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Waste Site Cleanup & Reuse in New England

Maine Alum Grand Isle

Maine Alum Grand Isle, Grand Isle, ME

The Maine Department of Environmental Protection called EPA on Nov. 22, 2010 about hazardous substances in the abandoned Maine Alum Corporation facility in Grand Isle. DEP had found about 3,000 gallons of 70 percent sulfuric acid and other potentially hazardous substances at the facility during a Nov. 1 inspection. Maine Alum, which manufactured aluminum sulfate from 1999 to 2009, mixed alumina trihydrate with sulfuric acid and water to make its product. When Maine Alum stopped operating in 2009, it left behind hazardous substances and materials.

When EPA arrived Nov. 22, it found the site consisted of a metal building with six above-ground storage tanks inside. In addition, two partially full tankers were outside. Liquid and solid material had already released from one of the two tankers outside the building. EPA removed 1,269 gallons of sulfuric acid from a 5,000-gallon fiberglass tank inside the building. EPA returned the week of Dec. 6 to address the two outside tankers, remove liquid from the floor, determine volumes and characterize contents of remaining tanks, and secure tank farm until disposal.

A total of 3,454 gallons of sulfuric acid was removed from a tank inside the building; 13,728 gallons of highly acidic liquid was removed from alum tanks inside the building; acidic liquid was removed from tank farm plumbing; corrosive sludge in base of tank farm tanks was disposed of off site; acidic material in tank next to building was removed; solid acidic material tank near Main Street was disposed of; and then the tank was decontaminated and staged; acidic water and sludge on tank farm floor was removed; all hazardous substances at the site was removed and a fence restricting access to the tank farm was erected.

Location: Grand Isle, ME
EPA Mobilization Date*: 11/22/2010
EPA Demobilization Date*: 09/22/2011
Contact: Claudia Deane (deane.claudia@epa.gov)

*The information contained on this website is merely informational; any dates found on the website cannot be relied upon to create any rights, substantive or procedural, enforceable by any party in litigation with the United States. EPA reserves the right to change such dates at any time without public notice.

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