[Home]

[Table of Contents]

AOC 66 RFI Closure Report

Section 2 - Closure Certification

2.1 - Conclusions and Recommendations

There are no records indicating that the AOC 66 area was ever used for waste disposal, nor are there any surface or subsurface indications of waste or trenches.  The site was identified as an area of concern in 1995 due only to its proximity to known contamination at well CS-MW16, not due to any records of waste management in the area, indications of ground disturbance in historic aerial photographs, nor visible evidence of waste management at the site.  The recent and previous data collected at this site suggest that the site does not contain a source of VOC contamination.  The results of this soil gas survey combined with soil gas survey results in areas adjacent to AOC 66 show that the PCE plume terminates as it approaches the southern boundary of the North Pasture.

The Soil Gas Survey indicated that PCE was detected at low levels at several locations in AOC 66, but concluded that the PCE plume terminates prior to entering AOC 66.  The concentrations of PCE detected in the soil gas were generally spotty, with more than a third of the reported detections occurring along the boundary with AOC 35.  The recent and previous data collected at this site indicate that the site does not contain a source of VOC contamination.  Because there are no wastes or waste residues, it is recommended that AOC 66 be closed under RRS1.

2.2 - Closure Certification

Partial Facility Closure Certification

Area of Concern 66

Department of the Army

Camp Stanley Storage Activity

Boerne, Texas

I certify that the above-described closure was performed under my direction, in accordance with the work plan and 30 TAC �335 Subpart S, and as described in this report, and that, to the best of my knowledge and belief, said closure has been successfully accomplished.