Mono Gate One Diversion Facility Upgrade Project
2 Documents in Project
Summary
SCH Number
2008012044
Lead Agency
Los Angeles County
Document Title
Mono Gate One Diversion Facility Upgrade Project
Document Type
NOD - Notice of Determination
Received
Posted
5/29/2008
Present Land Use
Resource Management General Plan Designation
Document Description
The City of Los Angeles Department of Water and Power (LADWP) is proposing the upgrade and modification of the existing weir structure at Mono Gate One to meet present day requirements. Additionally, the project will improve functionality of the facility by installing current technology in monitoring, communication, and control devices. The project is located in the southwestern portion of Mono County, California. The Grant Reservoir is located approximately 0.5 mile to the west, and Mono Lake is located approximately 6.0 miles to the northeast of the project site. The primary access to the project site is from State Highway 395 via West Portal Road. The proposed Mono Gate One Facility Upgrade Project consists of: (1) construction of an approximately 150-foot bypass pipeline and valve installed to ensure that flows to Lower Rush Creek will not be interrupted. This pipeline will eventually be maintained as a bypass pipeline; (2) improvements to the Mono Gate structure, installation of equipment (for flow control and monitoring telemetry), and a new measuring station in the Rush Creek Return Ditch downstream of the bypass pipeline; and (3) either a new 12 kilovolt overhead power line from the Grant Reservoir shaft house to Mono Gate One along the existing road or a solar power array at the Mono Gate One facility to power operations. The completion of the project will (1) improve the structure integrity of the Mono Gate One Diversion facility, (2) allow for better flow control and measurements from the Grant Reservoir to Lower Rush Creek and Mono Craters Tunnel, and (3) allow for better communications, flow monitoring and flow control between the Mono Gate One facility and LADWP's Bishop facilities.
Contact Information
Name
Sarah Easley Perez
Agency Name
Los Angeles County Department of Water and Power
Contact Types
Lead/Public Agency
Phone
Location
Counties
Mono
Cross Streets
State Highway 395, West Portal Road
State Highways
395
Waterways
Grant Reservoir
Other Location Info
City/Nearest Community: Lee Vinning
Notice of Determination
Approving Agency
Los Angeles Department of Water and Power Board of Commissioners
Approving Agency Role
Lead Agency
Approved On
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
N/A
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
N/A
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.