Sobrante Water Treatment Plant Reliability Improvements Project


SCH Number
Lead Agency
East Bay Municipal Utility District (EBMUD)
Document Title
Sobrante Water Treatment Plant Reliability Improvements Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Open Space, Public/Semi-Public; Primary Zoning: General Agriculture (A-2), Open Space
Document Description
The Sobrante Water Treatment Plant (SOWTP) primarily serves customers in El Sobrante, Richmond, Pinole, Hercules, Rodeo, Crockett, and San Pablo. The purpose of the SOWTP Reliability Improvements Project is to increase the treatment capacity of the SOWTP to reliably meet future demand, treat additional Folsom South Canal Connection water during droughts, reduce disinfection by-products, and improve treatment processes. The Project includes construction of new facilities and would be divided into a Phase 1 and Phase 2 sequencing, to meet near-term and long-term demand, respectively. Phase 1 improvements would increase SOWTP capacity to 60 million gallons per day (MGD), and Phase 2 improvements would increase capacity further to 80 MGD. The Project also included demolition of the existing wash water settling basins, reclaim pumping plant, solids pumping plant, solids detention basins, and related vaults, mechanical, and electrical equipment, after completion of Phase 1.

Contact Information

Stella Tan
Agency Name
Job Title
Associate Civil Engineer
Contact Types
Lead/Public Agency / Project Applicant


Richmond, San Pablo
Contra Costa
Citywide, Countywide, Northern California, San Francisco Bay Area
Cross Streets
Amend Road/Valley View Road
Total Acres
Parcel #
433220003, 433220019, 433170024, 433210034, etc
State Highways
I-80 & SR-24
Olinda Elementary, De Anza High, etc
San Pablo Creek & San Pablo Reservoir
2 & 3
Other Location Info
Water Treatment Plant: El Sobrante Pipeline: El Sobrante, San Pablo, Richmond, Rollingwood

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Delta Protection Commission, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 4, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Transportation, District 4 (DOT), Department of Toxic Substances Control
State Reviewing Agency Comments
California Department of Transportation, District 4 (DOT), Department of Toxic Substances Control
Development Types
Water Facilities (Water Facility )(Type Wtr Trtmt Plant, MGD 80)
Local Actions
General Plan Update
Project Issues
Aesthetics, Air Quality, Biological Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Recreation, Schools/Universities, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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