Project Tag: remediation

Makah Tribe Soil Remediation Project

Since 2007, Global has worked alongside members of the Makah Tribe in an effort to return the remote Tatoosh and Waadah Islands back to their original condition, prior to occupation by the US Navy and Coast Guard. Global’s crews have worked on the island each summer to remove thousands of tons of contaminated soil and …

Astoria Cannery Oil Spill Cleanup

In late January 2018 at the site of an old cannery in Astoria, OR, a 5,000 gallon tank holding bunker C heavy fuel oil ruptured when the dilapidated pier above it collapsed during a storm. The US Coast Guard was notified of the oil in the water, and contracted Global for the spill response; initially …

Global Assists with Cleanup After Wildfires

In Oct. 2017, a series of wildfires swept through Northern California burning more than 245,000 acres across 9 counties, destroying approximately 8,900 structures and causing $9.4 billion in damages. Once the fires were controlled and cleanup efforts began, Global was subcontracted by Environmental Quality Management, Inc. (EQM) to provide remediation assistance, removing household hazardous waste …

Bradford Island Contaminated Sediment Removal

In 2000 and 2002,the US Army Corps of Engineers (USCOE) removed discarded pieces of electrical equipment adjacent to the upstream side of Bradford Island,part of the Bonneville Dam complex. These pieces of equipment contained PCBs that had leached out and were found in the surrounding sediment.

After the equipment was removed,a survey was performed to identify areas were the PCB concentration was above allowable limits. In 2007,a proposal was put out by USCOE to remove this PCB contaminated sediment.

We supplied the floating platforms on which the filtration system was assembled,and conducted all maneuvering and handling of the platforms. We also provide all the diving services required to perform the removal of the PCB-contaminated sediment.

Three areas were identified as “hot spots.” These areas totaled over 41,000 square feet. All three areas were dredged with a 6-inch diver-operated dredge. Dredging operations were completed in 23 days.

Working in sediment that contained high levels of PCBs required the implementation of contaminated-diving procedures. Divers wore vulcanized rubber dive suits with special neck seals that are integral to the dive hat,and connected boots and sealed gloves which totally isolate the diver from the surrounding water. When the diver surfaced,tenders wore rain suits and face shields to protect themselves from contaminated sediment that may have attached itself to the diver’s suit.