October 18, 2022, Item #13
AG EN DA REPORT City of Poway
CITY COUNCIL
DATE: October 18, 2022
TO:
FROM:
Honorable Mayor and Members of the City :o~il
Eric Heidemann, Director of Public Works r'
Shadi Sarni, Principal Civil Engineer CONTACT:
(858) 668-4717 or [email protected]
SUBJECT: Water Infrastructure Improvement Program Update Summary:
This report provides a status update on each project within the Water Infrastructure Improvement Program.
Recommended Action:
This is an informational item and there is no recommended action.
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 clearwell, the current storage system for treated water, to be taken offline for replacement.
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.
The San Diego County Water Authority (SDCWA) Treated Water Connection and Redundant Pipeline Project provides Poway with its first treated water connection to the SDCWA's treated water aqueduct, as well as redundant pipelines. This project includes components that will be owned and operated by the SDCWA as well as components that will be owned and operated by 1 of 5
October 18, 2022, Item #13
the City of Poway once constructed. Therefore, to facilitate management of finances and capitalization of assets, this project was separated into two projects. The project consisting of a flow control facility and a turnout is referred to as the SDCWA Poway-5 (POW-5) Turnout and Flow Control Facility Project and will be owned and operated by the SDCWA once constructed. The project consisting of pipeline, a pump station and a forebay is referred to as the Poway Treated Water Facilities and Redundant Pipeline 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.
Environmental Review:
This item is not subject to review under the California Environmental Quality Act (CEQA).
Fiscal Impact:
None.
Public Notification:
None.
Attachments:
A. Water Infrastructure Improvement Program Graphics
Reviewed/Approved By:
Assistant City Manager
2 of 5
Reviewed By:
Alan Fenstermacher
City Attorney
October 18, 2022, Item #13
Existing
Clearwell
Temporary Pressure
Control Valves
LEGEND
-
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 CLEARWELL BYPASS SYSTEM
October 18, 2022, Item #13
4.0MG
ID:~ 10' SW : 16.5'
FFE 849
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4.0 MG i
10: 210' ~
SWD: 1611~'
,FFE: 849 -, ~
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October 18, 2022, Item #13