Robert B. Diemer Water Treatment Plant Upgrades Project

3 Documents in Project


SCH Number
Lead Agency
Metropolitan Water District of Southern California
Document Title
Robert B. Diemer Water Treatment Plant Upgrades Project
Document Type
EIR - Draft EIR
Present Land Use
Public Facility

Document Description
The Metropolitan Water District of Southern CA. will be the Lead Agency for the preparation of an EIR to assess the environmental effects of four project components at the Robert B Diemer Water Treatment Plant. They include: seismic upgrades of the northwest fill slope, construction of a utility corridor, and modifications to the Washwater Reclamation Plant; seismic upgrades to the northern fill slope located north of Basin No. 4; construction of a new underground pressure control structure on the Lower Feeder pipeline within the plant boundaries; and construction of a new conveyance and distribution maintenance facility on site to replace the facility previously demolished for construction of the new ozone facility.

Contact Information
Sean Carlson
Metropolitan Water District of Southern California
Lead/Public Agency
P.O. Box 54153
Los Angeles, CA 90054-0153

Phone : (213) 217-6276


33°54'44.4"N 117°49'12.7"W
Yorba Linda
Cross Streets
Valley View Avenue and Diemer Road
Total Acres
State Highways
SR-142, 57, 90

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Seismic & equip. upgrades, new PCS & C&D building)
Project Issues
Agriculture and Forestry Resources Air Quality Biological Resources Cultural Resources Cumulative Effects Geology/Soils Hydrology/Water Quality Noise Transportation Vegetation
Reviewing Agencies
California Air Resources Board (ARB) California Department of Fish and Wildlife, South Coast Region 5 (CDFW) California Department of Parks and Recreation California Native American Heritage Commission (NAHC) California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB) Department of Toxic Substances Control Department of Water Resources Office of Emergency Services, California Office of Historic Preservation Resources Agency Resources, Recycling and Recovery State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Water Quality California Department of Transportation, District 12 (DOT)

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, 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.

Download CSV New Search Print