Item 7 - Acceptance of Lester J Berglund Water Treatment Plant Clearwell Bypass Project; Bid No 21-020February 7, 2023, Item #7DATE: TO: FROM: CONTACT: SUBJECT: Summary: AGENDA REPORT February 7, 2023 Honorable Mayor and Members of the City Cou,ry:j Eric Heidemann, Director of Public Works -r11" Shadi Sarni, Principal Civil Engineer b5 (858) 668-4717, ssami@poway.org City of Poway CITY COUNCIL Acceptance of the Lester J. Berglund Water Treatment Plant Clearwell Bypass Project; Bid No. 21-020 with G.S.E. Construction Company, Inc. as Complete and Update on the Water Infrastructure Improvement Program On July 20, 2021, the City Council awarded the contract for the Lester J. Berglund Water Treatment Plant Clearwell Bypass Project; Bid No. 21-020 to G.S.E. Construction Company, Inc. in the amount of $7,273,700. This action will accept the project as complete. This report also presents a status update on each project within the Water Infrastructure Improvement Program Recommended Action: It is recommended that the City Council: (1) Accept the Lester J. Berglund Water Treatment Plant Clearwell Bypass Project as complete; (2) Authorize the City Clerk to file and record the Notice of Completion; (3) Authorize the release of the retention in the amount of $379,131.75 if unencumbered, 45 days after City Council acceptance; (4) Release the Fidelity and Deposit Company of Maryland Bond for Material and Labor in the amount of $7,273,700.00 after the release of retention; and (5) Retain the Fidelity and Deposit Company of Maryland Bond for Faithful Performance for a period of one year. Discussion: The following projects make up the "Water Infrastructure Improvement Program": The Clearwell Bypass Project consists of bypass pipelines, a pump station, a pressure regulating station and two temporary bypass tanks. Each tank has a storage capacity of 1.4 million gallons. The bypass pipelines, pump station and pressure regulating station are located within City property at the Lester J. Berglund Water Treatment Plant site, as well as the Public Works Operations Yard and parking lot. The two tanks are located on the softball field at Lake Poway Park. This bypass system allows the 1 of7
February 7, 2023, Item #7clearwell, the current storage system for treated water, to be taken offline for replacement. Construction started August 30, 2021 and was completed September 30, 2022. Construction Change Orders total $308,935.00. This amount is 4.2 percent of the total construction contract amount. The final contract amount is $7,582,635.00. Staff recommends accepting the work as complete in accordance with the standards and specifications of the contract. The Clearwell Replacement Project consists of replacing the existing clearwell with two new 4-million-gallon prestressed concrete tanks. The existing clearwell has reached the end of its useful life and is in need of replacement to maintain reliable service to Poway residents. This project is currently at the final design stage and is anticipated to be advertised for bids in spring 2023. Request for Proposals for a qualified construction management and inspection firm was released December 1, 2022. Proposals are due February 1, 2023 and selection is anticipated in March 2023. The Council request for award of the consultant agreement for the construction management and inspection services is anticipated to occur at the April 4, 2023 Council meeting. Construction is anticipated to start in summer 2023 and end in fall 2025. The Poway Treated Water Facilities and Redundant Pipeline Project and the San Diego County Water Authority (SDCWA) Poway-5 (POW-5) Turnout and Flow Control Facility (FCF) Project collectively provide Poway with its first treated water connection to SDCWA's treated water aqueduct, as well as redundant pipelines. The SDCWA POW-5 Turnout and FCF Project consists of a flow control facility, a turnout and will be owned and operated by the SDCWA once constructed. The project consisting of water transmission pipelines, a pump station and a forebay is referred to as the Poway Treated Water Facilities and Redundant Pipeline Project and will be owned and operated by the City of Poway once constructed. These two projects will help diversify Poway's water supply portfolio and allow for operational flexibility and plant maintenance. They will also provide a redundant pipeline to the 36" water transmission line on Lake Poway Road, which is currently the single transmission line that carries treated water to the distribution system. Both projects will be at the 50% design stage in spring 2023 and are scheduled to be advertised for bids in winter 2024. Award of the construction contract for both projects is anticipated in Spring 2024. Construction of both projects is anticipated to start in summer 2024. Construction of the SDCWA POW-5 Turnout and FCF is anticipated to end in spring 2025 and the construction of the Poway Treated Water Facilities and Redundant Pipeline project is anticipated to end in winter 2026. Environmental Review: This action is not subject to review under the California Environmental Quality Act (CEQA). Fiscal Impact: Sufficient funds are available in the Lester J. Berglund Water Treatment Plant Clearwell Bypass Project (WTR0029) for the release of retention. Funds remaining in the project will be transferred to future water projects within the Water Infrastructure Improvement Program. Public Notification: None. 2 of7
February 7, 2023, Item #7Attachments: A. Water Infrastructure Improvement Program Graphics Reviewed/Approved By: Wendy ~nC..------Assistant City Manager 3 of7 Reviewed By: Alan Fenstermacher City Attorney Approved By: c~ City Manager
February 7, 2023, Item #7Existing
Clearwell
Temporary Pressure
Control Valves
"'
-Existing Water Pipeline
-Existing Storm Drain
... _ -Proposed Buried Water Pipeline
-Proposed Above-Ground Water Pipeline
-Proposed Above-Ground Overflow Pipeline
CITY OF POWAY LESTER BERGLUND WATER TREATMENT PLANT
OVERVIEW OF PROPOSED CLEARWELL BYPASS SYSTEM
February 7, 2023, Item #7
February 7, 2023, Item #7