Report on Bioventing System and Well Abandonment at Sites 204.1, 228, and 510.8, Hill Air Force Base (AFB), Utah
Abstract
This letter provides a brief description of bioventing system removal and the abandonment of vent wells (VWs) and vapor monitoring points (VMPs) at Sites 204.1, 228, and 510.8 at Hill AFB, Utah. The removal and abandonment activities were performed by Parsons Engineering Science, Inc. (Parsons ES) in September 1996 as part of the Air Force Center for Environmental Excellence (AFCEE) Extended Bioventing Contract. Parsons ES installed bioventing systems at former underground storage tank (UST) Sites 204.1 and 228 in July 1992, and at Site 510.8 in August 1993. Parsons ES and Hill AFB (Base) requested no-further-action site closures for these sites from the Utah Department of Environmental Quality, Division of Environmental Response and Remediation (DERR) in July 1995. The DERR agreed that the vadose zone soils at these sites had been sufficiently remediated, and closure letters were issued by the DERR. The system removal and well abandonment effort was performed by Parsons ES as described in the letter work plan to you dated August 8, 1996, with the following exception. The abandonment of the groundwater monitoring well at Site 204.1 was not performed. This groundwater monitoring well had already been abandoned by Montgomery Watson, Inc., prior to the Parsons ES field mobilization in September 1996.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 14, 1997
- Accession Number
- ADA384208