Experience > Water and Wastewater

Sacramento Regional Wastewater Treatment Plant 2020 Master Plan EIR, Sacramento County* Sacramento Regional County Sanitation District/ County of Sacramento, Department of Environmental Review and Assessment
Role: Principal-in-Charge/Strategic Direction/Project Management/Technical Input The County’s wastewater treatment plant is largest discharger of treated wastewater to inland waterways in California. The EIR evaluated increasing discharge from 154 million gallons per day (mgd) to a permitted 218 mgd by 2020. Extensive modeling was conducted to determine the effect of treated wastewater on downstream water users, fisheries, and the overall Sacramento/San Joaquin Delta. Extensive consultation was conducted with the Regional Water Quality Control Board, as well as with NOAA Fisheries and the California Department of Fish and Game.

Zone 40 Water Supply Master Plan EIR, Sacramento County*
County of Sacramento, Department of Environmental Review and Assessment
Role: Principal-in-Charge/Strategic Input/Project Management/Technical Input The project involved the implementation of a conjunctive use water supply program for Zone 40, a water rate zone of the Sacramento County Water Agency, located in the unincorporated portion of Sacramento County. Under the program, surface water would be diverted from the Sacramento River in amounts consistent with those identified in the Water Forum Proposal, the construction of a network of conveyance pipelines, and construction of groundwater extraction and treatment facilities throughout the Zone 40 area. SCWA would implement this program to fulfill its requirement to deliver a safe and reliable water source to its customers. Key environmental issues included water quality, water supply, fisheries, vegetation and wildlife, and growth inducing impacts.

City of Healdsburg Wastewater Treatment Plant EIR, Napa County*
City of Healdsburg
Role: Principal-in-Charge/Strategic Input/Technical Input The City’s wastewater treatment plant disposed its treated waste into a former mining pit adjacent to the Russian River. The US Army Corps of Engineers asserted that the pit was hydrologically connected to the Russian River, and this resulted in the need for an NPDES permit for the treatment plant. The plant was upgraded to tertiary treatment levels, and a network of distribution lines was proposed for reuse. Key issued included water quality, aesthetics, human health, and growth.

UC Davis Wastewater Treatment Plant Upgrade EIR, Yolo County*
University of California, Davis Role: Principal-in-Charge/Strategic Input/Technical Input The Campus wastewater treatment plant required upgrade to treat more wastewater associated with growth on campus, and to meet more stringent water quality permit requirements. Issues associated with upgrade and treatment to tertiary levels included human health, water quality, fisheries in Putah Creek, vector control, and growth inducement.