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February 4, 2013
The Port of Seattle has awarded a $10.5 million contract to Imco General Construction for cleanup along the waterfront at Terminal 117 in the South Park area.
Beginning in May, Imco will remove contaminated upland soil and river sediment. The job will include demolition, excavation, dredging, disposal, upland and dredge backfilling, and related work.
Upland and riverbank work is scheduled to finish by Oct. 31, and sediment work must be finished by Feb. 15, 2014.
Terminal 117 is in the Lower Duwamish Waterway Superfund Site, along the west bank of the waterway between 14th Avenue South, Dallas Avenue South and South Donovan Street.
The project is part of a larger cleanup backed by the port and city of Seattle.
Prior to 2000, the site was used for manufacturing asphalt shingles, which led to soil and sediment contamination over years of operation.
The area was identified for cleanup after environmental agencies reported high contaminant levels in the uplands, river bank and sediments, and parts of surrounding residential yards and streets.
The port bought the site in 2000 and has issued several cleanup actions since then.
In early December, NRC Environmental Services started a $1 million-plus city contract to clean up eight residential yards, an alleyway and two planting strips near the terminal.
NRC is about half finished with yard and planting strip cleanup, and later this month will start cleaning up the southern alleyway between South Cloverdale, Donovan, and 14th and 16th streets. All of the work should be finished by April 1.
The city plans to seek bids on another project in the area in about a year that would replace streets and stormwater systems. A city spokesman said that project is 30 percent designed and they don't know the cost yet.
For the T-117 work, Imco in December submitted the lowest bid out of five. The other four bids were less than $15 million, below the engineer's estimate of $16.5 million.
Ferndale-based Imco has finished several projects for the port in the last 10 years, including improvements to Terminal 10 on Harbor Island and two infrastructure projects along the Lake Washington Ship Canal in Ballard.
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