Draft Superfund Groundwater Remedy Completion 超级地下水补救完成草案.pptxVIP

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Draft Superfund Groundwater Remedy Completion 超级地下水补救完成草案.pptx

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November 4, 2014 Anne Dailey, Kate Garufi and Dave Bartenfelder US EPA, Office of Superfund Remediation and Technology Innovation Overview of New EPA Superfund Groundwater Guidance and Tools Presentation Topics Background/Context Groundwater Remedy Completion Strategy Technical Impracticability (TI) Waivers Contacts and Information Sources Upcoming Webinar 2 Importance of Groundwater Protection of water, including groundwater, is one of EPA Administrator McCarthy’s 7 priorities Collectively hundreds of millions of dollars are spent annually to address groundwater contamination EPA spends ~$30-50 million/year on the operation of long-term response actions for the first 10 years of restoration actions at Fund-lead sites 3 4 Nearly 90 percent of Current Superfund National Priority List (NPL) Sites have Groundwater Remedies* *Includes 1,137 NPL sites with at least one decision document. CERCLIS data as of December 2012. Deleted sites and some FY12 decision documents not included. From: EPA 2013, Superfund Remedy Report. Superfund Groundwater Cleanup Expectations* Restore to beneficial use wherever practicable Define and contain the plume Early actions as soon as possible Institutional controls should not be the only response If restoration not technically practicable – Technical Impracticability Waiver * Summarized in EPA, 2009, Key Existing EPA CERCLA Policies for Groundwater Restoration (OSWER Directive 9283.1-33). 5 Progress in Groundwater Cleanups Many Superfund groundwater remedies have met remedial action objectives (RAOs) At many sites, where RAOs have not been achieved, significant progress has been made Technologies and strategies have evolved over time Upcoming EPA report will provide examples (Source: EPA, Internal Draft. Examples of Achievement and Progress Toward Remedial Action Objectives at NPL Sites.) 6 Groundwater Cleanup Trends Decrease in sites selecting groundwater pump treat Increase in sites selecting in situ treatment Multiple cleanup