Environmental geophysics of the Pilot Plant on the west branch of Canal Creek, Aberdeen Proving Ground, Maryland

Abstract

DE5?R!f3JTlQN OF THIS BQCUMENT I S UNLIMITED DISCLAIMER This report was .prepared as a n account of work sponsored by an agency of t h e United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, express or implied, or assumes a n y legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by t h e United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of t h e United States Government or any agency thereof. DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. Preface This report presents the final results and conclusions drawn from geophysical studies begun in November 1993, information vital to administrative and technical staff responsible for environmental planning and remediation at the Pilot Plant. Two technologies, not listed in the work plan, were added to the study to improve diagnostic interpretations, and two were removed because they were deemed unnecessarily redundant. The two technologies added are (1) bistatic ground-penetrating radar, which was used for interpreting site stratigraphy and detecting of paleochannels, and (2) EM61, which was used for detecting metallic objects buried close to metal buildings. The technologies deleted are seismic and resistivity sounding. Staff at Aberdeen Proving Ground, Directorate of Safety, Health, and Environment, and Argonne National Laboratory guided the work scope and its objectives.

Environmental geophysics at Kings Creek Disposal Site and 30th Street Landfill, Aberdeen Proving Ground, Maryland

“…On the basis of observations at the Kings Creek study area and studies conducted in other portions of the Edgewood Area, including Beach Point (McGinnis et al. 1994a) and Canal Creek (Lorah andMcGinnis et al 1994b), it is evident that a well-integrated…”

Phase II environmental geophysics at J-Field, Aberdeen Proving Ground, Maryland

“…The depth of erosion of the Cretaceous deposits indicates that a major stream channel, such as an ancestral Susquehanna River channel, was located beneath J-Field (Hughes 1993). Pleistocene erosional channels in Cretaceous sediments have been observed elsewhere within the Edgewood Area of APG (Oliveros and Vroblesky 1989;McGinnis et al 1994a; Davies et al 1995) and are common features of the Chesapeake Bay region (Kerhin et al 1988;Colman et al 1990). …”

Environmental geophysics, offshore Bush River Peninsula, Aberdeen Proving Ground, Maryland

“…From observations at the BRP study area and from studies elsewhere in the Edgewood Area, including Beach Point (McGinnis et al 1994) and Canal Creek (Lorah andMcGinnis et al 1994b), it is evident that a tributary system of Pleistocene-age was locally incised into Potomac Group sediments. Paleochannel fill sequences provide the conduit for shallow groundwater flow beneath the Bush River, and these sequences permit juxtaposition with Potomac Group aquifers for local recharge.…”