An aluminum sulfate leak closed portions of Route 7 in Massachusetts and Vermont on Saturday morning.

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A hazardous spill from a truck transporting aluminum sulfate that started in North Adams and ended in Pownal, Vt. shut down part of Route 7 near the Stewart's Shops convenience store just north of the Williamstown border early Saturday morning.

The road has since been reopened.

According to Williamstown Interim Police Chief Michael Ziemba, a truck transporting the chemical from Holland Company in Adams experienced a broken pipe that began leaking the material in North Adams.

Ziemba said hazmat crews treated the spill areas and swept up the materials in the roadway, and that the process has been completed, as of 11:30 a.m.

He noted that aluminum sulfate is only harmful to humans if ingested.

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According to information provided by Amalio Jusino, chairman of the Northern Berkshire Emergency Planning Committee, the leak resulted in a two-foot wide path of substance remaining on the roadway beginning at the Hadley Overpass near North Adams City Hall and continuing onto Route 7 and into Vermont.  After the Massachusetts Tier 1 Hazardous Material Team conducted testing and in agreement with Massachusetts Department of Environmental Protection, Public Works agencies in Williamstown and North Adams are currently covering the substance with a neutralizing agent, which will then be swept up and disposed of properly.

Ziemba said Holland Co., a chemical manufacturer based on Howland Ave. in Adams, was helpful in the clean-up effort.

“They have a whole protocol for dealing with this,” Ziemba said. “They were great to deal with.”


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