Did the remedial investigation identify any off-site contamination in the area surrounding NFSS?
Three areas of off-site contamination were identified and evaluated during the remedial investigation of the NFSS. What the investigation found and the risks associated with what was found are listed below: • National Grid Property (electrical transmission power-line right of way): This property, located to the west of the NFSS, is prone to trespassers, hunters, all-terrain vehicle riders, and others. During the 2001 site-wide gamma walkover survey of the NFSS property, gamma radiation in surface soil above background was detected on the western border of the NFSS property adjacent to the National Grid property. The Corps continued the gamma walkover survey from the NFSS fenceline westerly into the west ditch on National Grid property. A strip of ground, including the ditch, approximately 60 feet x 820 feet was surveyed. Several isolated spots in this area displayed elevated radioactivity two to three times the natural background level of approximately 9,000 to 13,000 counts per minute
