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AOC 46 Closure Report
Section 3 - Conclusions and Closure Certification
3.1 - Conclusions and Recommendations
Since the site contained residue of spent bullets and sand from a bullet trap, analytical samples were analyzed for metals. During excavation activities, 56 CY of contaminated soil were removed from the site. No subsurface debris or trash was encountered at the site. After excavation, confirmation sampling results for metals indicated that soil concentrations were above RRS1 criteria at one sampling location. Overexcavation and resampling was conducted at this location, which verified complete removal of contaminated soil.
Soil samples collected at AOC‑46 meet RRS1 criteria and verify that all contaminated soil has been removed from the site. It is recommended that AOC‑46 be closed under RRS1 closure and CSSA be released from the deed recordation requirement.
3.2 - Evaluation of Data Quality Objectives Attainment
Overall DQOs for the investigations at CSSA are provided in Volume 1‑1 behind the RFI Addendum tab (Section 11 of the Work Plan Overview). A detailed list of DQOs for AOC‑46, along with an evaluation of whether each DQO has been attained, is provided in Appendix C. As described in Section 1, the main objective of the AOC‑46 investigation was to meet TCEQ requirements for RRS1 closure and the requirements of the §3008(h) Administrative Consent Order.
All data generated during the AOC‑46 site closure were reviewed to confirm conformance with the AFCEE Quality Assurance Project Plan (QAPP); the data verification reports are included in Appendix D. All data are considered usable for site characterization purposes. Results flagged with a “J,” “F,” “U,” or “M” are considered useable.
3.3 - Closure Certification
Facility Closure Certification
Area of Concern-46
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.
Jason D. Shirley
April 28, 2005
LTC Jason D. Shirley
Commander, Camp Stanley Storage Activity
Date
Kirk W. Lawson
April 28, 2005
Kirk W. Lawson, P.E.
State of Texas #79204
Parsons
Date
Julie Burdey, P.G.
State of Texas #1913
Parsons
Date