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| Dublin San Ramon Services District continually upgrades and maintains local infrastructure for water, sewer, and recycled water services. Since 1996, the District has invested an average of $10 million annually in capital improvements. Projects are funded primarily by rate-payers and developer fees, but also by utility partners and grants from other government agencies. Please contact us for more information on any of the upcoming and recent projects listed below. |
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Contractors: To bid on a project, please return to our home page and click on Open Bids/Bid Results. |
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DSRSD is designing a fourth and final anaerobic digester for its Regional Wastewater Treatment Facility in Pleasanton. Construction of the one-million-gallon digester could begin as early as late 2010, depending on the availability of funds. Estimated to cost $7.2 million, this digester will provide redundancy in the processing of biosolids, expand capacity for average dry weather wastewater flow greater than 12.8 million gallons per day, improve treatment, and reduce the risk of digester upset and associated odors. |
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DSRSD is upgrading its 20-year-old Dissolved Air Flotation Thickener (DAFT), a device that thickens sewage sludge after primary treatment and prior to anaerobic digestion. Phase 1 of this $1.5 million project, completed in the fall of 2009, improved the Gravity Belt Thickener, a backup system that is used when the DAFT is taken off line for maintenance. Phase 2, which will rehabilitate the DAFT, is expected to begin by June 2010.
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DSRSD is working in coordination with PG&E and the City of Pleasanton to remove overhead power lines that run along the east side of the wastewater treatment plant and place them underground. Buried lines are safer and will enable DSRSD to install landscaping that shields views of the plant from Val Vista Park. Some of the existing power poles are leaning due to past construction activity and would need to be repaired at DSRSD’s cost if the lines were not buried.
At the same time, the District will modernize its cogeneration system, which is connected to the PG&E grid through these power lines. Cogeneration generates electricity from gases produced during wastewater treatment. It reduces the amount of power the District must purchase from PG&E, minimizes peak demand charges, and provides electricity to keep the plant operating during power failures. The power line project is expected to begin in late 2010.
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DSRSD reconstructed walkways and parking areas at its administrative office on Dublin Boulevard to comply with the Americans with Disabilities Act and City of Dublin requirements. The project also repaired landscaping and irrigation systems and relocated the District Office sign to help drivers get a better view of oncoming traffic from the west driveway. The project cost $180,000. |
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DSRSD recently installed a band screen at its Regional Wastewater Treatment Facility to prevent tiny pieces of plastic from clogging sand filters used during recycled water production, as well as irrigation meters and sprinkler heads in the recycled water distribution system. Plastic debris in wastewater comes from many sources, including plastic bags and produce stickers. Construction cost totaled $342,000.
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A new $12.4 million complex at the Regional Wastewater Treatment Facility now houses the District’s maintenance, safety, and electrical instrumentation divisions. The two buildings, totaling 20,000 square feet, are named in honor of former Director Thomas W. Ford. The complex was completed in October 2009. It includes a "clean room" for repairing electronic instruments, a shop equipped with a 5-ton overhead crane for handling pumps and other large equipment, and a paint booth. The larger building is heated and cooled by on-site cogeneration using digester gas, a renewable fuel produced during the wastewater treatment process. Photovoltaic roof panels also will generate electricity for use at the plant.
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The District recently renovated six pump stations in western Dublin, some of which were operating with original equipment from the 1970s, to ensure reliable water service. The $1.7 million project was completed in July 2009. |
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In a small but important project, the District converted 20 construction meters so they can be connected to purple recycled water hydrants instead of yellow potable water hydrants. Construction and dust control are appropriate uses for recycled water, and the District has 10 recycled water hydrants available to contractors. To minimize the possibility of cross connections between the separate potable and recycled water distribution systems, in March 2009 the District installed unique nozzles on the purple meters and hydrants. |
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In a small but important infrastructure and conservation project, the District converted 20 construction meters so they can be connected to purple recycled water hydrants instead of yellow potable water hydrants. Construction and dust control are appropriate uses for recycled water, and the District has 10 recycled water hydrants available to contractors. To minimize the possibility of cross connections between the separate potable and recycled water distribution systems, in March 2009 the District installed unique nozzles on the purple meters and hydrants.
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