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Bidjugde
JOB
Lake Calavera Outlet Improvements
BID DATE
01/12/21 - 11:00
AGENCY
Carlsbad
ESTIMATE
$660,000
SCOPE
Perform the work identified as the Lake Calavera Outlet Improvements as follows: 1) remove, modify and reinstall the 24” stainless steel lake outlet piping header from the upstream side of the Lake Calavera Dam and replace the existing valves with two 18” and one 24” eccentric plug valves with pneumatic actuators and associated pneumatic control tubing and valve position signal wiring, 2) modify the air piping within the on-site control building, 3) demolish the existing hydraulic actuation unit and certain hydraulic fluid piping and tubing within the control room and outlet valve control cabinet, and clean and reuse the hydraulic hoses between the control panel and the new outlet valves for pneumatic service, 4) inspect and repair the existing air dryers and air compressors within the control room and modify the pneumatic control tubing within the control panel, 5) remove certain electrical wiring within the control panel and rewire and furnish and install a new panel face and labels, 6) modify the pneumatic piping in Pull Box F located near the top of the dam, 7) modify the valve vault at the downstream toe of the dam and furnish and install a new 24” butterfly valve for temporary control of the lake water during construction. Portions of the work will require underwater divers and/or the use of barges to complete. Control programming is not a part of this contract. Graham Jordan - 760-602-2462 graham.jordan@carlsbadca.gov
PREBID
12/17/2020 12:00

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