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Alco site cleanup complete, DEC announces

Alco site cleanup complete, DEC announces

Contamination cleanup is complete on two parcels at the Mohawk Harbor site.
Alco site cleanup complete, DEC announces
An aerial view of the former Alco site taken in April 2016.
Photographer: Marc Schultz

Contamination cleanup is complete on two parcels at the Mohawk Harbor site, the New York Department of Environmental Conservation announced.

The former Alco site contained PCBs, metals and other chemicals that needed to be removed and disposed of as the land was redeveloped by Galesi Group. The site is part of the state’s Brownfield program, which offers tax breaks for companies to cleanup contaminated properties and redevelop them. Site cleanup took place under a DEC approved Interim Remedial Measure.

At the portion of the site that borders the Mohawk River, about 72 tons of PCB and metal-contaminated soil and roughly 1,170 tons of petroleum-contaminated soil were excavated and disposed of off-site, according to a DEC press release.

Another five gallons of diesel soil was recovered and disposed off-site, and about 10,000 gallons of contaminated groundwater was collected, treated and sent to the Schenectady wastewater treatment plant, according to the press release.

At the parcel of land sandwiched between the STS Steel site and the land bordering the Mohawk River, another 900 tons of contaminated soil and 100 gallons of diesel oil was removed and disposed of, while approximately 20,000 gallons of contaminated groundwater was collected, treated and sent to the wastewater treatment plant.

Site cover has since been installed on both parcels of land to allow for residential use of the property. Cover consists of buildings, pavement and soil.

The Alco site was used for manufacturing locomotives and military hardware from 1849 through 1969. As a result, petroleum and other chemicals seeped into the soil and groundwater, forcing the need for cleanup as Galesi group redeveloped the land.

The developer applied and got approval for the Brownfield agreement in August 2010, the DEC said.

The Mohawk Harbor site includes Rivers Casino and Resort, which will open in February, a Marriott hotel that opened in October, residential developments and retail and office spaces. Most of the projects are expected to be completed by the end of summer 2017.

The DEC is reviewing a final engineering report on the cleanup. Once approved, it will be made available to the public.

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