Walnut Creek Water Treatment Plant Pretreatment Project

3 Documents in Project


SCH Number
Lead Agency
East Bay Municipal Utility District (EBMUD)
Document Title
Walnut Creek Water Treatment Plant Pretreatment Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
The Walnut Creek WTP is the primary water treatment plant serving approximately 500,000 customers in EBMUD’s east-of-hills service area, which includes portions of Pleasant Hill, portions of Walnut Creek, Alamo, Lafayette, Danville, Blackhawk, and San Ramon Valley. The Walnut Creek WTP primarily treats Mokelumne River water stored in the Sierra foothills at Pardee Reservoir, but also treats water stored locally in Briones Reservoir.
Document Description
The proposed Project would add pretreatment facilities to the Walnut Creek WTP that would allow EBMUD to more reliably treat lower quality untreated water resulting from high rainfall runoff, wildfires, future droughts, algae blooms, climate change and emerging contaminants. The proposed Project would also improve treated water taste and odor and eliminate treatment process limitations that prevent the Walnut Creek WTP from being able to sustain its planned capacity of 160 million gallons per day (MGD).

Contact Information

Tom Boardman
Agency Name
East Bay Municipal Utility District
Job Title
Associate Civil Engineer
Contact Types
Lead/Public Agency


Walnut Creek
Contra Costa
Citywide, Northern California, San Francisco Bay Area
Cross Streets
Larkey Lane/Alfred Ave in Walnut Creek, Mt. Diablo Blvd/El Nido Ranch Rd in Lafayette
Total Acres
50 WC/ 14 LAF
Parcel #
175-220-016 WC & 252-060-005 Lafayette
State Highways
680 & 24
Grayson Creek & Lafayette Creek
Other Location Info
other zip code: 94549
Other Information
coordinates: 37.913, -122.0841; 37.8887, -122.1383

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 Transportation, District 4 (DOT), California Department of Water Resources (DWR), California Energy Commission, California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Native American Heritage Commission (NAHC)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC)
Development Types
Water Facilities (Add pretreatment facilities; Improve water)(Type Water Trmt Plnt, MGD 160)
Local Actions
General Plan Update
Project Issues
Aesthetics, Air Quality, Biological Resources, Cumulative Effects, Drainage/Absorption, Geology/Soils, Hazards & Hazardous Materials, Noise, Recreation, Schools/Universities, Transportation, Utilities/Service Systems, Vegetation, Wetland/Riparian
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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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