April - September 2007 Puddingstone Dam San Dimas, CA
C&W worked with the Los Angeles County to make repairs to the intake structures at Puddingstone Dam. Ladders, landings, and fall protection
were implemented in the control shaft, repairs were made to the intake tunnel lining, and the existing slide gates were replaced with a Rodney
Hunt cast-iron slide gate. C&W collaborated with Triton Engineers to design a steel dewatering bulkhead for the intake tunnel, utilizing its
extensive experience with flow control methods and knowledge in value engineering. C&W subcontractor Beard Electric installed the electric motor
operator and associated electrical equipment.
Point of contact: Los Angeles County Department of Public Works Perfecto Tobias, Construction Division, 626/458-4954
July - August 2007 Barrett Lake Dredging Dulzura, CA
C&W worked with Orion Construction Corp. to replace valves at the Barrett Lake dam. More than 300 cubic yards of silt upstream of the dam
were dredged using a submersible Toyo pump supported by a four-point anchor Flexi-Float barge, allowing C&W divers to locate and seal 30"
and 16" valves previously hidden below the mud line. C&W has worked with the city of San Diego to implement a BMP (Best Management Practices)
and SWPPP (Storm Water Pollution Prevention Plan) that protects water quality at the lake.
Point of contact: Orion Construction Corporation Spencer Danks, Project Supervisor, 760/597-9660
August 2007 Seal Beach Naval Weapons Station Cyclopean Wall Repairs Seal Beach, CA
C&W provided a mobile dive station, concrete mixer and pump to fill voids in a cyclopean wall at the Seal Beach Naval Weapons Station.
Divers identified the areas of concern, fabricated concrete forms, and pumped repair concrete into the voids. C&W conducted in-water
video inspection of the work.
Point of contact: R.E. Staite John Sinclair, Project Supervisor, 619/477-7900
2004 - present Diving Services on Lake Mathews Outlet Tower Riverside, CA
C&W has performed underwater valve inspection and repairs on the new outlet tower since its construction.
Work has included the removing and reinstallation of actuators and seal rings on the valves at depths in
excess of 100 ffw.
Point of contact: JF Shea Construction, Inc. Pete Barotti, 714/962-7577
