On the Sammamish Bridge Project, AUS divers dredged, cut timber support piles, and rigged the bridge footings for removal on four different bridge piers. The purpose of footings is to support the foundation, prevent settling, and is crucial to providing the proper support for the structure. AUS divers dug under the 58-ton concrete footings in order
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
Repairs on Snake River Dam slow wheat barges at peak of season By Anna King (Northwest News Network) Aug. 31, 2020 6 a.m. The Columbia River System, which includes the Snake River linking to Lewiston, Idaho, is a critical navigation system for shipping wheat downriver to Portland and export markets. Courtesy of Tidewater A lot
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
Essential Divers Adapt to Pandemic and Protests BY PARKER COLLINS CARSON PUBLISHED 12:50 PM ET JUN. 08, 2020 UPDATED 1:50 PM ET JUN. 08, 2020 CARSON, Calif. – Construction is considered essential during this pandemic and diving is part of that. Yet like everything else, this work has been impacted by recent protests and the COVID-19 pandemic. James
