Demonstration/Validation of Long-Term Monitoring Using Wells Installed by Direct Push Technologies
Technical rept. for 7 Jan 2000-4 Apr 2003
APPLIED RESEARCH ASSOCIATES INC SOUTH ROYALTON VT NEW ENGLAND DIV
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The objective of this study was to demonstrate that long-term groundwater monitoring results from direct push wells agree with those from conventionally drilled wells, the currently accepted baseline technology. Five field sites were included in the study to represent a variety of geological conditions as well as a cross-section of regulatory domains e.g. EPA regions and states. Direct push wells were installed adjacent to, and paired with existing conventional wells, drilled via hollow stem anger. The following sites were part of this effort the U.S. Army Corps of Engineers Cold Regions Research and Engineering Laboratory CRREL in Hanover, NH EPA Region 1 Dover National Test Site DNTS at Dover AFB, DE EPA Region 3 the Naval Facilities Engineering Services Center NFESC at Port Hueneme, CA EPA Region 9 Tyndall AFB, FL EPA Region 4 and Hanscom AFB, MA EPA Region 1. Five sampling runs were conducted over a fifteen month period at each site. Target groundwater chemical analytes included the following volatile organic contaminants VOCs tetrachloroethene PCE, cis-1,2-dichloroethene cis-DCE, trans-1,2-dichloroethene trans-DCE, vinyl chloride VC, benzene, toluene, ethylbenzene, o,m-xylene, p-xylene, 1,4-dichlorobenzene DCBtrichloroethane TCA, and MTBE.
- Hydrology, Limnology and Potamology
- Civil Engineering
- Water Pollution and Control