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HomeMy WebLinkAboutHDR - CAP Part 2 Cover and TOC_DRAFTCorrective Action Plan Part 2 Ash Basin Site Name Here Site Location: NPDES Permit No Permittee and Current Property Owner: Consultant Information Report Date: Site Name Street Address City, ST ZIP TBD Duke Energy Carolinas, LLC 526 South Church St Charlotte, NC 28202 704.382.3853 HDR Engineering, Inc. of the Carolinas 440 South Church St, Suite 900 Charlotte, NC 28202 704.338.6700 TBD This page intentionally left blank Corrective Action Plan Part 2 Ash Basin Site Name Here Contents Executive Summary 1 Introduction 2 Summary of Previous and Current Studies 2.1 Comprehensive Site Assessment 2.2 Corrective Action Plan Part 1 2.3 Second Round Sampling 2.3.1 Groundwater 2.3.1.1 Groundwater Flow Conditions 2.3.1.2 Groundwater Sampling Procedures 2.3.1.3 Groundwater Lab Results 2.3.2 Surface Water/Seeps 3 Updated Modeling 3.1 Groundwater Model Refinement 3.1.1 Flow Model Refinements 3.1.2 Fate and Transport Model Refinements 3.2 Surface Water Model 3.3 Geochemical Modeling 4 Refined Site Conceptual Model 4.1 Summary of Refined Groundwater Model 4.2 Summary of Refined Surface Water Model 4.3 Summary of Geochemical Model 5 Risk Assessment 6 Alternative Methods for Achieving Restoration 6.1 Corrective Action Decision Process 6.1.1 Evaluation Criteria 6.1.2 Potential Exposure Routes and Receptors 6.2 Alternative Evaluation Criteria 6.2.1 Effectiveness 6.2.2 Implementability/Feasibility 6.2.3 Environmental Sustainability 6.2.4 Cost 6.2.5 Stakeholder Acceptance 6.3 Remedial Alternatives to Achieve Regulatory Standards 6.3.1 Groundwater Remediation Alternatives 6.3.2 Monitored Natural Attenuation Applicability to Site 6.3.3 Site -Specific Alternatives Analysis 6.3.4 Site -Specific Recommended Approach 7 Selected Corrective Action(s) 8 Recommended Interim Activities 9 Monitoring Plan 10 Implementation Cost and Schedule 11 References .M :M Tables Figures Appendices A — Groundwater Model Refinement Report B — Surface Water Model Report C — Geochemical Modeling Report D — Risk Assessment Report E — Alternative Methods for Achieving Restoration Report F — Monitored Natural Attenuation Report Acronyms and Abbreviations III -ID] Corrective Action Plan Part 2 Ash Basin Site Name Here