Project Tag: California

Spill Support for Sunken Tug

Global Diving & Salvage was contracted by a local dredge company to clean up oil spilled from a sunken tugboat near Pittsburg,CA. The Global crew deployed containment boom,sorbents,and a skimmer to contain and recover the oil that spilled from the tug. After the tug owner re-floated the vessel,Global crews defueled the vessel and removed over 3,000 gallons of oil and water from the bilge to a Baker tank onshore.

Abandoned Recreational Vessel Salvage

Global Diving & Salvage,Inc. was contracted by the Vallejo Marina to raise a 42’ sunken vessel and to respond to pollution released as a result of the sinking. Oil containment boom was deployed around the sunken vessel while divers placed heavy lift straps under the hull of the vessel. CS Marine of Vallejo,CA provided a derrick crane which was used to raise the vessel to the surface while the Global crew dewatered the vessel and conducted damage control. The vessel was towed to a nearby haul out facility where it awaits demolition and disposal.

King River Powerhouse Repairs

Global Diving & Salvage,Inc. has been contracted by Pacific Gas & Electric to perform repairs on the 150 foot tall vertical surge shaft of the King River Powerhouse. Repairs include placing a priority underwater epoxy over potential areas of water seepage on the shaft wall. The divers are working 60 feet below the top of the shaft,in 40 feet of water. The divers are being lowered through the dry vertical portion of the shaft,a confined space,to perform the repairs.

Refinery Wharf Pile Removal

Global Diving & Salvage,Inc. is assisting CS Marine in the removal of approximately forty five timber pilings and five concrete encased pilings for maintenance operations to portions of the Shell Refinery Wharf approach in Martinez,CA. The project also included installing fiberglass forms on timber pilings for concrete restoration along the approach way.

Marine Terminal Removal

Global is providing diving services to assist with the demolition and removal of an abandoned offshore marine terminal. Existing structure is supported on concrete piling,scope of work involves the removal of an abandoned pipeline as well as assistance with cutting of concrete piling below mud line.

Stanislaus Intake Repair

Global Diving & Salvage is providing a dive crew to perform maintenance inspection and cleaning of the existing intake structure. Work also involves the removal of an existing trashrack and replacement with new. Due to limitations of access,new trashrack will be brought to site via helicopter as well as removal of the existing damaged unit.

Montezuma Depth of Burial Survey

Global Diving & Salvage is providing a dive platform and crew to perform a survey along the alignment on a high pressure natural gas pipeline that crosses the Sacramento River. This survey is being done in preparation of an upcoming river deepening project,from Sacramento to the San Francisco Bay. Divers are using probes to penetrate the river bottom to determine the amount of cover over the pipeline.

BART Transbay Tube Support

Global is providing diving assistance in the removal and replacement of anode cable and anode arrays for the BART transbay tube. The work is being performed as part of ongoing maintenance for the tube. The divers are utilize dredges and airlifts with the derrick assistance to remove up to 30’ of bay mud covering the tube to access cable penetrations. Fourteen of the anode arrays are schedule to be replaced in depths down to 130 feet. Project challenges are the bay currents and the water depth.