AUS divers installed a dewatering bulkhead and a hydraulically activated gate valve on the lower outlet structure at Gene Wash Reservoir. The dewatering bulkhead was installed by AUS divers at a depth of 150 feet.
Wells Dam, Douglas County PUD – Draft Tube Cable Replacement AUS was contracted to replace the Draft Tube Gate Cables in Unit 3. This work entails the entire dive crew and the PUD Maintenance Crew working under pressure in the Draft Tube Gallery. The gate connection is underwater and the gate hoists are
Wanapum Dam, Grant County PUD - Pipe Replacement Project As part of the ongoing Dive Services Contract with Grant County PUD, AUS provided dive support to install a bulkhead plate over the Raw Water Intake so that a valve and new pipes could be installed. Due to contours on the dam face, the
Cabinet Gorge Dam, AVISTA Utilities – Fish Passage Project AUS was contracted to provide the underwater support to construct a dewatering structure so that the fish passage facility could be built in the dry. Divers performed the following tasks during the project: Drill and install anchor bolts to secure
Thompson Falls Dam, Northwestern Energy – Spillway Gate Rebuild AUS was contracted to install and seal stoplogs to dewater the spillway gate. This allowed for maintenance, repairs, and painting to be performed on the gate in the dry. AUS removed the dewatering structure after the gate work was completed.
As part of the Long Lake HED Plant Upgrade Project, AUS was contracted to survey the four draft tubes and the tailrace floor. To perform the survey, AUS utilized a multi-beam sonar system for the tailrace and a Blueview 5000 3D Mechanical Scanning Sonar mounted on a tripod for the draft tubes. Multiple images from
AUS was contracted to perform underwater video inspection on the remote island of Sheyma. The inspection included but not limited to, remote operated vehicle inspection of the dock facility, sonar mapping of damage and debris fields. AUS mobilized a Seaeye Falcon ROV system, Kongsberg multibeam system, echo sounder and inflatable work boat to perform the
The Washington State Department of Natural Resources Derelict Vessel Removal Program awarded AUS the contract to remove an 80-foot commercial fishing vessel from the Hoquiam River in Southwestern Washington. The 90-year-old Lady Grace sank on March 2, 2018. The original plan to salvage this vessel was to lift her off the river bottom with lift
August 2013 Associated Underwater Services was subcontracted by Pacific Pile and Marine to perform underwater maintenance on the Wrangell Ferry Terminal in Wrangell, Alaska. This consisted of two phases, the first phase was an ROV inspection to identify problem areas at the terminal. The second phase was to address the areas exhibiting the most wear.
AUS was contracted to salvage the Lancer, a 27ft. 2499 ME Sailboat in Sinclair Inlet, Washington. AUS divers excavated designated areas surrounding the vessel’s hull in order install messenger lines. The divers then used the messenger lines to install rigging and lift bags. As soon as the vessel was floating and secured the AUS team
