Syphon Reservoir Improvement Project (California Endangered Species Act Incidental Take Permit No. 2081-2025-033-05 (ITP))
11 Documents in Project
Summary
SCH Number
2019080009
Lead Agency
Irvine Ranch Water District
Document Title
Syphon Reservoir Improvement Project (California Endangered Species Act Incidental Take Permit No. 2081-2025-033-05 (ITP))
Document Type
NOD - Notice of Determination
Received
Posted
12/16/2025
Document Description
This proposed project involves replacing the existing 59-foot engineered dam at Syphon Reservoir with a new 138-foot engineered dam, to increase the recycled water storage capacity from the current 500 acre-feet to a total of 5,000 acre-feet. The new dam will include a spillway to protect the reservoir from overtopping, as well as a seepage control drainage system, and a circulation/aeration system for the reservoir.
The Project will result in impacts to 90.97 acres of Crotch’s bumble bee (Bombus crotchii) habitat including temporary impacts to 26.76 acres; the Project will permanently remove 64.21 acres of Crotch’s bumble bee habitat. The project is expected to result in incidental take of Crotch’s bumble bee, which is designated as a candidate species under the California Endangered Species Act. The ITP referenced above as issued by CDFW authorizes incidental take of species listed under CESA that may occur as a result of Project implementation.
Contact Information
Name
Jennifer Turner
Agency Name
California Department of Fish and Wildlife
Job Title
Senior Environmental Scientist (Supervisory)
Contact Types
Responsible Agency
Phone
Name
Fiona Nye
Agency Name
Irvine Ranch Water District
Job Title
Assistant Director of Water Policy
Contact Types
Lead/Public Agency
Phone
Email
Location
Coordinates
Cities
Irvine
Counties
Orange
Regions
Southern California
Other Location Info
The Syphon Reservoir Improvement Project (Project) is located at the existing Syphon Reservoir recycled water storage facility within the unincorporated County of Orange. The Project is located immediately adjacent to the City of Irvine, at approximately 33.710230, -117.731334.
Notice of Determination
Approving Agency
CDFW
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Orange
Final Environmental Document Available at
The EIR prepared by the lead agency for the Project is available to the general public at the office location listed above for the lead agency. CDFW’s administrative record of proceedings related to the incidental take permit is available to the public for review at CDFW’s regional office.
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
Final Document(s) [Approved_Certified draft environmental documents]
Notice of Determination
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) 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. For more information, please visit LCI’s Accessibility Site.