Dutchess County, NY
No meeting scheduled.
Cecilia Echols (212) 637-3678
EPA added the Hopewell Precision Area Groundwater Contamination site in Dutchess County, New York to the Superfund National Priorities List on April 27, 2005 because hazardous chemicals were found in the soil and ground water. The approximately six acre superfund site located in Hopewell Junction, New York contained a manufacturer of sheet metal parts and assemblies. Operations on the site have generated wastes that were disposed of directly on the ground, resulting in a groundwater contamination that extends about one and a half miles. The area surrounding the site is mostly residential.
Elevated levels of volatile organic compounds (VOCs), which are potentially harmful contaminants that can easily evaporate into the air, have been detected in drinking wells and several monitoring wells located in the vicinity of Hopewell Precision Area Contamination site. Ponds located in the path of the contaminated groundwater have been impacted. Additionally, based on the results of an indoor air investigation, EPA has determined that vapors from the contaminated groundwater were finding their way into approximately 66 homes. Contamination has potentially affected more than 150 individuals.
EPA began its cleanup efforts in March 2003. Carbon Filtration Systems were installed at contaminated wells. Point-of-entry-treatment (POET) systems, which are highly effective in removing VOCs from drinking water, have been installed in 38 homes. At approximately 51 homes where indoor air showed elevated concentrations of VOCs, EPA installed Sub-Slab Ventilation Systems (SVS) which have been successful in addressing vapor intrusion problem. Drinking well and soil gas monitoring is still being conducted. Should additional impacted residences be identified, EPA will install POET systems and/or SVS in those residences. EPA is working to determine whether under current conditions, there are any potential or actual human exposures to contaminants at this site.
June 2013 Deep Bedrock Private Well Sampling and Hydrogeological EvaluationThe validated sampling results for 19 wells sampled show that all deep bedrock private well water is clean and free of all VOCs except one hit of acetone at 16 ug/l which, however, is typically considered a common laboratory contaminant and, therefore, a result of laboratory cross contamination.