The Bangor-Aroostook Railroad Company site, EPA ID 110071100493, is currently listed as an active site on the National Priorities List. Regulatory oversight confirms that unspecified hazardous substances remain a primary concern for the surrounding area. Exposure pathways include the migration of contaminants through groundwater aquifers and the potential for soil vapor intrusion into residential structures. Long-term health risks associated with these pathways include increased cancer risks, respiratory complications, and neurological damage. Residents should consult the EPA Superfund database for specific technical updates on cleanup progress. To reduce exposure, residents must adopt three defensive measures. First, install a certified multi-stage water filtration system to treat all incoming potable water. Second, implement a vapor mitigation system or a sealed basement barrier to prevent toxic gases from entering the home. Third, perform regular testing of garden soil for heavy metals and chemicals before growing any food. Additional regional threats from the Dow Air Force Base Fire Training Area and the Maine Air National Guard-BIA contribute to the cumulative critical risk level in the 04419 area.