Repair of Outlet Pipe and Gate Valve on Lake Madrone Dam

Repair of Outlet Pipe and Gate Valve on Lake Madrone Dam

The project will consists of the repair & relining of the outlet pipe extending through Lake Madrone Dam & refitting the gate & valve providing control of water quantities passing through the pipe. The work will include the staging & location of material to repair the pipe at the upstream (within the lake bottom) by inserting pipe within the existing pipe and at the downstream end of the outlet pipe utilizing a new valve. The areas of work upon the outlet pipe are all manmade structures and areas. Staging of equipment to perform the work may involve the temporary installation of earth or rock platforms at the inlet of the pipe and a coffer dam around the inlet made of sediment and sand bagging material from the lake sediment deposits with waterproof sheeting. At the outlet area, which is one the manmade slope of the dam, the PVC or other manmade pipe which is fitted through the current cement outlet pipe will be extended from the face of the dam and a new gate valve installed. The gate valve will be protected from damage with a concrete or steel frame.

Butte

California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Department of Public Health (CDPH), California Department of Transportation, District 3 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California State Lands Commission (SLC), Department of Water Resources, Resources Agency, State Water Resources Control Board, Division of Water Rights, California Regional Water Quality Control Board, Central Valley Redding Region 5 (RWQCB), Cal Fire

California Regional Water Quality Control Board, Central Valley Redding Region 5 (RWQCB), Cal Fire

Water Facilities (Type repair dam outle)

Repair dam outlet

Public Services, Transportation, Vegetation