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Date Started: 3/16/2021
Contract Amount: $819,369
Contractor: Valentine Corporation, San Rafael, CA
Description: The Work consists of modification of the existing Penngrove Lift Station such that the facility can continue to operate during a 500 year flood. Project is located at 25 Ely Road North, Petaluma, Ca 94954. The Work includes the construction of new electrical, instrumentation, permanent backup engine generator, and controls equipment for the duplex sewer pumping station outside the existing building on a new platform at elevations above the 500 year floodplain. Work includes demolition of the existing electrical, instrumentation, and controls equipment inside the facility. Existing pumps shall remain in place.
Date Started: 2/24/2021
Contract Amount: $7.3M
Contractor: Ranger Pipelines, Inc. San Francisco, CA
Description: The Work consists of seismic hazard mitigation of the Russian River Cotati Intertie Pipeline at the Mark West Creek Crossing located at 8150 River Road, Forestville, CA and 11000 Wohler Road in Healdsburg, CA. The Work includes the replacement of approximately 760 linear feet of 48-inch water transmission pipe with 0.5 thick butt-welded steel AWWA C200 water transmission pipeline and installation of butterfly valve, air valves and cathodic protection.
Date Started: 1/4/2021
Contract Amount: $1.3M
Contractor: Overaa & Company, Richmond, CA
Description: The Work consists of seismic retrofit of secondary clarifiers at Owner’s treatment plant, located at 18400 Neely Road, near the community of Guerneville, California. The Work includes replacing the existing internal secondary clarifier mechanisms in their entirety and modifying the reinforced concrete foundations, with the new system designed to withstand governing seismic and hydrodynamic sloshing loads.
Date Started: 11/1/2019
Contract Amount: $3.8M
Contractor: TerraCon Constructors, Inc. Healdsburg, CA
Description: The Work consists of the construction of Owner’s Sonoma Booster Station electrical upgrade and pumping reliability located at 5204 Montgomery Drive, Santa Rosa, CA. The Work includes two 250 horsepower vertical turbine pumps, a diesel generator with enclosure and a 1,200 cubic foot surge tank; replacement of an existing transformer; replacement of and modifications to switchgear; seismic reinforcement of an existing pump station building; an addition to an existing pump station building; and site improvements.
Date Started: April 2021
Contract Amount: $7.3M
Contractor: Mountain Cascade, Inc. , Livermore, CA
Description: Sonoma Water owns, operates, and maintains a 48-inch diameter steel water supply pipeline (referred to as the Russian River-Cotati Intertie) that crosses the southern and eastern aqueduct transmission lines and crosses the Russian River in Sonoma County. The pipeline is buried at a relatively shallow depth (approximately 7 feet below ground surface) across the Russian River channel and stream banks, and crosses seismically unstable terrain. The proposed project is needed to address seismic concerns related to reliable delivery of water to Sonoma Water’s service area and prevent the loss of an essential water service due to a moderate or severe earthquake along the Rodger's Creek/Hayward Fault.
Date Started: July, 2019
Contract Amount: $5,795,922
Contractor: Mountain Cascade, Inc. Livermore, CA
Description: The Work consists of construction of Owner’s sewer trunk main replacement phase 4A, 6th Street West to Ramon Street, within the city of Sonoma, and sewer trunk main replacement phase 4B.1, located in Maxwell Farms Regional Park near the ballfield. The Work includes replacement of approximately 4,300 feet of 27 inch diameter trunk sewer, associated manholes, and re-attachment of existing connecting sewer line.
Date Started: June, 2019
Contract Amount: $3,198,386
Contractor: TerraCon Constructors, Healdsburg, CA
Description: : The Work consists of the construction of Owner’s equalization basins 1, 2, 3, and 4 geomembrane relining located at the Sonoma Valley County Sanitation District’s wastewater treatment plant. The Work includes the relining of each basin with an impermeable layer of geomembrane liner, which anchors in a trench along the top of each basin; the installation of approximately 250 feet of 24-inch diameter pipe between basin 3 and basin 4; the installation of incidental piping, washdown monitors, and electrical conduit and appurtenances; and construction of a concrete drainage trench in equalization basin 1.
Montgomery Drive Storage Building at Sonoma Booster Station
Date Started: March, 2019
Contract Amount: $517,650
Contractor: R&C Construction, Middletown, CA
Description: The Work consists of construction of Owner’s Montgomery Drive Storage Building located at 5200 Montgomery Drive, Santa Rosa, California. The Work includes construction of a pre-engineered metal storage building, related site work and foundation and new PG&E connection.
Date Started: September, 2018
Contract Amount: $1,344,125
Contractor: Argonaut Constructors, Inc., Santa Rosa, CA
Description: The Work consists of construction of approximately 2,450 feet of 8-inch diameter sanitary sewer main located in East Robles Avenue, Brooks Avenue and Delores Lane outside the limits of the City of Santa Rosa, California. The Work includes excavation, backfilling, surface restoration for the construction of sanitary sewer main, including manholes, laterals, modifications of existing manhole and bore-and-jack under a box culvert. Work also includes removal or abandonment of existing sewer mains, manholes and appurtenances.