Project Tag: commercial diving

San Rafael Sunken Vessel Response

Global was contracted by a local marina when a 49’ offshore sport-fishing vessel had sunk overnight. A plan was made to defuel the vessel and then raise it utilizing lift bags, as a crane barge would be unable to safely access the marina. A dive crew was dispatched to the marina where they began defueling …

Gross Dam Trashrack Modifications

The Primary Outlet Works trashrack structure at Gross Dam was constructed with the dam in 1955; it was comprised of a 25-foot rectangular reinforced concrete frame structure with 27 steel trashrack panels. In 2004, modifications were made by Global to remove two concrete beams and install replacement steel beams and bracings after the installation of …

Guam Outfall Diffuser Installation

Global was subcontracted by Healy Tibbitts Builders (HTB) to install a new outfall and diffusers for the Guam Waterworks Authority as an upgrade of the treatment plant’s existing high density polyethylene (HDPE) outfall pipe. The outfall pipe is located in the Philippine Sea, approximately 2,000 feet offshore at an approximate depth of 140 FSW. The …

Siphon Access Stoplog Installation

Earlier this year Global completed a multi-phase, four-location siphon access stoplog project for Central Arizona Project (CAP) that would allow CAP’s siphon sections to be safely and easily dewatered. CAP is a 336-mile long canal that brings Colorado River water to central and southern Arizona at a flow rate of 1.35 million gallons a minute, …

Olmsted Locks and Dam: Building an Era

The Olmsted Locks and Dam project is the largest civil works project in the history of the U.S. Army Corps of Engineers. Working through the U.S. Army Corps of Engineers – Louisville District, the Washington Group / Alberici, Joint Venture (WGA) was awarded the contract to build the dam. Acting as a subcontractor, Global provided …

F/V AMAK Defuel and Refloat

Global initially responded to the sinking of the wooden fishing vessel Amak in the Port of Garibaldi, Oregon Marina for the USCG, Sector Columbia River. The crew was tasked with completing on-water recovery of petroleum leaking from the vessel, as well as defueling the accessible tanks underwater to lessen the continued pollution liability. Crews used …

Capitol Lake Targeted Dredging

While attempting to steal copper, vagrants damaged a disused electrical transformer located within a former brewery building. This caused the release of more than 700 gallons of electrical insulating oil containing polychlorinated biphenyls (PCBs) into the adjacent Deschutes River. The oil traveled downstream into the 260-acre Capitol Lake in Olympia, contaminating the bottom sediment and …

Potential HAZMAT Barrel Recovery

In late 2018, a team of recreational divers discovered several barrels at the bottom of the lake, some bearing labels of herbicides 2,4,5-T and 2,4-D; the combination of which is commonly known as “Agent Orange”. As the lake supplies drinking water to the town of Joseph, OR, authorities determined the barrels needed to be inspected …

Belize Pile Wrap Installation

Global was recently contracted to perform a large pile wrap installation project in Belize.  Contracted by PND Engineers, Global inspected and wrapped 113 steel piles on the Norwegian Cruise Line (NCL) docking pier on the island of Harvest Caye in Belize. Working around the active cruise ship schedule, the divers first performed a Level 1 …

Salty’s Understructure Repairs

A popular restaurant featuring views of Elliot Bay and downtown Seattle, Salty’s is located in a 100-year old former mill building built over the water. The substructure consisted of piles and beams; it had undergone numerous changes and repairs through the years but much of the supports had deteriorated significantly and needed to be replaced. …