Phase II and III Environmental Site Assessments and Remediation: City of Ansonia, Connecticut
Leggette, Brashears & Graham, Inc. (LBG), was retained by the City of Ansonia Economic Development Corporation to conduct Phase II and III Environmental Site Assessments and preparation of the Remedial Action Plan to address environmental issues at city-owned properties. The buildings were located in a highly urbanized area and had a history of industrial use, including machine shops and manufacturing of brass novelties dating back to the late 1800’s. The sale of these brownfields properties was complicated by the liability for hazardous pollutants from historical manufacturing operations, which prospective developers would not accept.
LBG characterized the degree and extent of soil and groundwater impacts from the fuel-oil tanks and former manufacturing operations in a phased approach and found that soil was impacted with petroleum from leaking fuel oil tanks, polychlorinated biphenyls from electrical transformers and lead. LBG provided public outreach services to explain the environmental conditions of the properties and developed solutions to remove the public health threats.
A complete removal of the impaired soil was cost prohibitive. It was also determined that the redevelopment of the property could be integrated into the environmental solution in a manner that made the build-out part of the solution. Our technical approach took advantage of the available exceptions and alternatives provided in the Remediation Standard Regulation (RSR) to prevent exposure to pollutants by eliminating pathways to environmental receptors as a means of compliance. Permanent solutions were developed for non-compliant areas and prospective developers were presented with a clear path forward to achieve compliance with environmental standards.
LBG’s detailed remedial action plan enabled the City to obtain a grant fromthe Connecticut Development Authority through the Valley Council of Governments to remediate the properties. With funds to remediate the property secured, the City also entered into a purchase and sale agreement with a developer who will acquire the property after remediation is completed.