Technical Basis for Incorporating Ground Water Quality Data Collected from Direct-Push Wells into Evaluation and Monitoring Programs for Natural Attenuation Remedies
Final technical rept. Oct 2001-Sep 2004
PARSONS DENVER CO
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This study evaluates whether monitoring wells installed using direct-push techniques DPT provide ground water chemical data of comparable quality to conventionally-installed wells for evaluation and performance monitoring of monitored natural attenuation MNA of dissolved volatile organic compounds VOCs. Data evaluation methods included statistical and qualitative analyses performed on existing data sets from multiple United States Air Force facilities. Study results provide strong evidence that DPT and conventional wells can be used interchangeably for monitoring MNA of chloroethenes and evaluating local redox conditions. Results are inconclusive on the interchangeable use of DPT and conventional wells for MNA monitoring of dissolved petroleum hydrocarbons, as petroleum hydrocarbon concentrations in DPT wells generally were observed to be higher than concentrations measured in conventional wells. The findings of this study are relevant to monitoring activities at Department of Defense facilities because DPT techniques may allow faster and less expensive well installation, relative to conventional techniques, at shallow 50-foot and, in some lithologies, intermediate 50- to 100-foot depths.
- Fluid Mechanics
- Water Pollution and Control