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Performance Evaluation / Close-Out of Ground Water Cleanups

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"Elements for Effective Management of Operating Pump and Treat Systems," November 2002. OSWER 9355.4-27FS-A.
Available on-line from OSWER PDF (22pp, 547K)

Summarizes key aspects of effective management for operating ground water pump and treat systems, based on lessons learned from conducting remedy optimization evaluations at 20 Superfund sites. Includes discussion of setting system goals and evaluating cleanup progress, as well as evaluating remedy performance and cost effectiveness.

"Methods for Monitoring Pump-and-Treat Performance," June 1994.
Office of Research and Development Publication EPA/600/R-94/123, NTIS Order Number PB95-125456.
Available on-line from OSWER:
Part 1 - Introduction and Monitoring Hydraulic Containment
PDF (48 pp, 2.6MB)
Part 2 - Monitoring Acquifer Restoration, Evaluating Restoration Success/Closure, Chem-Dyne Site Case Study, and References
PDF (63 pp, 1.6MB)

This publication provides guidance for monitoring the effectiveness and efficiency of pump-and-treat remediation systems, with emphasis on the "pump" part of the technology rather than chemical enhancements. The report includes sections on monitoring hydraulic containment, monitoring ground-water restoration, evaluating restoration success/closure, a case study, and references. It includes performance criteria, monitoring objectives, and protocols for evaluating effectiveness of containment and restoration systems.

"Methods for Evaluating the Attainment of Cleanup Standards, Vol. 2: Ground Water," July 1992.
Office of Policy, Planning, and Evaluation Publication EPA/230-R-92-014

Note: This is a very large document that may take several minutes to download.
PDF (363 pp, 5MB)

This document provides site managers and their contractors with statistical methods for evaluating whether ground water remediation has met pre-established cleanup standards for one or more chemical contaminants at a hazardous waste site. The statistical methods allow for decision making under uncertainty and permit valid extrapolation of information that can be defended and used with confidence to determine whether the site meets the cleanup standard. This document, the second in a series, provides sampling and data analysis methods for the purpose of verifying attainment of a cleanup standard in ground water. The first volume addressed evaluating attainment in soils and solid media.

"General Methods for Remedial Operation Performance Evaluations" January 1992.
Robert S. Kerr Environmental Research Laboratory (now National Risk Management Research Laboratory--NRMRL), Ada, Oklahoma, Publication EPA/600/R-92/002, NTIS Order Number PB92-166842
Available on-line from NRMRL PDF (45 pp, 232K)

This research report explains technical considerations and principles necessary to evaluate the performance of ground water contamination remediations at hazardous waste sites. It presents generic principles for formulating site-specific evaluation strategies. (It is not a "cookbook".) It emphasizes the development of monitoring stategies which ensure that sampling locations and schedules are meaningful, and to the use of data reduction, presentation and interpretation techniques.

See also:

"Close Out Procedures for National Priorities List Sites," January 2000.
OSWER Directive 9320.2-09A-P, 45p. plus another 85p. of appendices.
Available on-line from OSWER HTML

This guidance document describes the key principles and expectations that should be consulted at the time to Close Out Superfund's National Priorities List Sites. The Close Out Procedures for National Priorities List Sites are organized into five principal areas: Remedial Action Completion, Construction Completion, Site Completion, Site Deletion and Partial Deletion. The purpose of the guidance is to briefly summarize key elements of the various close out options for actions at sites.

 

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