Class Details

Come hear the latest from EPA's Office of Research and Development (ORD) on the topic of ground water pump and treat system capture zone analysis. This seminar is intended for RCRA and CERCLA project managers and hydrogeologists and others who work on contaminated ground water sites with active pump and treat systems or sites where such systems are in the design phase. The day will consist of two sessions: a morning session from 9:00 am till 12 noon and then an afternoon session from 1:00 pm till 4:00 p.m.

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

Prior registration is required to attend the training. Although registration is open to contractors, federal and state government personnel will have first priority.

Arrangements for hotel accommodations, if needed, are the responsibility of individual participants.