Sunnyvale Water Pollution Control Plant Primary Treatment Facility

8 Documents in Project


SCH Number
Lead Agency
City of Sunnyvale
Document Title
Sunnyvale Water Pollution Control Plant Primary Treatment Facility
Document Type
ADM - Addendum
Present Land Use
environmental services
Document Description
Note: Review Per Lead As part of the Master Plan process the city identified the need to replace the secondary treatment process to ensure continued reliable treatment and to help meet potential regulatory limits for nutrients (nitrogen and phosphorus). The Master Plan identified a conventional activated sludge (CAS) process, to be phased in over a number of years, to eventually replace all existing secondary treatment facilities (including the oxidation ponds, fixed growth reactors, and air flotation tanks). The city proposed to stage replacement of secondary treatment facilities by using a "Split Flow" configuration prior to full conversion to conventional activated sludge treatment. During the first stage, the city would build a smaller conventional activated sludge facility (than what would ultimately be needed to treat all flows through the plant) and continue to use the existing secondary treatment process to treat a portion of the flow, splitting the flow between the existing and new secondary treatment processes.

Contact Information

Jennifer Ng
Agency Name
City of Sunnyvale
Contact Types
Lead/Public Agency


Santa Clara
Cross Streets
Carl Road and Borregas Ave
Total Acres
Parcel #
110-03-023, 110-03-064
State Highways
237, 101
Santa Clara Light Rail
Moffett Airfield

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
Air Resources Board, Major Industrial Projects, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Caltrans, Division of Aeronautics, Department of Toxic Substances Control, Office of Emergency Services, California, Resources Agency, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 17
Development Types
Waste Treatment:Other (Tertiary MGD 29.5)
Local Actions
Site Plan
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Flood Plain/Flooding, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Transportation, GHG

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.

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