Near-Term Water Improvement Projects
Overview
The Near-Term Water Improvements Project combines two capital improvement projects with five separate areas of work:
- Project 1
- Turnout 4 Replacement and Booster Station
- Stoneridge Drive 24-Inch Water Main
- Sunol Boulevard 20-Inch Water Main
- Project 2
- Bernal Avenue 18-Inch Water Main
- Turnout 1 Refurbishment
These efforts are part of a larger initiative to maintain a reliable and balanced water system, addressing the limited availability of water from City-owned wells due to PFAS concentrations in and around Pleasanton.
Key components of the improvements project include:
- Site preparation and installation of a new prefabricated booster station at Turnout 4
- Installation of 3,200 linear feet of 24-inch PVC water main on Stoneridge Dr. from Johnson Dr. to Hopyard Rd.
- Installation of 4,500 linear feet of 20-inch ductile iron pipe on Sunsol Blvd. from Sycamore Rd. to Bernal Ave.
- Installation of 1,600 linear feet of 18-inch water main on Bernal Ave.
- Replacement of piping and specialty equipment at Turnout
Project 1 - CIP No. 24171
Turnout 4 Replacement and Booster Station
Project Description
Turnout 4, located at the intersection of Stoneridge Dr. and Hopyard Rd., connects to Zone 7’s 20-inch water supply line. Originally built in 1980 with a capacity of 4,500 gallons per minute (gpm), the turnout’s capacity has been reduced to below 1,000 gpm during peak demand due to pressure drops caused by other agencies filling their systems.
To meet future demands (up to 5,200 gpm):
- A new booster station will be installed to boost water pressure using electric pumps. It will include upgraded internal piping, flow meters and control valves, a pressure-regulating valve, vault repairs, and a flushing and sampling hydrant that will ensure the long-term reliability of the turnout and system. The booster station will be prefabricated off-site and placed at the location using a crane to minimize on-site construction and reduce disruption.
During construction, the existing turnout, fluoride system, traffic signal controller, and temporary booster pump will remain operational to ensure continuous service.
Location
Turnout 4 is located at the southwest corner of the intersection of Stoneridge Dr. and Hopyard Rd. and connects to Zone 7’s 20-inch supply line on Hopyard Rd.
Anticipated Timeline
A temporary booster station was added in August 2023, refurbishment of the existing infrastructure will be completed in early 2025, and a permanent booster station will be installed later in 2025.
More Information
Read more about the project in the March 19, 2024, City Council Agenda Report.
Stoneridge Drive 24-Inch Potable Water Main - In Progress
Project Description
The work includes the installation of approximately 3,200 linear feet of 24-inch fusible PVC water main pipe and 450 linear feet of ductile iron pipe with diameters ranging from 18 to 24 inches.
Location
Work on Stoneridge Drive will occur from Johnson Dr. to Hopyard Rd.
Anticipated Timeline
Construction of the main waterline along Stoneridge Dr. began on September 30 and is expected to be completed by the end of October 2024.
More Information
Read more about the project in the March 19, 2024, City Council Agenda Report.
Sunol Boulevard 20-Inch Water Main
Project Description
This project aims to increase the water capacity along Sunol Blvd. by:
- Installing 4,500 linear feet of new 20-inch water main to replace the aging 12-inch cast iron pipe
Upgrading to a 20-inch pipe will not only replace the 12-inch line but also increase overall system capacity, offering cost savings of around $300 per linear foot compared to installing both an 18-inch and a replacement 12-inch line.
Location
Located on Sunol Blvd. from the intersection of First St. and Bernal Ave. to Sycamore Creek.
Anticipated Timeline
Preparation work will be completed by the end of September 2024, with construction of the main line expected to begin in late 2024 and be completed by Spring 2025.
More Information
Read more about the project in the March 19, 2024, City Council Agenda Report.
Funding Sources
Initially, $986,487 was budgeted for the design phase across two projects: the Sunol Boulevard 20-Inch Water Main (CIP No. 24173) and the Turnout 4 Replacement and Booster Station with Stoneridge Drive 24-Inch Potable Water Main (CIP No. 24171). During the March 19 City Council meeting, the Pleasanton City Council approved combining these improvement projects to create the Near-Term Water Improvements Project (CIP No. 24171).
The total cost of the two projects is expected to be $10,641,025, including a contingency of $1.28 million for unforeseen construction costs. To cover the remaining expenses, the City will be reimbursed later through bond proceeds. Approximately $5 million will be funded by the Water Operating Fund (Fund 420) to be reimbursed once the bond proceeds are available. An additional $100,000 for cathodic protection work will be reimbursed by Zone 7.
Project 2 - CIP No. 24172
Bernal Water Line — Completed
Project Description
The project installed approximately 1,600 linear feet of 18-inch water main on Bernal Ave.
The City’s hydraulic model identified the need for a new 18-inch water line along Bernal Ave., replacing an existing 12-inch line that is insufficient to meet demand, leading to higher water velocities and potential pipeline failure. Approximately 1,600 linear feet of new pipe was installed from Turnout 5 to Vineyard Ave to increase capacity. While a new water line is being planned for the Bernal Bridge, an existing unused sewer line was repurposed as a temporary solution.
Location
The project took place along Bernal Ave., spanning approximately 1,600 linear feet from Turnout 5 at Nevada St to Vineyard Ave.
Anticipated Timeline
The project began in February 2024 and was completed in August 2024.
More Information
Read more about the project in the January 16, 2024, City Council Agenda Report.
Turnout 1 Refurbishment — In Progress
Project Description
The project replaced the piping and specialty equipment at Turnout 1, including the following improvements:
- Upgrade to internal piping, flow meters and control valves
- Installation of a pressure-regulating valve
- Vault repairs and the addition of a flushing and sampling hydrant, ensuring the long-term reliability of the turnout and system
In 2014, Turnout 1 was found to be redundant with Wells 5 and 6 and Turnout 2 meeting the demands in the local area. The turnout was taken out of service in 2014 after flooding from an unknown water leak that damaged the below-grade equipment.
With the presence of PFAS in portions of the aquifer that the City wells draw from, the City restricted the use of its wells and purchased additional water from Zone 7 at the existing turnouts to meet summer demands in 2023. The City’s water distribution system is designed to incorporate the locations of both the turnouts and City wells to maintain balanced system pressure. Changes to the volume of water entering the system through different turnouts and wells can cause pressure variations within the system. In 2023, the Water Supply Alternatives Study found that it was critical for Turnout 1 to be placed back into service to rebalance the water system pressure. Temporary improvements and repairs to the broken line were completed by the City and Zone 7 in spring 2023 and the turnout was put back in service.
Location
The project took place along Bernal Ave., spanning approximately 1,600 linear feet from Turnout 5 at Nevada St to Vineyard Ave.
Anticipated Timeline
The project began in February 2024 and was completed in September 2024.
More Information
Read more about the project in the January 16, 2024, City Council Agenda Report.
Funding Sources
The total project cost (Bernal Water Line and Turnout 1) was anticipated to be $2,205,420, covering design, contingencies, consulting, testing services, and City-supplied materials. On August 15, 2023, the City Council approved transferring $133,000 from the Annual Water Main Replacement for design services. The remaining costs were funded from the Water Operating and Maintenance Fund 420 reserve. The reserve balance will be replenished through a loan, in which the loan’s debt service is covered by the water rate increases.
Project 2
Bernal Water Line — Completed
Project Description
The project installed approximately 1,600 linear feet of 18-inch water main on Bernal Ave.
The City’s hydraulic model identified the need for a new 18-inch water line along Bernal Ave., replacing an existing 12-inch line that is insufficient to meet demand, leading to higher water velocities and potential pipeline failure. Approximately 1,600 linear feet of new pipe was installed from Turnout 5 to Vineyard Ave to increase capacity. While a new water line is being planned for the Bernal Bridge, an existing unused sewer line was repurposed as a temporary solution.
Location
Anticipated Timeline
More Information
Read more about the project in the January 16, 2024, City Council Agenda Report.
Turnout 1 Refurbishment — Completed
Project Description
The project replaced the piping and specialty equipment at Turnout 1, including the following improvements:
- Upgrade to internal piping, flow meters and control valves
- Installation of a pressure-regulating valve
- Vault repairs and the addition of a flushing and sampling hydrant, ensuring the long-term reliability of the turnout and system
In 2014, Turnout 1 was found to be redundant with Wells 5 and 6 and Turnout 2 meeting the demands in the local area. The turnout was taken out of service in 2014 after flooding from an unknown water leak that damaged the below-grade equipment.
With the presence of PFAS in portions of the aquifer that the City wells draw from, the City restricted the use of its wells and purchased additional water from Zone 7 at the existing turnouts to meet summer demands in 2023. The City’s water distribution system is designed to incorporate the locations of both the turnouts and City wells to maintain balanced system pressure. Changes to the volume of water entering the system through different turnouts and wells can cause pressure variations within the system. In 2023, the Water Supply Alternatives Study found that it was critical for Turnout 1 to be placed back into service to rebalance the water system pressure. Temporary improvements and repairs to the broken line were completed by the City and Zone 7 in spring 2023 and the turnout was put back in service.
Location
Anticipated Timeline
More Information
Read more about the project in the January 16, 2024, City Council Agenda Report.
Funding Sources
The total project cost (Bernal Water Line and Turnout 1) was anticipated to be $2,205,420, covering design, contingencies, consulting, testing services, and City-supplied materials. On August 15, 2023, the City Council approved transferring $133,000 from the Annual Water Main Replacement for design services. The remaining costs were funded from the Water Operating and Maintenance Fund 420 reserve. The reserve balance will be replenished through a loan, in which the loan’s debt service is covered by the water rate increases.
Project 1
Turnout 4 Replacement and Booster Station
Project Description
- A new booster station will be installed to boost water pressure using electric pumps. It will include upgraded internal piping, flow meters and control valves, a pressure-regulating valve, vault repairs, and a flushing and sampling hydrant that will ensure the long-term reliability of the turnout and system. The booster station will be prefabricated off-site and placed at the location using a crane to minimize on-site construction and reduce disruption.
Location
Anticipated Timeline
More Information
Read more about the project in the March 19, 2024, City Council Agenda Report.
Stoneridge Drive 24-Inch Potable Water Main
Project Description
The work includes the installation of approximately 3,200 linear feet of 24-inch fusible PVC water main pipe and 450 linear feet of ductile iron pipe with diameters ranging from 18 to 24 inches.
Location
Anticipated Timeline
More Information
Read more about the project in the March 19, 2024, City Council Agenda Report.
Sunol Boulevard 20-Inch Water Main
Project Description
This project aims to increase the water capacity along Sunol Blvd. by:
- Installing 4,500 linear feet of new 20-inch water main to replace the aging 12-inch cast iron pipe
Upgrading to a 20-inch pipe will not only replace the 12-inch line but also increase overall system capacity, offering cost savings of around $300 per linear foot compared to installing both an 18-inch and a replacement 12-inch line.
Location
Anticipated Timeline
More Information
Read more about the project in the March 19, 2024, City Council Agenda Report.
Funding Sources
Initially, $986,487 was budgeted for the design phase across two projects: the Sunol Boulevard 20-Inch Water Main (CIP No. 24173) and the Turnout 4 Replacement and Booster Station with Stoneridge Drive 24-Inch Potable Water Main (CIP No. 24171). During the March 19 City Council meeting, the Pleasanton City Council approved combining these improvement projects to create the Near-Term Water Improvements Project (CIP No. 24171).
The total cost of the two projects is expected to be $10,641,025, including a contingency of $1.28 million for unforeseen construction costs. To cover the remaining expenses, the City will be reimbursed later through bond proceeds. Approximately $5 million will be funded by the Water Operating Fund (Fund 420) to be reimbursed once the bond proceeds are available. An additional $100,000 for cathodic protection work will be reimbursed by Zone 7.