Post-Storm Dam 5 Emergency Sediment and Debris Removal Activities Project NOE

1 Documents in Project


SCH Number
Public Agency
State Water Resources Control Board
Document Title
Post-Storm Dam 5 Emergency Sediment and Debris Removal Activities Project NOE
Document Type
NOE - Notice of Exemption
Document Description
Due to wildfires and heavy precipitation events, a large volume of sediment has migrated into the Dam 5 impoundment. SCE is concerned that continuing accumulation of sediment could cause a collapse of the dams’ intake gates. To avoid this collapse, SCE proposes mechanical removal of the sediment. To access the Dam 5 impoundment, SCE will draw down the Dam 5 reservoir using thelow-level outlets. Additionally, SCE will expand the existing access road ramp by approximately 20 feet. The expanded access road will be constructed using up to 200 cubic yards of crushed rock to create a drivable surface. The expanded access road will be left in place after Project completion. A temporary bypass channel will be constructed out of two side-by-side 48-inch-diameter culverts to allow flows to bypass the construction area. SCE will remove approximately 2,000 cubic yards of sediment located adjacent to the Dam 5 intake structure and directly upstream of the Big Creek Powerhouse No.2. The Project will result in no more than 3.24 acres of temporary impacts to the Dam 5 reservoir. Once sediment removal is complete, the ramp and culverts and all imported earthen support materials will be removed. Only the permanent rock fill for the base of the extended access road will remain in place.

Contact Information

Philip Meyer
Agency Name
State Water Resources Control Board
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


big creek
Citywide, Countywide, Statewide, Unincorporated
Other Location Info
Big Creek Hydropower Facilities, Big Creek, CA 93605

Notice of Exemption

Exempt Status
Emergency Project
Type, Section or Code
Sec. 21080(b)(4); 15269(b)(c)
Reasons for Exemption
The Project qualifies for an exemption as an Emergency Project under California Code of Regulations Section 15269 (b)(c) because sediment removal from the Dam 5 impoundment is planned to prevent the dam's intake gates collapsing, and helping to ensure that essential service will not be interrupted.
County Clerk


Disclaimer: The Governor’s Office of Planning and Research (OPR) 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. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

Download CSV New Search Print