Syphon Reservoir Improvement Project
5 Documents in Project
Summary
SCH Number
2019080009
Lead Agency
Irvine Ranch Water District
Document Title
Syphon Reservoir Improvement Project
Document Type
NOD - Notice of Determination
Received
Posted
6/5/2024
Document Description
The State Water Resources Control Board (State Water Board) is a Responsible Agency for the Project. The State Water Board is funding the Project referred to internally as Syphon Reservoir Improvement Project. The Project includes the replacement of the existing 59 feet (ft) high dam with a new 136 ft high embankment dam, increasing the capacity of the recycled water reservoir from 500 acre-ft to 5,000 acre-ft. The elevation of the dam crest would increase from 388 ft above mean sea level to 466 ft above mean sea level. Additional facilities would include construction of a seepage control drainage system, circulation system, inlet/outlet facilities, spillway, onsite access and maintenance roads, wetland and riparian mitigation areas, and potential recreational facilities. The existing strainer and disinfection facilities would be demolished, reconstructed, and expanded at the toe of the new dam.
Contact Information
Name
Cedric Irving
Agency Name
State Water Resources Control Board
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Phone
Location
Counties
Orange
Regions
Unincorporated
Other Information
Syphon Reservoir, located northeast of Portola Parkway between Bee Canyon Access Road and State Route 133 in unincorporated Orange County, California.
Notice of Determination
Approving Agency
State Water Resources Control Board
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Orange
Final Environmental Document Available at
1001 I Street, 16th Floor, Sacramento, CA 95814
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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