Water Resources, Department of
(California Department of Water Resources)
Pyramid Dam Spillway Inspection
NOE - Notice of Exemption
The Federal Energy Regulatory Commission n(FERC) has required DWR to immediately perform a thorough inspection of all of FERC licensed spillways to investigate and potentially repair the structure. The new inspections are required in light of the recent emergency action at Lake Oroville, CA. The Pyramid Dam Spillway inspection will include sounding of spillway invert and walls with hammers/chain drag/declamation roller to check for concrete delamination. Preparatory work includes lowering approximately 50 sandbags with a crane in the spillway invert to reduce gate leakage, utilizing hand tools (squeegees/plastic shovels/scrapers) or pressure washer to remove algae in the spillway invert, and setting anchors and ropes for rope access inspection of controlled spillway invert. The spillway work will also include sealing concrete joints and cracks, and repairing areas of concrete spalling.
Closest town is Gorman, approximately 15 miles north of the project area.
Notice of Exemption
Type, Section or Code
Class 1; S: 15301
Reasons for Exemption
The State Water Project provides significant and important services to many Californians. This project is exempt because it involves minor repairs to an existing dam appurtenant. This project will not result in impacts to special status species or habitat. Because this activity can be implemented without any significant environmental impacts.