|
|
Ammunition Deflagration Facility Closure and Pad Design - US Army YPG
GCE developed a Sampling and Analysis Plan and Closure Plan to characterize and close two unlined test pits which were formerly used to test munitions at the US Army Yuma Proving Ground (YPG). The plan involved background research into the testing practices and contaminants of concern and the development of a sampling plan that would completely characterize the vertical and lateral extent of contamination. The site characterization plan was approved by ADEQ without comment. The sampling was conducted under the direction of GCE and in accordance with the approved SAP. GCE supervised the remediation of the former test pits which included the excavation and disposal of Petroleum Contaminated Soil. GCE collected confirmation samples at the bottom of the excavations. Confirmation samples confirmed that soil concentrations did not exceed non-residential Soil Remediation Levels (nrSRLs). As a result of the analytical results, the former test pits were backfilled and a Closure Report was prepared in accordance with the Aquifer Protection Permit (APP) requirements and submitted to ADEQ. The former test pits were successfully remediated and closed.
To replace the former test pits, GCE designed a new testing pad to comply with the Aquifer Protection Permit program. The design involved a geotechnical investigation, a flood study, bid documents, the preparation of construction drawings, regulatory permitting, construction inspections, materials testing, construction staking, project oversight, and preparation of the final construction report for the new testing pad. The design incorporated a concrete pad underlain by a HDPE liner system to protect the subsurface soil and groundwater from potential contamination from the testing operations.
|
|
Recent Projects
|
|
