Bachelor Island Phase II Restoration - Aquatic Contracting

Ridgefield Wildlife Refuge, WA

Aquatic Contracting (AC) contracted with Columbia River Estuary Study Taskforce (CREST) to construct the Bachelor Island Phase II Restoration.

The project presented some difficult logistical challenges as the bridge to Bachelor Island was being replaced and the temporary bridge could not be crossed with heavy loads. AC utilized its headquarters on the Multnomah Channel which has a boat ramp to load all equipment and transport the equipment via barge to the project site. All mobilizations were completed in one day. The site also had constraints as ground water levels were high and final grade was 4 feet below ground water. AC utilized GPS controls on the excavators to make the in-water excavation feasible and ensure overall goals of the project were met.

The project goals included the excavation of nearly 116,000 cubic yards of dredge spoils to re-connect a wetland complex to the Columbia River, creation of shallow water habitat, placement of large woody debris and removal of garbage and hazardous debris. The project was completed in less time than anticipated and on budget.

The project was completed in less time than anticipated and on budget.

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