductile iron fittings for mechanical joints shall conform to “compact ductile iron fittings” as specified in AWWA C153 and flange fittings shall conform to AWWA C110.

2. All cross and tee fittings shall have flange ends. All other fittings shall have either flange or mechanical joint ends.

3. All fittings except for tapping sleeves shall be either factory fusionbonded epoxy lined and coated in accordance with AWWA C116 or cement mortar lined and seal coated in accordance with AWWA C104.

4. All flange bolts, nuts, and washers, installed below grade shall be Type 304 stainless steel.

5. Teflon anti-seize compound shall be used on bolt and tie rod threads.

A. Valves shall open left (counter-clockwise) and be provided with 2-inch square wrench nuts.

B. Valves shall have a full opening of equal diameter of the connecting pipe.

C. All internal ferrous metal surfaces shall be fully coated with factory applied epoxy as per AWWA C550. The coating thickness shall be a nominal thickness of 10 mils.

D. The wedge shall be fully encapsulated with styrene butadiene rubber. There shall be no voids or exposed iron on the cast iron wedge.

E. The rubber on the wedge guide lugs shall be protected with an acetyl copolymer bearing cap.

F. The valves shall be rated for 250 psig.

G. The stem shall be machined from a forged manganese bronze bar stock and shall have a forged thrust collar. Cast stems are not acceptable.

H. Valves shall have class 125 flange ends in accordance with ANSI B-16.1.

Item 9.f
Potable Water System Construction Standards Page CS 8-4 CS-SEC 08-UD Review (Aug 2024) I. A valve box shall be installed over each valve with an 8-inch diameter riser.

J. Gate valves shall conform to the Standard Drawings.

CS 8-04 BUTTERFLY VALVES: Valves 18 inches and larger shall be butterfly valves and shall be manufactured in accordance with AWWA C504 for Class 150B service and shall comply with the following requirements:

A. Valve bodies shall be constructed of cast iron ASTM A-126 Class B and conform to AWWA C504 in terms of laying lengths and minimum body shell thickness. Valves shall have class 125 flange ends in accordance with ANSI B-16.1.

B. Valve disks shall be made from cast iron ASTM A-126 Class B (18”) or ASTM A-48 Class 40 (24”). Sizes 30-inch and larger shall be ductile iron ASTM A-536 Grade 65-45-12. The disc shall be furnished with a type 316 stainless steel seating edge to mate with the rubber seat on the valve body.

C. Valve seats shall be Buna-N rubber located on the valve body. Valve sizes 20 inches and smaller shall have a bonded seat that meets test procedures outlined in ASTM D429 Method B. Sizes 24” and larger shall be retained in the valve body by mechanical means without the use of metal retainers or other devices located in the flow stream.

D. Valve shafts shall be type 304 stainless steel, conforming to ASTM A-276.

Shaft seals shall be standard self–adjusting chevron “V” type packing. Shaft seals shall be of a design allowing replacement without removing the valve shaft.

E. Valve bearings shall be sleeve type, which are corrosion resistant and selflubricating. The bearing load shall not exceed 1/5 of the compressive strength of the material.

F. Valve actuators shall be fully grease packed and have stops in the open/close position. The actuator shall have a mechanical stop which will withstand an input torque of 450 ft. lbs. against the stop. The traveling nut shall engage alignment grooves in the housing.

G. The valve interior and exterior surfaces except for seating shall be coated with a nominal thickness of 7-mil factory applied epoxy in accordance with AWWA C550. Rubber lined interiors are not acceptable.

H. All valves shall be factory hydrostatic and leak tested. The leak test shall be performed at a differential pressure of 150 psig with the disk in a closed position. In a slightly open position, internal hydrostatic pressure equal to 300 psig shall be applied to the inside of the body for 5 minutes.

I. A valve box with an 8-inch diameter riser shall be installed over each valve.

J. Butterfly valves shall conform to the Standard Drawings.

Item 9.f
Potable Water System Construction Standards Page CS 8-5 CS-SEC 08-UD Review (Aug 2024) CS 8-05 VALVE BOXES: Valve boxes shall be of precast concrete and shall have a cast iron face and a cast iron traffic lid marked “WATER.” A. Valve box risers shall be set perpendicular to the axis of the water valve body and centered over the valve operating nut.

B. Where valves are placed in unimproved easement areas the valve boxes shall be set 3 inches above grade and shall be marked by the installation of a reflectorized “Water Line Warning” marker.

C. The Water Line Warning marker installation shall conform to the Standard Drawings.

A. The bury shall have an inlet diameter of 6 inches.

E. The hydrant shall be painted white in the field with rust resistant gloss enamel paint. Glass beads shall be applied liberally to the wet paint surface.

F. For hydrants installed in locations with a high risk of impact, such as corners of major intersections, near commercial driveways or private property, a break-off check valve installed between the riser spool and hydrant may be required by the City per City Standard Drawing 5-15 and, if deemed necessary, shall be identified on Project Plans.

CS 8-08 WATER SERVICE LINES: The size and location of water service lines shall be shown on the Project Plans. Materials and installation shall be as follows:

Item 9.f
Potable Water System Construction Standards Page CS 8-6 CS-SEC 08-UD Review (Aug 2024) A. PEX-a (crosslinked polyethylene) tubing shall be used for service sizes of 1, 1 1/2, & 2 inches. Municipex or equal.

1. Crosslinked Polyethylene direct bury pressure pipe shall meet the standards of AWWA C904 and ASTM F876. ,

2. Manufacturing Standard: Must comply with AWWA C904 (Crosslinked Polyethylene Pressure Pipe for Water Service).

3. Dimensions: Produced to Copper Tube Size (CTS) with a Standard Dimension Ratio of SDR9.

4. Material Designation: Must have a PEX material designation code of 3306 per ASTM F876, indicating the highest level of chlorine and UV resistance.

5. Pressure/Temperature Ratings:
a. 160 psi @ 73.4°F (standard rating).
b. 200 psi @ 73.4°F (when using a 0.63 design factor).
c. 100 psi @ 180°F.

6. UV Protection: Must feature a co-extruded UV-resistant outer shield (typically blue) providing a minimum of 1 year of protection from sunlight.

7. Certifications: Third-party certified to NSF/ANSI 14 & 61 (potable water) and CSA B137.5.

B. Fittings shall be Mueller Insta-Tite 2.0 or equal.

1. Fitting Standard: Copper service threads (CTS) manufactured and tested in accordance with AWWA C800 (Underground Service Line Valves and Fittings).

2. Material Construction:
a. Body: Cast bronze (ASTM B594 C89833 or C87850).
b. Grip Ring: Red-colored molded acetal plastic (specifically for CTS sizes) reinforced with a 301 Stainless Steel "one-way" ring. c. Gasket: EPDM rubber (ASTM D2000) for a positive leak-tight seal. d. Pressure Rating: Designed to have a pressure-holding capability greater than the pipe or valve to which it is connected in potable water applications.
e. Operating Temperature: Suitable for a range of +32°F to +100°F.

3. Installation Requirements
a. Insertion Depth: Pipe must be cut square and stabbed to the specific depth (e.g., 1-7/8" for 1" CTS) to ensure the grip ring engages. b. Backfilling: Connections buried in sandy or gritty soil should be taped to prevent debris from entering the mouth of the connection.

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Potable Water System Construction Standards Page CS 8-7 CS-SEC 08-UD Review (Aug 2024)

4. Installation shall be in accordance with the manufacturer’s recommendation.

5. Splicing of pipe between the main and angle stop shall not be permitted.

6. When required, service lines shall be sleeved in poly-ethylene tubing (PE) tubing or cased in Schedule 40 PVC with end seals. 1-inch and 1- 1/2-inch service lines shall be cased in 2-inch pipe; 2-inch service lines shall be cased in 3-inch pipe to protect service lines. a. Copper tubing may be used for service lines of 1, 1 ½ & 2 inches, and may be required by designers or the City. Where required, it shall be indicated and specified on the Project Plans.

7. Copper tubing shall be standard size and seamless. All copper tubing and fittings shall meet all requirements of AWWA C800.

8. Type “K” copper shall be used and shall be polyethylene coated. a. Ductile Iron Pipe (DIP) shall be used for services of 3 inches in size and larger, including lines for all appurtenances. The DIP service pipe shall conform to the provisions of Section CS 8-02, “Water Mains.” The 4-inch by 3-inch reducer and 3-inch spool shown on the 3-inch water service Standard Drawing shall be Class 53. b. Service line valves and fittings shall conform to AWWA C800 and the Standard Drawings.

9. Services up to and including 2-inch in diameter shall be equipped with a corporation stop at the main with an angle stop at the back of sidewalk.

10. A flanged gate valve shall be furnished at the mainline tee for services 3-inch in diameter and larger.

11. The size of the corporation stop and angle stop or gate valve shall be the same as the service line except in the case of a 3 inch service.

12. A meter box at the back of walk or as shown on the plans is required for all services.

13. Only neoprene or rubber gaskets shall be used between the saddle and the pipe.

14. All valves 2-inches in diameter and smaller shall be of a ball type rated at 300 psi.
a. The location of each service shall be permanently indicated by inscribing the letter “W” in the curb directly above the line when the service is perpendicular to the street centerline or at the right angle to the end of the service for a skewed or angling service. b. The water main shall be tapped at the service locations shown on the Project Plans and construction completed by the Contractor in accordance with the Standard Drawings. A minimum distance of 18- inches between taps must be maintained.

Item 9.f
Potable Water System Construction Standards Page CS 8-8 CS-SEC 08-UD Review (Aug 2024) CS 8-09 WATER SYSTEMS INSTALLATION:

2. PVC – The pipe shall be laid true and uniform to line and grade, with no visible change in alignment at any joint unless curved alignment is called for on the plans, in which case the installation shall be subject to the following criteria:
a. No deflections shall be allowed at a pipe bell to spigot joint. b. Curved alignments shall be constructed by manually bending the pipe or by providing a bell-by-bell PVC coupling or ductile iron fitting. c. The PVC coupling shall provide a maximum of 5 degrees of total angular deflection, (2 ½ degrees at each end).
d. The coupling shall be a Class 200 psi fabricated fitting conforming to AWWA C900.

Item 9.f
Potable Water System Construction Standards Page CS 8-9 CS-SEC 08-UD Review (Aug 2024) e. Deflections equal to and greater than 11¼ degrees shall be made with a ductile iron fitting and shall conform to AWWA C110 or C153.

Minimum pipeline radii for uniformly bending the pipe without couplings or fittings are:

R = 350 feet for 8-inch diameter pipe
R = 550 feet for 12-inch diameter pipe
D. THRUST RESTRAINT

2. Restrained Joints – Flange, restrained push-on, or restrained mechanical joints may be used in lieu of concrete thrust blocks when approved by the Director of Utilities and/or the City Engineer and shall be the type accepted by the pipe manufacturer. PVC pipe restraint shall conform to ASTM F-1674. The type of restraining device and specific product shall be subject to the approval of the Director of Utilities and/or the City Engineer through the submittal process. Thrust restraint calculations with recommended restrained length on each side of the fitting and appurtenance shall be prepared and submitted for approval to the Director of Utilities and/or the City Engineer.

E. CONSTRUCTION INTERRUPTION - Whenever pipe laying is discontinued for an hour or more, the open ends of all mains and fittings shall be closed with watertight plugs or bulkheads. The plug or bulkhead shall not be removed unless, or until, the trench is dry and the Contractor is ready to proceed with the work.

F. SYSTEM TIE-INS - When a water service is to be connected to an existing line, the Contractor shall make the tap or tie-in into the existing main, under the direct supervision of a Certified Distribution System Operator of the Utilities Department. The Contractor shall contact the Utilities Department and schedule a Pre-System Tie-in meeting with the Certified Distribution System Operator to occur at least 72 hours in advance of the time of the proposed tap or tie-in. The Contractor shall notify all affected customers in case of a shutdown/interruption of service. Customers shall receive notification no fewer than 48 hours prior to the shutdown.

Item 9.f
Potable Water System Construction Standards Page CS 8-10 CS-SEC 08-UD Review (Aug 2024) NOTE: Under no circumstances shall anyone other than a Certified Distribution System Operator of the Utilities Department open or close any valve connected to a City-operated water system.

H. Trench excavation, bedding and backfill shall conform to Section CS 2 and Section CS 3 of the City Standard Specifications.

CS 8-11 WATER FOR TESTING, FLUSHING, AND DISINFECTION: Water for hydrostatic testing, flushing, and disinfection shall be supplied by a new valve installed by the Contractor and operated by a Certified Distribution System Operator of the Utilities Department. Alternative methods shall not be permitted except at the sole discretion of the Director of Utilities and/or the City Engineer.

CS 8-12 HYDROSTATIC PRESSURE TESTING. The pipe shall be subject to a hydrostatic pressure test prior to the placement of any asphalt.

B. Testing of a partial system will not be permitted unless otherwise directed by the Director of Utilities and/or the City Engineer.

C. The pipe to be tested shall have only one physical connection to the existing water system. The new valve at the single point of connection shall be solely operated by a Certified Distribution System Operator of the Utilities Department. All other work related to the Hydrostatic Pressure Testing shall be performed by the Contractor.

D. The pipe shall be slowly filled with water by a Certified Distribution System Operator of the Utilities Department and all air shall be expelled from the Item 9.f
Potable Water System Construction Standards Page CS 8-11 CS-SEC 08-UD Review (Aug 2024) pipe by the Contractor. The release of the air may be accomplished by the Contractor by opening hydrants and service line cocks at the high points of the system and the blow-offs at all dead ends. The valve controlling the admission of water into the section of pipe to be tested should be opened wide before shutting the hydrants or blow-offs. After the system has been filled with water and all air expelled, all the valves controlling the section (including the connection to the existing system) to be tested shall be closed and the line be allowed to set for a period of not less than 24 hours.

G. The allowable leakage in the test section shall be in accordance to AWWA C600 and shall not exceed 0.0919 gallons per hour per inch diameter per 1,000 feet of main being tested.

H. All leaks shall be immediately corrected and the system again subjected to a hydrostatic pressure test. Even if the leakage is less than the allowable, all observed leaks shall be repaired.

I. Upon the successful completion of the hydrostatic pressure test and the water bacteria test, and prior to final paving, the remaining connections, if any, shall be made in accordance with AWWA C651.

J. The backfill material for the tie-in shall be Class II aggregate base compacted to 95% relative compaction.

CS 8-13 FLUSHING AND DISINFECTION – All work shall conform to the latest revision of AWWA C651.

B. INITIAL FLUSHING – Flushing shall be performed under the direct observation of a Certified Distribution System Operator of the Utilities Department. A minimum continuous velocity of 3 feet/second shall be achieved for the duration of flushing. Flushing shall be continuous until all the water in the line has been replaced a minimum of two times, and for such additional time as necessary for the blow-off water to flow clean and free of debris. Blow-offs, curb stops, hydrants, or other outlets, temporary Item 9.f
Potable Water System Construction Standards Page CS 8-12 CS-SEC 08-UD Review (Aug 2024) or permanent, shall be installed on water mains to allow the minimum continuous flushing flow in the main.

C. DISINFECTION - All disinfection and flushing activities shall be performed under the direction of a Certified Distribution System Operator of the Department of Utilities.

2. Chlorine shall be applied in a stream of water entering the main in a concentration of not less than 25 mg/L free chlorine.

E. BACTERIOLOGICAL SAMPLING - After flushing, samples of the water shall be taken for bacteriological analysis and delivered to the laboratory.

No hose or fire hydrant shall be used in the collection of samples. Sampling procedures in AWWA C651 shall be followed before approving a main for release, using Option ‘A’ or Option ‘B”, as follows:

F. Flushing and Disinfection Plan Requirements

1. The contractor shall submit a flushing and disinfection plan in accordance with the requirements listed in this standard. Water mains shall not be flushed & disinfected without receiving approval from the Utilities Department.

2. All Flushing and Disinfection water shall be potable water from the City’s active Water Distribution System, supplied through a temporary jumper and backflow prevention assembly with a passing inspection, installed Item 9.f
Potable Water System Construction Standards Page CS 8-13 CS-SEC 08-UD Review (Aug 2024) and supplied by the contractor. A passing inspection shall be provided to the Utilities Department before beginning.

G. Basic Disinfection Procedure for New Mains

1. The basic disinfection procedure consists of:

2. Inspecting materials to be used to ensure their integrity.

3. Preventing contaminating materials from entering the water main during storage, construction, or repair and noting potential contamination at the construction site.

4. Removing, by flushing or other means, those materials that may have entered the water main or appurtenances.

5. Preventing contamination of existing mains from cross-connection during flushing, pressure testing, and disinfection.

6. Pressure testing the water main to ensure that the main meets allowable leakage rate.

7. Chlorinating and adequately documenting the process used for disinfection.

8. Ensuring that all valves, hydrants, blowoffs, and other pipeline appurtenances are thoroughly operated so that they maintain sufficient contact with the chlorine solution during the disinfection process.

9. Flushing the chlorinated water from the main in accordance with ANSI/AWWA C655.

10. Determining the bacteriological quality of water samples collected from the pipe by a laboratory after disinfection.

11. Final connecting of the newly disinfected water main to the active distribution system without sacrificing sanitary practices and conditions.