AUS installed two dewatering bulkheads at South Fork Reservoir, located outside Elko Nevada. To allow for repairs on the guardian gates, AUS installed two dewatering bulkheads on the intake structure located at the bottom of the reservoir. At an altitude of 5,300 feet, AUS lifted and installed two bulkheads at 10,000 pounds each and successfully
In Buenos Aires, Argentina, AUS provided consulting, design, and direct supervision of underwater concrete placement in the four drop shafts required for the implementation of the tunnel machine. AUS was involved in the development of the underwater requirements including the safety plan, excavation, survey, rebar, and drain installation components in 165 feet of water utilizing
Box Canyon Dam Upstream Fish Passage Project Fall of 2017 Box Canyon Dam, located on the Pend Oreille River in Washington, is required to provide upstream fish passage for the Bull Trout, West slope Cutthroat, and the Mountain Whitefish. AUS provided diving support for the project working for the General contractor, J.W. Fowler, and
August 2013 AUS conducted a survey of the Twin Falls Powerhouse tail race tunnel between August 6 and August 8,2013. The condition of the tunnel was documented by ROV video and scanning and imaging sonars. After analysis of the information provided by the survey, thetunnel was found to be in good condition with no significant
In the winter of 2014, AUS spent 10 weeks in Great Falls, Montana, overhauling the waste gates at Ryan Dam. The crew removed the gates and gate stems, installed new gate guides, and replaced the reworked gates and stems. Utilizing Nitrox breathing mixture throughout the project, divers made 194 dives to a depth of 66′,
ROV Station at Twin Falls Associated Underwater Services, Inc. (AUS) conducted a Remotely Operated Vehicle (ROV) survey of Twin Falls Power Plant tail race at the Snoqualmie River near North Bend, WA. The project was conducted for ENEL Green Power North America (EGP) who operates the hydroelectric facilities at the site. The tail
After nearly six years of construction, AUS is proud to announce the opening of the new highway 520 floating bridge across Lake Washington. The new route 520 bridge is the world’s longest floating bridge at 7,710 feet long, making it 132 feet longer than the old highway 520 bridge. Once the new pontoons were established,
Fall 2015 Striving to improve the water quality of Spokane’s River, the City of Spokane and partners created a project known as the “barge cleanup”. The river cleanup was part of a series of events in September of 2015 to clean up Spokane’s river by remove large pieces of rubbish from the river. Pictured to the
ROV Penetration Inspections of: Farr Pump Plant, Willow Creek Intake, and Grand Lake Intake Farr Plant Intake Inspection AUS conducted the Farr plant intake inspection which required the internal and external inspection of the intake structure utilizing a SEAEYE Falcon ROV. The structure was located in 113 feet of water at an altitude of 8200 feet.
AUS had multiple dive teams working on the Nine Mile Dam project. The underwater work is part of a large refurbishment project for Avista corporation. AUS performed underwater operations including wall sawing, core drilling, welding, burning, anchor bolt installation, steel setting, grouting, bulkhead guides, and bulkhead installation and removal. The challenging working conditions required a team effort and an
