Geophysical and Chemical Investigations of Ground Water at Five Industrial or Waste-Disposal Sites in Logan Township, Gloucester County, New Jersey, 1983-87

摘要

The report describes the use of electromagnetic-conductivity (EM) and ground-water-quality data at available wells to determine the presence of contaminant plumes at the five industrial or waste-disposal sites, to delineate the lateral and vertical extent of any plumes in the aquifer system, and to document the inorganic and organic constituents present in the plumes. EM surveys were used to locate probable shallow ground-water-contamination plumes (less than 30 ft (feet) below land surface). Ground-water samples were collected to identify the inorganic and organic constituents present in plumes delineated by geophysical methods and in ground water elsewhere at each site, and to test the reliability of the geophysical methods in detecting plumes of contaminated ground water. EM data were collected at 850 stations from September 1983 through January 1984 at the Air Products and Chemicals, Inc., waste-disposal site; BROS; Chemical Leaman; Monsanto; and property north of Rollins. The Rollins property was not accessible for conducting EM surveys. Ambient ground-water quality was determined by analyzing samples from 20 wells in Logan Township that are not in areas of ground-water contamination; results of these analyses are summarized in the report.