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| April 25, 2024 | ||
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Office of Research and Development |
The training seminar will present a systematic approach for the evaluation of capture zones generated by pump and treat systems, and will introduce the new guidance document on the topic developed by the EPA Office of Research and Development. The training will also discuss the importance of capture zone analysis during ground water remediation, particularly for sites requiring hydraulic containment. The use of "converging lines of evidence" and the iterative nature of the systematic approach will be explained. Six steps associated with this systematic approach for capture zone analysis are proposed.
These steps include the following:
- Step 1: Review site data, site conceptual model, and remedy goals
- Step 2: Define site-specific Target Capture Zone(s)
- Step 3: Interpret water levels
- Step 4: Perform appropriate calculations (flow budget calculation, capture zone width calculation and/or modeling)
- Step 5: Evaluate concentration trends at monitoring wells (and potentially tracer tests)
- Step 6: Interpret actual capture and compare to Target Capture Zone(s), assess uncertainties and data gaps
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Denver, CO 