|
HWAAP-A05
MUSTARD GAS DISPOSAL AREA
SITE DESCRIPTION
HWAAP-A05 is a site operated from 1940 to 1946 to dispose of munitions containing mustard and other chemical agents including phosgene and cyanogen  chloride. The general procedure for disposal was to treat the chemicals in an open trench and backfill the excavation to grade. The site was investigated in 1981 and in 1988 by test pits and geophysical surveys to identify disposal areas. Sixty-three soil samples collected from the test pits were analyzed and found no detections of the chemicals of concern. Remedial Investigation activities completed in 1994 included airborne ground penetrating radar over 345 acres, 1350 feet of refraction seismic and 510 feet of reflection seismic surveys to further delineate the former disposal trenches. There is no evidence that the contaminants at the site are migrating.
The exposure potential was addressed by the controls placed on the SWMU A05 perimeter fencing and an 18-acre interior security fence around the central disposal area. Additional land use restrictions consist of no surface or subsurface activities within the interior security fence and all other activities conducted in the remaining portion of SWMU A05 require HWAD Government Environment Office review and approval.
PROPOSED PLAN
A Closure Decision Document was approved by the NDEP in December 2001.
Decision Document
 Previous Site Summary  Next Site Summary
IRP Home Page
Table of Contents -- IRP Site Summaries
NDEP - Site Map
|
