Lurline Check and Siphon Structure Replacement Project
2 Documents in Project
Summary
SCH Number
2024060457
Lead Agency
Glenn-Colusa Irrigation District (GCID)
(GCID)
Document Title
Lurline Check and Siphon Structure Replacement Project
Document Type
NOD - Notice of Determination
Received
Posted
7/22/2024
Document Description
The District is proposing the construction of a check structure and siphon to replace the existing check structure and siphon, as well as their associated facilities, in their approximate current location along the Glenn-Colusa Canal. The new structure would include box culverts or precast concrete pipes constructed to convey 100% of the Glenn-Colusa Canal’s design flow rate at this location (630 cubic feet per second (cfs)). The initial phase would involve clearing and grubbing any vegetation present within the Project work area. The next phase would see the demolition and removal of the existing check, siphon, and outlet structures, as well as the two existing maintenance bridges and overflow spill. The existing overflow spill is no longer used at the site, so a replacement overflow spill is not included in the proposed structure. Prior to commencing the demolition and removal, a bypass would be constructed for Lurline Creek. While the Canal would be dry during construction, the proposed construction window occurs during the Creek’s peak flows. A temporary bypass channel would be built to divert flows around the work site and back into Lurline Creek so as to not impact the creek’s water flow. The bypass would be an earthen channel with a High Density Polyethelene (HDPE) lining and design maximum flow rate of 850 cfs.
Contact Information
Name
Jeff Sutton
Agency Name
Glenn-Colusa Irrigation District
Job Title
General Manager
Contact Types
Lead/Public Agency
Address
Phone
Email
Location
Cities
Maxwell
Counties
Colusa
Regions
Northern California
Other Location Info
The proposed Project is located in Colusa County, California, approximately 60 miles northwest of Sacramento and 90 miles south of Redding (see Figure 2 1 and Figure 2 2). The proposed Project is comprised of two separate sites: the 2.4-acre Lurline Check site and the 5.2-acre borrow site, located approximately north of the Lurline Check. The Lurline Check site (Check site) is located on Assessor’s Parcel Number (APN) 014-280-009. The proposed borrow area is located on APNs 011-270-087 and 011-270-062. The Area of Potential Effect (APE) for the Project is approximately 7.6 acres in size, which includes the Check site, borrow area, and all construction staging, and access areas needed for construction equipment.
Notice of Determination
Approving Agency
Glenn-Colusa Irrigation District
Approving Agency Role
Lead Agency
Approved On
County Clerk
Colusa
Final Environmental Document Available at
Glenn-Colusa Irrigation District - Office, located at 344 East Laurel Street, Willows, CA 95988
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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