Projects

Marine Construction


Olmsted Lock and Dam

US Army Corps of Engineers (2008)
Furnishing equipment and labor for diving and diving-related services in support of the contractor’s Olmsted Dam construction effort.

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Cheesman Dam Upstream Control Project - Phase 1

Denver Water (2010)
Project management for control structure, electrical upgrade throughout site and diving services to install three new outlet gates on face of dam.

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Mercer Island Sewer Line and Pump Station #4 Replacement

City of Mercer Island (2009)
Providing diving support for replacement of over 7,000 feet of sewer pipe in Lake Washington.

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The Dalles Bay 8/9 Spillwall

US Army Corps of Engineers (2008)
Provided diving services to assist with the installation of a wall to direct migrating salmonids to deeper water.

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New York Water Supply

New York DEP (2007)
Saturation dive project to provide non-destructive testing, selective demolition, and construction support in 685 feet of water.

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Bull Run Dam 1 Outlet Works Improvements Phase 1

Portland Water Bureau (2009)
Project involves removal and replacement of stems, guides and actuators on 7 outlet gates, removal of and remounting of gate and repairs to spillway.

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Hood Canal Bridge Replacement

Washington State DOT (2009)
Diving and ROV services to connect anchor cables to new concrete anchors.

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Carkeek/Richmond/Alki Outfall Repair - Alki

King County - Wastewater Treatment Division (2009)
Upgraded the cathodic protection system on Alki outfall, and installed five anode sleds in 100 feet of water.

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Carkeek/Richmond/Alki Outfall Repair - Richmond Beach

King County - Wastewater Treatment Division (2009)
Moved existing sediment to allow for removal and replacement of outfall diffusers in 150 feet of water.

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Carkeek/Richmond/Alki Outfall Repairs - Carkeek

King County - Wastewater Treatment Division (2009)
Replaced 11 steel diffusers with new HDPE diffusers in 200 feet of water. Divers used a combination of helium and oxygen.

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Wharf Piling Repair

Port of Anchorage (2009)
Cleaned damaged steel piling with high-pressure water blasting, installed steel jackets and grouted in place.

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Boat Ramp Upgrade

Conoco Phillips Ferndale Refinery (2008)
Removed existing woodpile-supported boat ramp, and replaced with new steel piling and galvanized steel frame and track components.

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Bradford Island Contaminated Sediment Removal

US Army Corps of Engineers (2007)
Provided marine support and diving services involved in the hand dredging of PCB-contaminated sediment.

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Replacement of Stems, Couplings and Stem Guides at Eleven Mile Canyon Dam

Denver Water (2007)
Replaced existing stems, stem guides and couplings on three slide gates at 8,600 feet of elevation in Colorado.

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Priest Rapids Dam Spillway Apron and End Sill Underwater Concrete Repair

Grant County PUD (2006)
Repaired several areas of the ogee, stilling basin, and end sill of Priest Rapids Dam.

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Underwater Installation of Inlet Gate

Denver Water (2003)
Installed a 10-ton hydraulic gate on the upstream side of a high-elevation reservoir in 220 feet of water.

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