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HSRA Rule Change Reflect changes in scientific understanding since 1994 Provide Consistency in Cleanup Standards Reduce risk from contaminated sites Correct.

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Presentation on theme: "HSRA Rule Change Reflect changes in scientific understanding since 1994 Provide Consistency in Cleanup Standards Reduce risk from contaminated sites Correct."— Presentation transcript:

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2 HSRA Rule Change Reflect changes in scientific understanding since 1994 Provide Consistency in Cleanup Standards Reduce risk from contaminated sites Correct values in the current lookup tables Set easily calculated default cleanup standards (Type 1 and 3) Provide additional flexibility for specific site conditions (Type 2 and 4)

3 RuleMaking Team Jeff Cown – Fmr. LPB Chief
Sarah Visser – LPB Assistant Chief Beth Blalock – Fmr. LPB Asst Chief Jason Metzger – RRP Manager Shanna Alexander – Fmr. RAU Mgr. Amy Potter, David Hayes, David Brownlee, Kevin Collins Focused Stakeholder Group Technical Risk Work Group

4 General Changes Minor changes and clarifications in:
Rule “Conventions” new abbreviations. Rule “Release Notification” clarify the soil notification requirement exclusion for Brownfield properties. Rule “Corrective Action” removal actions under the NCP may comply with Type 5 cleanup standards. Rule “Property Notices” consistency with HSRA wording and to recognize continuing obligations.

5 RRS Changes – Flexibility
Rule “Risk Reduction Standards” All RRS provide adequate protection of HH&E Use of soil area-averaging (site-specific) Use of soil composite sampling (site-specific) Provides for default non-residential groundwater standards Use of covenants for Type 4 (non-residential) groundwater compliance Consideration of anthropogenic sources and background studies Accounts for migration risk in determining free-product removal requirements Redefine default ‘surface’ soil as top one foot

6 Direct Contact Calculations
Updated RAGS Equations 1, 2, 6, and 7 Consistent with EPA Regional Screening Level equations Incorporate age-dependent adjustment factors Site-specific soil bioavailability in calculations Allows use of chemical surrogates Added language regarding toxicity and chemical-specific parameter hierarchy Updated volatization and PEF equations Incorporated subsurface exposure for non-resident Replaced GALM with EPA Adult Lead Model

7 LeachinG Calculations
Type 1/3 Leaching Calculations - Replaced GW *100 value with default partitioning equation Appendix III, Table 4 Type 2/4 - Use of existing groundwater data to show soils are protective

8 Interim RRS Guidance

9 Guidance Development Demonstrating Completion of Soil Removal Actions
Environmental Covenant Guidance / Template FAQs for Evaluating the Soil-to-Groundwater Pathway Area Averaging Approach to Soil Compliance Vapor Intrusion Georgia Risk Assessment Guidance

10 Leaching and Area Averaging
Drafts published 10/24/18 Comment period extended Comments from GIEC, GBA, Ashland, SCS Leaching Status Clarification/discussion meetings April/May Revised draft late May Area Averaging Status Extensive comments Clarification/discussion meetings May/June Revised draft and potential stakeholder meeting

11 VI technical advisory com.
Leverage External Technical Expertise 2 EPD representatives and 8 external Kick-off Meeting 1/22/19 Monthly meetings for 6-month period Sub-groups Issue draft guidance document Engage in public review process

12 Voluntary Remediation Unit
Purpose: Administer the Voluntary Remediation Program (VRP) in an objective, consistent, and timely manner, in accordance with the VRP Act.

13 Why enroll in the VRP? More flexible framework to meet compliance obligations Update compliance status Make property “Brownfield Ready” Make sure cleanup meets all Brownfield requirements (source material, use of controls) Defer HSI listing (case-by-case basis) Framework for EPD concurrence with investigation / cleanup that is not otherwise regulated

14 VRP and the hazardous site inventory
VRP Applications: % on HSI HSI Delistings in Last 3 Years

15 On the Horizon Finalize Leaching and Area Averaging Guidance
Vapor Intrusion Technical Advisory Committee Georgia Risk Assessment Guidance GEOS / LEMIR Enhancements Notification digitization Future Rule Changes PFAS / PFOA?

16 Jason Metzger Response and Remediation Program Manager jmetzger@gaepd
Jason Metzger Response and Remediation Program Manager


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