Zone A to Rattlesnake Reservoir Pump Station Project


SCH Number
Lead Agency
Irvine Ranch Water District
Document Title
Zone A to Rattlesnake Reservoir Pump Station Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
The Rattlesnake Complex is currently zoned 6.1/Institutional with a land use designation of Public Facilities.
Document Description
IRWD proposes to replace the existing Rattlesnake Reservoir Pump Station No. 2 (RRPS2) with a new Zone A to Rattlesnake Reservoir Pump Station (ZARRPS) at the Rattlesnake Reservoir Complex. The proposed project includes demolition and replacement of the existing RRPS2 with the ZARRPS equipped with all electric motor-driven pumps to meet current capacity demand and future Michelson Water Recycling Plant (MWRP) production including all associated pipelines and appurtenances; demolition of the Northwood Zone A to B pump station; demolition of the existing septic system and extension of the existing sewer piping to connect to the existing caretaker's house, the park bathroom sewer lateral, and a new bathroom to be located within the existing chlorination facility to the existing sewer system near the site; demolition and removal of above and below-grade abandoned facilities within the Complex; demolition and replacement of the existing dechlorination storage and feed equipment; construction of a new filtration system intended for increased algae control, demolition and removal of the existing Hell an strainers, demolition and removal of the existing Rattlesnake Reservoir return pump station, construction of the new Rattlesnake Reservoir return pump station, construction of new automatic filters and backwash pumps in an enclosed building, piping improvements and appurtenances, and electrical improvements; installation of a permanent standby power generator; new site electrical service and undergrounding of a portion of the overhead electrical and communication cables; replacement and/or upgrades to the Complex's communications equipment; improvements to the site entry road and general site facilities, including pavement, curb and gutter, and drainage facilities.

Contact Information

Jo Ann Corey
Agency Name
Irvine Ranch Water District
Contact Types
Lead/Public Agency

Agency Name
Irvine Ranch Water District
Contact Types
Project Applicant


Cross Streets
Portola Parkway and Orchard Hills
Total Acres
State Highways
John Wayne Airport
Northwood High School
Irvine Lake
El Toro

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 12 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Energy Commission, California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), State Water Resources Control Board, Division of Drinking Water, California Department of Water Resources (DWR)
State Reviewing Agency Comments
California Department of Water Resources (DWR)
Development Types
Water Facilities (Type Pump Station, MGD 32.4)
Local Actions
Site Plan
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire


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.

Download CSV Download All Attachments New Search Print