Casa Loma Siphon No. 1 and San Jacinto Pipeline Protection Project
2 Documents in Project
Summary
SCH Number
2025121062
Lead Agency
Metropolitan Water District of Southern California
Document Title
Casa Loma Siphon No. 1 and San Jacinto Pipeline Protection Project
Document Type
NOD - Notice of Determination
Received
Posted
4/17/2026
Document Description
The proposed Project includes the encasement of approximately 320 feet of the CRA Casa Loma Siphon No. 1 Pipeline and approximately 295 feet of the San Jacinto Pipeline to protect the pipelines from flotation and exposure. The encasement would consist of concrete poured around the existing pipelines, and both encasements would be reinforced with steel rebar placed both horizontally and vertically to ensure structural integrity. The Project would not result in the addition of new aboveground components or appurtenances. The Project would not result in changes to Metropolitan’s existing operation and maintenance conditions at the Project site.
Contact Information
Name
Alfredo Aguirre
Agency Name
Metropolitan Water District of Southern California
Job Title
Environmental Specialist
Contact Types
Lead/Public Agency / Project Applicant
Phone
Email
Location
Coordinates
Cities
San Jacinto
Counties
Riverside
Regions
Southern California
Cross Streets
Soboba Road and State Street
Zip
92583
Total Acres
6.7
Parcel #
430-220-003, 430-220-008, 430-220-010, 430-220-011
State Highways
79
Railways
None
Airports
None
Schools
Clayton A. Record, Jr. Elementary School
Waterways
San Jacinto River, Potrero Creek, San Jacinto Reservoir, Other unnamed drainages and ponds
Township
4S
Range
1W
Section
15
Base
San Bern
Other Location Info
De Anza Elementary School, Rose Salgado Elementary School, Monte Vista Middle School, Mountain View High School, San Jacinto High School, San Jacinto Valley Academy, San Jacinto Technology Institute, Mt. San Jacinto College, Betty G. Gibbel Regional Learning Center Community School
The Project site encompasses an approximately 6.7-acre area located within and adjacent to the San Jacinto River, between Soboba Road and State Street, near the city of San Jacinto in unincorporated Riverside County, California. The Project site is owned by Metropolitan and contains the Colorado River Aqueduct (CRA) Casa Loma Siphon No. 1, CRA Casa Loma Siphon No. 2, and the San Jacinto Pipeline.
Notice of Determination
Approving Agency
Metropolitan Water District of Southern california
Approving Agency Role
Lead Agency
Approved On
County Clerk
Riverside
Final Environmental Document Available at
700 N. Alameda Street, Los Angeles, CA 90012
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
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(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
No
Attachments
Notice of Determination
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