Aerial radiological survey of the area surrounding the New England Nuclear Corporation Facility, Billerica, Massachusetts. Date of survey: August 1979

An aerial radiological survey to measure terrestrial gamma radiation was carried out over the New England Nuclear Corporation facility located in Billerica, Massachusetts. Gamma ray data were collected over a 2.8 km2 area centered on the facility by flying north-south lines spaced 60 m apart. Processed data indicated that detected radioisotopes and their associated gamma ray exposure rates were consistent with those expected from normal background emitters, except at certain locations described in this report. Average exposure rates 1 m above the ground, as calculated from the aerial data, are presented in the form of an isopleth map. No ground sample data were taken at the time of the aerial survey