Project Tag: Marine Construction

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 …

Bulkhead Pile Jacketing & Sheet Pile Repair

Massachusetts Clean Energy Center’s New Bedford Marine Commerce Terminal is a multi-purpose marine cargo facility, constructed with a high capacity bulkhead to allow for the load-out of the heavy components used in offshore wind farm construction. The bulkhead is comprised of a system of sheet-pile cellular walls and steel pipe piles, which provide the required …

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, …

Legacy Wells Plug & Abandonment

Global was contracted to plug and abandon legacy wells at Treadwell 10 and North Star 815 sites near Summerland Beach, CA. Global dive teams had conducted assessments of the sites on separate prior occasions to determine the exact location and manner of the oil seepage. Two 4-person dive teams working 12 hour shifts located the …

Outfall Diffuser Section Repairs

Global was contracted to restore the Carpinteria Sanitary District’s marine outfall diffuser section to full operational capacity after diffusers were found to be damaged, missing discharge elbows, and buried below sand line. The bottom topography had changed during recent winter weather events, resulting in several feet of sand and rock deposits covering the diffuser section …

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 …

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. …

Underwater Grout Repairs

Global was contracted to perform maintenance and underwater grout repairs to three waste gates at Ryan Dam in Great Falls, MT. The 5-person dive team consisted of the Dive Supervisor and four divers. The surface dive spread and decompression was based on a 30’ x 30’ EZ Float barge. The Dive Supervisor directed operations from …

Floating Bridge Anchor Cable Excavation

Global was subcontracted to excavate and side-cast bottom sediment around the anchor cables holding Seattle’s I-90 floating bridge in position so the cables could be replaced. The process utilized a jetting tool designed and fabricated by Global, as well as ROV observation to guide the jetting tool into position and monitor the excavation of material. …