Epa Guidance On Evaluating The Technical Impracticability Of Ground-water Restoration

摘要

The purpose of this memorandum is to transmit the OSWER Directive on evaluating the technical impracticability of ground-water restoration. This guidancernwill apply to both the RCRA Corrective Action and Superfund programs.rnRestoration of contaminated ground water is one of the primary objectives of both the Superfund and RCRA Corrective Action programs, as ground water contamination is present at over 85% of Superfund National Priorities List (NPL) sites and a large number of RCRA facilities. While both programs have had a great deal of success reducing the immediate threats posed by contaminated ground water, experience over the past decade has shown that achieving the required final cleanup standards may not be practicable at some sites due to the limitations of remediation technology. The Technical Impracticability (TI) Workgroup was formed to address the issue of how to determine whether ground-water cleanup goals are technically achievable at a particular site, and how to establish an alternative, protective cleanup strategy where restoration is determined to be technically impracticable.