Bowman Low Level Outlet Phase 2 Repair Project (Project)
Summary
- SCH Number
- 2015058166
- Public Agency
- State Water Resources Control Board
- Document Title
- Bowman Low Level Outlet Phase 2 Repair Project (Project)
- Document Type
- NOE - Notice of Exemption
- Received
- Posted
- 5/19/2015
- Document Description
- On Jan. 26, 2013, a surge event in the low level outlet at the bowman North Dam caused a significant leak in the 1920s era outlet piping and valves. In 2013, NID performed the Phase 1 repairs on the low level outlet, which included removing and replacing the off stream portions of the piping and valves. Phase 2 repairs include the installation of a new 66-inch butterfly valve and a new 48 inch Howell Bunger Valve, with associated piping. The valve structure will be approx. 50 feet by 20 feet and will be installed on the bank of Canyon Creek adjacent to where the old outlet valves were removed in Phase 1. Phase 2 is proposed to be constructed in June 2015, during an outage period of Pacific Gas and Electric Company's associated Drum Spaulding Hydroelectric Project. Performance of the work during the outage period will eliminate water leakage through the existing powerhouse and allow Phase 2 to be constructed with minimal flows in Canyon Creek. The new concrete foundation, which will support the valves and piping, will be poured within an area isolated from Canyon Creek, minimizing any potential impacts to water quality.
- Contact Information
-
Jefferey Parks
State Water Resources Control Board
Lead/Public Agency
PO Box 2000
Sacramento, CA 95812
Phone : (916) 341-5319
Location
- Counties
- Nevada
Notice of Exemption
- Exempt Status
- Categorical Exemption
- Type, Section or Code
- S:15301,15302, Class 1, 2
- Reasons for Exemption
- Existing Facilities. Replacement or Reconstruction.
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.