Listed below are projects that have been completed in the past few years. View current projects in progress.
Sonoma Valley County Sanitation District Sewer Trunk Main Replacement Phase 4c
The Work consists of construction of Owner's sewer trunk main replacement from the upper end of the Agua Caliente Creek Crossing project to manhole M90-3 on Happy Lane in the unincorporated area of Boyes Hot Springs, California. The Work includes replacement of approximately 2,100 linear feet of 21-inch diameter trunk sewer main with the installation of 27-inch diameter trunk sewer main, replacement of 6-inch side sewer main with 8-inch diameter side sewer main, trenchless installation of 42-inch diameter steel casing, associated manholes, and re-connection of existing connecting sewer lines.
Date Started: April, 2022
Contract Amount: $2,933,963
Contractor: TerraCon Constructors, Inc., Healdsburg, CA
Dry Creek Ecosystem Restoration Project – Phase IV Site 13B Inlet
The Work consists of construction of habitat modifications along a 100 foot side channel inlet of dry creek, and a riffle and boulder field in the main channel of Dry Creek, located at 8761 Dry Creek Road in Healdsburg, California. The Work includes excavation of a side channel into a floodplain area of Dry Creek and installation of habitat and stabilization structures composed of logs and boulders, driving logs into the ground to stabilize log structures, stabilization of banks, planting and replanting riparian vegetation and trees, removal of non-native riparian vegetation, construction of in-channel features such as boulder fields and riffles, dewatering during construction, and isolation of work areas from the creek.
Date Started: June, 2023
Contract Amount: $260,621
Contractor: Rege Construction, Inc., Cloverdale, CA
PVGSA, SVGSA, and SRPGSA Deep Multi-Level Monitoring Wells
Date Started: April, 2022
Contract Amount: $1,177,807
Contractor: Roadrunner Drilling & Pump Company, Woodland, CA
Description: The Work consists of construction of six nested groundwater monitoring wells located in the cities of Petaluma, Cotati, and Santa Rosa; the Town of Windsor; and unincorporated Sonoma County. The Work includes the drilling, construction, and development of nested groundwater monitoring wells, each with two to three depth-specific screened intervals.
Petaluma Aqueduct Rehabilitation At Smart Crossing
The Work consists of rehabilitation of a portion of Owner’s Petaluma aqueduct at the SMART train crossing in Santa Rosa California. The Work includes excavation, shoring and installation of two temporary line stops; excavation, shoring and installation of two 24-inch diameter isolation valves; temporary removal and replacement of two 24-inch AWWA C200 welded steel pipe 45-degree ells; repair of the aqueduct; backfill; and surface restoration.
Date Started: August, 2022
Contract Amount: $730,631
Contractor: TerraCon Constructors, Inc. Healdsburg, CA
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Penngrove Lift Station Flood Resiliency
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.
Russian River-Cotati Intertie Pipeline Seismic Hazard Mitigation at the Mark West Creek Crossing
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.
Russian River County Sanitation District Treatment Plant Seismic Retrofit of Secondary Clarifiers
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.
Sonoma Booster Station Electrical Upgrade And Pumping Reliability
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.
Russian River Crossing Project: Russian River - Cotati Intertie Pipeline Seismic Hazard Mitigation
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.
Sonoma Valley County Sanitation District Sewer Trunk Main Replacement 4A and 4B1
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.
Sonoma Valley County Sanitation District Equalization Basins 1,2,3 and 4 Geomembrane Relining
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.
South Park County Sanitation District East Robles Avenue Sewer Replacement
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.
Dry Creek Habitat Enhancement Phase III Part 3
Date Started: 7/15/2020
Contract Amount: $3.7M
Contractor: Hanford Applied Restoration & Conservation, Petaluma, CA
Description: The Work includes excavation of backwater alcoves and side channels into the floodplain areas of Dry Creek, installation of habitat and stabilization structures composed of logs and boulders, driving logs into the ground to stabilize log structures, stabilization of banks, planting and replanting riparian vegetation and trees, removal of non-native riparian vegetation, construction of in-channel features such as boulder fields and riffles, dewatering during construction, isolation of Work areas from the creek, construction of driveway access from West Dry Creek Road, and replacement of storm drain pipe.
Mirabel Inflatable Dam Fabric Replacement
Date Started: 5/24/2021
Contract Amount: $1.8M
Contractor: Power Engineering Construction Company, Alameda, CA
Description: The Work consists of rubber dam fabric replacement at Owner’s Mirabel Inflatable Dam located at 10290 Westside Road, near the unincorporated town of Forestville, Sonoma County, California. The Work includes the removal of the existing rubber dam fabric and installation of approximately 180 lineal feet of Owner-furnished replacement rubber dam fabric. The Work also includes construction of a coffer dam upriver and downriver, in conjunction with a dewatering system, to facilitate the removal of river channel material, construction of vegetated rock slope stabilization, and installation of the rubber dam fabric.
Santa Rosa Creek Vortex Tube
Date Started: 6/21/2021
Contract Amount: $1.1M
Contractor: Granite Construction Company, Ukiah, CA
Description: The Work consists of rehabilitation of Owner’s vortex tube located at the Santa Rosa Creek diversion structure beneath Montgomery Drive, Santa Rosa, California. The Work includes rehabilitation of approximately 112 linear feet of 8-foot diameter reinforced concrete pipe (vortex tube), replacement of approximately 21 linear feet of cast-in-place concrete transitional section (transition area), trenchless installation of approximately 140 linear feet of 36-inch diameter welded steel bypass pipe (bypass pipe), and approximately 160 linear feet of unlined trapezoidal channel to facilitate future inspection and maintenance.
Dry Creek Habitat Enhancement Phase II Part 2
Date Started: August, 2018
Contract Amount: $3.5M
Contractor: McCullough Construction, Inc., Arcata, CA
Description: The Dry Creek Enhancement Project will construct low velocity habitat areas for juvenile Coho and Steelhead. This portion of the project consists of work in Reach 14. The work includes construction of side channels, riffles, backwaters and alcoves which will slow the speed of the water and create refuge for young fish. The improvements are constructed in the floodplain areas of Dry Creek and include installation of habitat and stabilization structures are composed of logs and boulders, driving logs into the ground anchor structures, bank stabilization measures, planting of riparian vegetation and trees, removal of nuisance non-native riparian vegetation and construction of in-channel features such as boulder fields and riffles, dewatering during construction, and isolation of Work areas from the creek.
Forestville Tanks Recoat
Date Started: August, 2019
Contract Amount: $1M
Contractor: Olympus & Associates, Inc. in Reno, NV.
Description: The Work consists of removal and replacement of protective coatings on two above-grade welded steel potable water storage tanks located in an unincorporated area of Forestville, California. The Work includes the removal of internal epoxy coating, removal of loose exterior paint, recoating of the interior and exterior of the tanks, removal of existing cathodic protection system, installation of a new cathodic protection system, replacement of air vents, drain pipe replacement, overflow pipe modifications, cabinet removal, roof penetration repair, and the addition of an occupancy sensor.
North Bay Water Reuse Program- Sonoma Valley County Sanitation District Treatment Plant - Pumping and Piping Upgrade
Date Started: November, 2016
Date Completed: August, 2018
Final Contract Amount: $2M
Contractor: TerraCon Constructors, Inc., Healdsburg, CA
Description: The Work consists of upgrades at the Sonoma Valley County Sanitation District Wastewater Treatment Plant outside the limits of the City of Sonoma. The Work includes construction of approximately 3,000 linear feet of pipeline ranging from 12 to 18 inches in diameter, the addition of two vertical turbine pumps and one 1,980 gallon hydropneumatic bladder tank. Sitework also includes piping, vaults, electrical and instrumentation.
SPCSD Blackwell Tract Sewer System Replacement
Date Started: March, 2018
Date Completed: January, 2019
Final Contract Amount: $3.1M
Contractor: TerraCon Constructors, Healdsburg, CA
Description: The Work consists of construction of Owner’s South Park County Sanitation District Blackwell Tract Sewer System and Santa Catalina Way Water System Replacement Project located at Elsinore Way, Santa Barbara Drive, Santa Catalina Way, San Clemente Drive, San Domingo Drive, and portions of Moraga Drive in an unincorporated area of Santa Rosa. The Work includes the replacement of approximately 5,736-feet of 6-inch and 8-inch diameter vitrified clay and asbestos cement sewer pipe with new 8-inch diameter PVC sewer pipe, laterals and manholes. The Work also includes replacement of approximately 565 feet of existing 4-inch diameter cast iron water main with a new 8-inch diameter PVC water main, and the installation of 6 new fire hydrants.
Petaluma Aqueduct Cathodic Protection Upgrade
Date Started: April, 2018
Date Completed: December, 2018
Final Contract Amount: $1.3M
Contractor: American Construction and Supply, Inc., Corte Madera, CA
Description: The Petaluma Aqueduct Cathodic Protection (CP) Project installed an impressed current cathodic protection system along the length of the Petaluma Aqueduct, which runs from Santa Rosa to Petaluma. An impressed current cathodic protection system prevents corrosion to the metal portions of the pipeline and may extend the life of the pipeline by up to 50 years. The Work includes the installation of seven cathodic protection stations each consisting of a DC rectifier unit and deep well anode bed with cast iron anodes. In addition, there are thirteen test stations that will be placed along the Aqueduct which will measure effectiveness of the CP system.
Dry Creek Habitat Enhancement Phase II, Part 1
Date Started: June, 2016
Date Completed: October, 2018
Final Contract Amount: $3,696,566
Contractor: McCullough Construction, Inc., Arcata, CA
Description: The Work consisted of construction of habitat modifications within the Dry Creek Valley. The Work includes excavating backwater alcoves and side channels into the floodplain areas of Dry Creek and installation of stabilization structures composed of logs and boulders. The banks were stabilized, riparian vegetation and trees were replanted and non-native vegetation was removed. In-channel features include boulder fields and riffles which create a thriving environment for the fish of the Russian River.
Dry Creek Habitat Enhancement Phase III, Part 1
Date Started: August, 2016
Date Completed: October, 2018
Final Contract Amount: $2,214,135
Contractor: McCullough Construction Inc., Arcata, CA
Description: The Work consisted of habitat modifications with the Dry Creek Valley along .75 miles of Dry Creek outside the City of Healdsburg. Work includes excavating backwater alcoves and side channels into the floodplain areas of Dry Creek. We installed habitat and stabilization structures composed of anchored logs and boulders and erosion control measures by seeding and planting of live stems and removal of non-native riparian vegetation. These features create a thriving environment for the fish of the Russian River.
Geyserville Sanitation Zone Treatment Plant Photovoltaic Project
Date Started: September, 2015
Date Completed: November, 2015
Final Contract Amount: $145,000
Contractor: Danlin Solar, San Rafael, CA
Description: The Work consists of construction of a 150 solar panel array which will produce 46 kW. This is enough energy to provide 80% of the electricity needed to operate the Wastewater Treatment Plant. This project is part of the Sonoma Water's initiative to develop a model for locally owned, cost effective renewable energy.
North Bay Water Reuse Program - SVCSD Fifth Street East Recycled Water Pipeline Project
Date Started: July, 2016
Date Completed: June, 2017
Final Contract Amount: $2,033,135
Contractor: Argonaut Constructors, Santa Rosa, CA
Description: The Work consists of approximately 8,000 linear feet of recycled water mainline pipe, valves, appurtenances and service laterals. The pipeline begins at the intersection of Watmaugh Road and Shainsky and extends east to Fifth Street. The project also includes extension of the pipeline to the City of Sonoma's Valley Oaks Park.
Isolation Valves Seismic Hazard Mitigation
Date Started: August, 2016
Date Completed: December, 2017
Final Contract Amount: $4,507,588
Contractor: Ranger Pipelines, Inc., San Francisco, CA
Description: The Work consists of the installation of 14 intermediate butterfly isolation valves throughout Sonoma Water's 90 miles of water transmission pipeline outside and within the city limits of Cotati, Petaluma, Rohnert Park, Santa Rosa and Sonoma. The Work includes appurtenances such as air valves, valve boxes, cathodic protection, temporary line stop technology and thrust restraint.
Mirabel Fish Screen and Fish Ladder Replacement
Date Started: July, 2014
Date Completed: February, 2017
Final Contract Amount: $12,721,338
Contractor: F&H Construction, Lodi, CA
Description: The Work consisted of construction of a vertical slot fish ladder, fish screen with 6 intake bays and viewing gallery with 400 square feet of viewing windows. Work included a temporary dam and rock fish passage upstream of the Wohler Bridge, pipe pile foundation system, fish screen cleaning system with a vertical traveling brush and controller. Sonoma Water staff utilizes video cameras to count the fish moving through the ladder and we bring over 3,000 students per year to the viewing gallery as part of the Water Education Program.
Westside Water Education Center
Date Started: October, 2014
Date Completed: July, 2016
Final Contract Amount: $2,108,766
Contractor: Diede Construction, Inc., Lodi, CA
Description: The Work consisted of construction of a water education building at 9703 Wohler Road and also included a new driveway entrance and parking area. This facility is the field study site for Sonoma Water's Water Education Program. Over 3,000 students visit the center each school year and learn about the connection between our drinking water and the Russian River, water quality parameters for endangered Russian River salmon and utilize the laboratory to discover the importance of water efficiency and aquatic life.
Sonoma Valley County Sanitation District Agua Caliente Creek Crossing
Date Started: August, 2015
Date Completed: June, 2016
Final Contract Amount: $2,623,203
Contractor: TerraCon Constructors, Inc., Healdsburg, CA
Description: The Work consisted of replacing 620 linear feet of sewer trunk main, including removal and realignment of trunk main and removal of the above channel crossing of Agua Caliente Creek. Work also included construction of 639 linear feet of HDPE pipe, 239 linear feet of siphon pipe and 133 linear feet of pipe rammed steel casing under Agua Caliente Creek.
Procurement of Large Woody Debris
Date Started: February, 2016
Date Completed: August, 2016
Final Contract Amount: $885,694
Description: Sonoma Water purchased over 1,000 large woody debris units to be used in the Dry Creek habitat enhancement projects. Species include Redwood, Douglas Fir and Eucalyptus. These logs and root wads will be used to create habitats that reduce water velocities for Coho salmon rearing in Dry Creek. The Project is one component of the National Marine Fisheries Service's Russian River Biological Opinion, which is a federally mandated blueprint to help save endangered fish and preserve Sonoma Water's regional water supply.
SPCSD West Robles Avenue Collection System Replacement Project
Date Started: May, 2016
Date Completed: July, 2016
Final Contract Amount: $292,160
Contractor: W.R. Forde Associates, Richmond, CA
Description: The Work consists of construction of approximately 440 feet of sanitary sewer main in West Robles Avenue. The Work includes the excavation, backfilling and surface restoration for the construction of the sewer main. This includes several manholes, laterals and modifications to existing manholes. Sonoma Water worked in conjunction with residents on West Robles Avenue to complete this Work quickly and mitigate disruptions.
404 Aviation Boulevard Roof Replacement Project
Date Started: June, 2015
Date Completed: September, 2015
Final Contract Amount: $1,053,715
Contractor: Joseph Murphy Construction, Livermore, CA
Description: The Work consisted of roof replacement of a 63,000 square foot, actively occupied office bu8ilding in Santa Rosa. The Work included the removal and replacement of existing roof and removal and reinstallation of existing photovoltaic panels.
Service Center Parking Lot, Phase II
Date Started: October, 2015
Date Completed: June, 2016
Final Contract Amount: $275,632
Contractor: Siri Grading and Paving, Inc., Santa Rosa, CA
Description: The Work consisted of construction of a parking lot at SCWA Service Center Facility. The Work included construction of a one-acre parking lot with lime treated subgrade, aggregate base wearing surface and lighting for Service Center staff.
Russian River County Sanitation District Treatment Plant Biological Nutrient Removal
Date Started: September, 2013
Date Completed: March, 2014
Final Contract Amount: $2,509,660
Contractor: Auburn Constructors, Inc., Sacramento, CA
Description: Construction of a biological nutrient removal system at Russian River County Sanitation District’s treatment plant located at 18400 Neeley Road, Guerneville, California. Work includes the construction of baffle walls, pumping recirculation, micro diffuser aeration, blowers, mixers, motor control center, electrical panels, instruments, and controls.
North Bay Water Re-Use Program - Sonoma Valley County Sanitation District
McGill Road Recycled Water Pipeline
Date Started: October, 2014
Date Completed: March, 2015
Final Contract Amount: $236,133
Contractor: TerraCon Constructors Inc., Healdsburg, CA
Description: The work consists of construction of a recycled water pipeline along McGill Road crossing Highway 12, outside the City of Sonoma. The Work includes installation of approximately 750 linear feet of recycled water pipe in a range of sizes with steel casing under Highway 12.
Dry Creek Habitat Enhancement Project, Phase II
Date Started: June, 2013
Date Completed: January, 2015
Final Contract Amount: $4,673,293
Contractor: Hanford Applied Restoration & Conservation, Sonoma, CA
Description: Construction of habitat modifications within the Dry Creek Valley along Dry Creek from approximately 1/2 mile upstream of Lambert Bridge Road to 1/2 mile downstream of Lambert Bridge Road near City of Healdsburg. Work included habitat modifications, including new side channels, ponds, alcoves and rock riffles. Enhancements were made to existing pools through selective grading, installation of woody debris, log jams and large boulders as anchor material. New vegetation was planted and erosion control measures were put in place to maintain longevity of the project.
Sonoma Valley County Sanitation District Biosolids Management Upgrade
Date Started: May, 2013
Date Completed: September, 2014
Final Contract Amount: $3,107,794
Contractor: KG Walters Construction Co., Inc., Santa Rosa, CA
Description: Upgrading the biosolids handling facility at the Sonoma Valley County Sanitation District Wastewater Treatment Plant located at 22675 8th Street East, Sonoma, California. Work includes the installation of a new screw press and construction of new equipment and load-out building. Work also includes removal of an existing belt press and conveyor, electrical, and preparation and painting of pump room in the existing dewatering building.
Mirabel Site Seismic Improvements
Date Started: December, 2013
Date Completed: August, 2014
Final Contract Amount: $1,493,600
Contractor: Hayward Baker, Inc., Santa Paula, CA
Description: Work includes clearing, grading, utility protection and relocation, soil densification through vibro replacement methods, and quality control testing.
South Park County Sanitation District Gloria Drive – Meekland Court Collection System Replacement and Gloria Drive & Valerie Way Water Main Replacement
Date Started: October, 2013
Date Completed: September, 2104
Final Contract Amount: $3,013,360
Contractor: Ghilotti Construction, Inc., Santa Rosa, CA
Description: Work includes replacing approximately 6,570 feet of existing 6-inch and 8-inch sewer main pipe and appurtenant sewer laterals, manholes, and main line cleanouts with new 8-inch PVC sewer main and appurtenant sewer laterals, manholes, and main line cleanouts; replacing approximately 2,078 feet of existing 4-inch water main and appurtenant water services with new 8-inch PVC water main and appurtenance water services; and the addition of two new fire hydrants. Sewer-related Work is located on portions of Gloria Drive, West Avenue, Camellia Court, Valerie Way, Metaxa Court, Southwood Drive, Leo Drive, Meekland Court, Dutton Avenue, and Mathwig Drive and is within existing public sewer easements. Water-related Work is located on portions of Gloria Drive and Valerie Way. All Work is located in an unincorporated area outside the city limits of Santa Rosa.
North Bay Water Reuse Program, Sonoma Valley County Sanitation District, Napa Salt Marsh Restoration Pipeline, (Carneros Reservoir to Huichica Unit)
Date Started: March, 2013
Date Completed: November, 2013
Final Contract Amount: $ 4,480,053
Contractor: Preston Pipelines, Inc., Milpitas, CA
Description of Work: Construction of a recycled water transmission pipeline in an unincorporated area of Sonoma and Napa Counties. The Work included the installation of approximately 18,200 lineal feet of 18- inch diameter recycled water transmission pipeline by means of direct bury, horizontal directional drilling or bore and jack; pipe appurtenances; and incidental related Work.
Santa Rosa Aqueduct Seismic Hazard Mitigation (Rodgers Creek Fault Crossing)
Date Started: December, 2012
Date Completed: October, 2013
Final Contract Amount: $3,305,336
Contractor: Ranger Pipelines, Inc. San Francisco, CA
Description of Work: Seismic hazard mitigation for the Owner’s Santa Rosa Aqueduct at the Rodgers Creek fault crossing, within the limits of the City of Santa Rosa, California, on Sonoma Avenue between intersections of Sotoyome and Doctors Park Drive. The Work included the installation of approximately 1,900 linear feet of 36-inch steel water pipe including related fittings and appurtenances, a new water meter turnout, a manifold system to allow for bypass flows, cathodic protection system, electrical service panel, conduits, and cables, and abandonment of existing meter vault and a portion of the existing aqueduct.
Service Center Relocation (2025 Aviation Boulevard)
Date Started: May, 2012
Date Completed: July, 2013
Final Contract Amount: $2,817,437
Contractor: Helmer & Sons, Inc., Angwin, CA
Description of Work: Construction of a new building and remodeling of an existing building to for Sonoma Water’s new Service Center at 2025 Aviation Boulevard, Santa Rosa, California. Work included the construction of a pre-engineered metal building, grading, paving, mechanical, electrical, and related work. In addition, Work included construction of a pond loop system involving the heating, ventilating, and air conditioning system in the new building, which was a specific component of the Renewable Energy Secure Communities project. The pond loop used the existing 100 million gallon recycled water storage pond as the heat dissipation source for heating and cooling of the new Service Center. The heating, ventilating, and air conditioning system in the new Service Center will circulate water in a closed loop through coils of plastic pipe installed at the bottom of the recycled water storage pond (pond loop). These coils of pipe will dissipate heat in the summer and absorb heat in the winter within the pond.
Airport-Larkfield-Wikiup Sanitation Zone Treatment Plant Emergency Gas Scrubber System
Date Started: January, 2011
Date Completed: August, 2013
Final Contract Amount: $236,176
Contractor: Arnold Construction Company, Fulton, CA
Description of Work: Installation of an emergency gas scrubber system at Sonoma Water’s wastewater treatment plant located at 2025 Aviation Boulevard, Santa Rosa, California. Work included providing a concrete pad, ventilation ducts, electrical power and controls, and the emergency gas scrubber unit.
Dry Creek Habitat Enhancement Demonstration Project, Phase I
Date Started: September, 2012
Date Completed: November, 2012
Final Contract Amount: $184,748
Contractor: BioEngineering Associates, Inc., Laytonville, CA
Description of Work: Construction of habitat modifications along Dry Creek at 4900 West Dry Creek Road near the City of Healdsburg, California. Work included habitat modification including new side channels, ponds, and alcoves, and rock weir riffles; enhancements to existing pools through selective grading, installation of woody debris, log jams, and large boulders as anchor material; vegetation planting; installation of erosion control measures; excavation; and dewatering.
Russian River County Sanitation District Disinfection Upgrade Project
Date Started: May, 2011
Date Completed: September, 2012
Final Contract Amount: $2,630,133
Contractor: Syblon Reid Contractors, Folsom, CA
Description of Work: Construction of a new ultraviolet light (UV) disinfection system at the Russian River County Sanitation District treatment plant located 18400 Neeley Road, Guerneville, California. Work included a low-pressure, high-output UV disinfection system in a 2-channel concrete basin; a coagulation and flocculation tank and chemical feed equipment; and piping, electrical and other modifications at the treatment plant.
North Bay Water Reuse Program - Sonoma Valley Effluent Reservoir R5 Project
Date Started: July, 2011
Date Completed: May, 2012
Final Contract Amount: $2,339,768
Contractor: Ford Construction Company, Inc., Lodi, CA
Description of Work: Recycled water storage reservoir to the North of the Sonoma Valley County Sanitation District Wastewater Treatment Plant (WWTP) located at 22675 8th Street East, Sonoma, California. The reservoir stores approximately 100 acre-feet of recycled water. Work included construction of a recycled water storage reservoir lined with a high-density polyethylene (HDPE) liner; inlet, outlet, overflow piping, concrete pumping station, and pump; 18-inch recycled water pipeline; and electrical and telemetry work to connect the reservoir into the WWTP and recycled water system.