Technical Impracticability for Ground Water Cleanups
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The Soil Screening Guidance (SSG) presents a framework for developing risk-based, soil screening levels (SSLs) for protection of human health. The framework provides a flexible, tiered approach to site evaluation and screening level development. The SSG focuses on a simple methodology for developing site-specific screening levels, but also includes detailed models and generic SSLs to be used where site conditions warrant. Screening levels are not national cleanup levels; instead, they are intended to be used to streamline the evaluation and cleanup of site soils by helping site managers eliminate areas, pathways and/or chemicals of concern at National Priority List sites.
"Ground Water Issue: Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures," April 1996.
OSWER Publication EPA/540/S-95/504, NTIS Order Number PB97-118822, 12p.
PDF (12 pp, 80K)
This report provides background information on the development of low-flow sampling procedures and its application under a variety of hydrogeologic settings. It is intended to support the production of standard operating procedures for use by EPA Regional personnel and other environmental professionals engaged in ground-water sampling.
"Hazard Ranking System Guidance Manual," November 1992.
OSWER Publication 9345.1-07, EPA 540-R-92-026, NTIS Order Number PB92-963377, 524p.
Available online from OSWER HTML
This guidance manual provides general and technical guidance for individuals involved in determining Hazard Ranking System (HRS) scores and preparing HRS scoring packages for proposal of sites to the National Priority List. Although it is targeted primarily to HRS scorers and package preparers, others involved in the site assessment process may find parts of the document useful. It presents strategies and specific guidance for scoring the ground water pathway in Chapter 7.Other reports:
"Ground Water Sampling -- A Workshop Summary; Dallas, Texas, November 30 - December 2, 1993."
Office of Research and Development Report EPA/600/R-94/205, 158p.
PDF (158 pp, 916K)
"Subsurface Contamination Reference Guide," October 1990.
OSWER Publication EPA/540/2-90/011, 11a, and 11b, NTIS Order Number PB91-921292, 13p. (Includes tables on 2 oversize sheets with publication numbers "11a" and "11b.")
Available online from OSWER PDF (13 pp, 302K)
The guide includes 3 large tables of contaminants commonly found at Superfund sites, their physical and chemical properties, and applicable technologies for in-situ treatment. The guide was developed to provide a source of information on fate and transport properties for a variety of contaminants commonly found in ground water at Superfund sites. The information may help to focus site investigation efforts and identify early-on potential remediation strategies.
Index of information available from the "clu-in" Web site.
Listing of issue papers, project reports and fact sheets completed by EPA's Office of Research and Development, Ground Water and Ecosystems Restoration Research Center in Ada, Oklahoma. Many of these reports focus on characterization or monitoring of contaminated ground water.
The Triad is an innovative approach to decision-making for hazardous waste site characterization and remediation. The Triad refers to three primary components, systematic planning, dynamic work strategies, and real-time measurement systems. The Triad Resource Center provides the information hazardous waste site managers and cleanup practitioners need to implement the Triad effectively.
The Ground Water Technical Support Center (GWTSC) provides support on issues regarding subsurface contamination, and works in conjunction with support centers located in other Laboratories and Divisions within the Office of Research and Development as part of the U.S. EPA Technical Support Project.