Syphon Reservoir Interim Facilities Project

2 Documents in Project


SCH Number
Lead Agency
Irvine Ranch Water District
Document Title
Syphon Reservoir Interim Facilities Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use

Document Description
The IRWD is proposing the construction of interim facilities at the base of the Syphon Reservoir to allow IRWD to operate the reservoir for recycled water use. The proposed facilities include a covered and fenced concrete approximately 3,600-sf pad housing chlorination equipment, bulk hypochlorite storage, and metering pumps; mechanical strainers; a backwash water supply pump and lift station; air compressor and piping for the temporary reservoir aeration system; and backwash force main and drainage facilities to connect to a new 48-inch storm drain pipe. Other proposed facilities are an electrical line and transformer, an approximately 15-foot-wide gravel access road, a domestic water pipeline, emergency drain, recycled water line and storm drain.

Contact Information
Jo Ann Corey
Irvine Ranch Water District
15600 Sand Canyon Avenue
Irvine, CA 92618

Phone : (949) 453-5326


33°42'38"N 117°43'52"W
Cross Streets
Sand Canyon Avenue and Portola Parkway
Total Acres
State Highways
Stonegate Elementary
Syphon Reservoir

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Recycling Type)
Local Action
Other Action Other Action: Water facilities
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Department of Parks and Recreation California Department of Public Health California Energy Commission California Highway Patrol Caltrans, District 12 Department of Fish and Wildlife, Region 5 Department of Water Resources Office of Historic Preservation Regional Water Quality Control Board, Region 8 Resources Agency Resources, Recycling and Recovery State Lands Commission State Water Resources Control Board, Divison of Financial Assistance Native American Heritage Commission

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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