As of September 2008 in the site's latest Five-Year-Review Report, the US EPA raised concerns that the current leachate system is not catching all contaminates, and that contaminants may be migrating off site either into the Unnamed brook that runs behind Andrew Avenue School, or into the bedrock and discharging into groundwater. Groundwater flows northwest and south from the site. The main cause for concern would be residences on Hunters Mountain that are not hooked up to the public water line.