Investigation of the 26th Street Disposal Site, Edgewood Area, Aberdeen Proving Ground, Maryland.
Abstract
A geophysical investigation was conducted at 26th Street, Edgewood Area, Aberdeen Proving Ground (APG), to delineate anomalies indicative of a fill. Electrical resistivity, magnetic, electromagnetic (EM), and ground penetrating radar (GPR) geophysical survey methods were employed to meet this objective. The investigation was carried out in the area immediately west of 26th Street and on the street. The tests were successful in delineating the lateral boundaries of the fill in a north-south, east-west direction. The electrical resistivity and GPR tests were successful in determining an approximation of the depth and thickness of the fill. The study provided several conclusions. First, the disposal material contains large amounts of iron (or ferrous material) as evidenced from the magnetometer survey. The magnetometer will only respond to ferrous objects. This conclusion is supported by the EM-31 in-phase and EM-61 data which indicates a material with a very high conductivity, which would also indicate metallic material. Second, an approximate fill depth can be determined from the GPR and resistivity data. The resistivity sounding through this area indicates a thickness of approximately 1 m. The radar profiles indicate thicknesses of 3 to 4 ft along a north-south axis. A conservative estimate of fill thickness is 5 ft. Third, the fill does not appear to extend under 26th Street. jg p55
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1995
- Accession Number
- ADA306244
Entities
People
- Janet Simms
- Michael K. Sharp