Appendix E
Examples of Information Required for Two Types of Final Closure Survey Reports

As JACADS solid waste management units (SWMUs) are remediated, samples will have to be collected, identified, and analyzed to determine if EPA-approved closure end points have been met. The complete list of contaminants that will be evaluated should be included in the RCRA Facility Investigation (RFI) Sampling and Analysis Plan and the final sampling results presented to EPA in a RCRA Facility Investigation report. Box E-1 typifies a table of contents from a report on an industrial facility RFI postclosure. It can be used as a guide during the development and preparation of the postclosure report for the JACADS facility or any other Army chemical agent disposal facility.

As specific areas are remediated during facility closeout, it may be desirable to obtain conditional EPA acceptance of these areas. Box E-2 typifies a table of contents from an Interim Remedial Measures Report for an industrial facility. It lists the areas covered in the report for documenting that contaminant levels were below EPA standards for soil and groundwater following the cleanup effort.

BOX E-1 Typical Contents Page for RFI Facility Investigations

RFI FACILITY INVESTIGATION TABLE OF CONTENTS FINAL CLOSURE SURVEY REPORT

 

Contents

ABSTRACT

13

DISCLAIMER

14

EXECUTIVE SUMMARY

ES-1

I.

INTRODUCTION

 

1.1

OVERVIEW

1-1

1.2

BACKGROUND

1-1

 

1.2.1

History of the Facility

1-1

1.2.2

History of the Project

1-1

1.2.3

History and Phases of the Stabilization Program

1-2

1.3

OBJECTIVES OF STABILITIZATION

1-3

 

1.3.1

Objectives of the Stabilization Program

1-3

1.3.2

Objectives and Scope of the Investigation Phase

1-3

1.3.3

Objectives and Scope of the Design Phase

1-3

1.3.4

Objectives and Scope of the Implementation Phase

1-4

1.3.5

Assumptions in the Investigation Phase

1-4



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Closure and Johnston Atoll Chemical Agent Disposal System Appendix E Examples of Information Required for Two Types of Final Closure Survey Reports As JACADS solid waste management units (SWMUs) are remediated, samples will have to be collected, identified, and analyzed to determine if EPA-approved closure end points have been met. The complete list of contaminants that will be evaluated should be included in the RCRA Facility Investigation (RFI) Sampling and Analysis Plan and the final sampling results presented to EPA in a RCRA Facility Investigation report. Box E-1 typifies a table of contents from a report on an industrial facility RFI postclosure. It can be used as a guide during the development and preparation of the postclosure report for the JACADS facility or any other Army chemical agent disposal facility. As specific areas are remediated during facility closeout, it may be desirable to obtain conditional EPA acceptance of these areas. Box E-2 typifies a table of contents from an Interim Remedial Measures Report for an industrial facility. It lists the areas covered in the report for documenting that contaminant levels were below EPA standards for soil and groundwater following the cleanup effort. BOX E-1 Typical Contents Page for RFI Facility Investigations RFI FACILITY INVESTIGATION TABLE OF CONTENTS FINAL CLOSURE SURVEY REPORT   Contents ABSTRACT 13 DISCLAIMER 14 EXECUTIVE SUMMARY ES-1 I. INTRODUCTION   1.1 OVERVIEW 1-1 1.2 BACKGROUND 1-1   1.2.1 History of the Facility 1-1 1.2.2 History of the Project 1-1 1.2.3 History and Phases of the Stabilization Program 1-2 1.3 OBJECTIVES OF STABILITIZATION 1-3   1.3.1 Objectives of the Stabilization Program 1-3 1.3.2 Objectives and Scope of the Investigation Phase 1-3 1.3.3 Objectives and Scope of the Design Phase 1-3 1.3.4 Objectives and Scope of the Implementation Phase 1-4 1.3.5 Assumptions in the Investigation Phase 1-4

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Closure and Johnston Atoll Chemical Agent Disposal System   1.4 KEY TO PHASE II ACTIVITIES IN STABILIZATION 1-5   1.4.1 Description of the Tables 1-5 1.4.2 Summary of the Phase II Activities in Stabilization 1-6 1.5 ORGANIZATION OF THIS DOCUMENT 1-6 1.6 SUMMARY 2. PRODUCTION AREA GROUNDWATER: AQUIFER TESTING   2.1 OVERVIEW 2-1 2.2 PHASE I RESULTS AND DATA GAPS 2-1   2.2.1 Phase I Results 2-1 2.2.2 Phase I Data Gaps 2-2 2.3 OBJECTIVES AND STRATEGY FOR AQUIFER TESTING 2-2   2.3.1 Objectives of Aquifer Testing 2-2 2.3.2 Strategy for Aquifer Testing 2-3 2.4 PRELIMINARY ACTIVITIES: METHODS AND ANALYSES 2-3   2.4.1 Installing and Developing Wells and Piezometers 2-4 2.4.2 Performing Groundwater Sampling 2-6 2.4.3 Measuring Water Levels 2-7 2.5 PRELIMINARY ACTIVITIES: RESULTS 2-7   2.5.1 Production Area Stratigraphy 2-8 2.5.2 Groundwater Sampling Results 2-11 2.5.3 Water Level Measurement Results 2-14 2.6 STEP-DRAWDOWN TESTS 2-17   2.6.1 Objectives 2-18 2.6.2 Methods and Analyses for the Step-Drawdown Tests 2-18 2.6.3 Results and Discussion of the Step-Drawdown Tests 2-19 2.7 72-HOUR CONSTANT RATE TESTS 2-20   2.7.1 Objectives 2-20 2.7.2 Methods and Analyses for the 72-Hour Constant Rate Tests 2-20 2.7.3 Results and Discussion of the 72-Hour Constant Rate Tests 2-21 2.8 30-DAY CONSTANT RATE TEST 2-22   2.8.1 Objectives 2-22 2.8.2 Methods and Analyses for the 30-Day Constant Rate Test 2-23 2.8.3 Results and Discussion of the 30-Day Constant Rate Test 2-24 2.9 ADDITIONAL SINGLE-WELL CONSTANT RATE AQUIFER TESTS 2-26   2.9.1 Objectives 2-27 2.9.2 Methods and Analyses for the Additional Constant Rate Tests 2-27 2.9.3 Results and Discussion of the Additional Constant Rate Tests 2-29 2.10 30-DAY FLUSH/SURGE TEST 2-31 2.11 GENERAL DISCUSSION 2-32 2.12 SELECTION OF THE STABILIZATION MEASURE 2-33 2.13 SUMMARY 2-33 3. PRODUCTION AREA GROUNDWATER; TREATABILITY TESTING   3.1 OVERVIEW 3-1

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Closure and Johnston Atoll Chemical Agent Disposal System   3.2 PHASE I RESULTS AND DATA GAPS 3-1   3.2.1 Phase I Results 3-1 3.2.2 Phase I Data Gaps 3-2 3.3 DISCHARGE LIMITATIONS AND REMOVAL EFFICIENCIES 3-2   3.3.1 Discharge Limitations for Groundwater 3-2 3.3.2 Phase I Results, Discharge Limitations, and Removal Efficiencies 3-3 3.3.3 Overview of the Conceptual Design of the Pretreatment Technology 3-3 3.4 BENCH-SCALE PRETREATMENT TESTING PROGRAM 3-4   3.4.1 Objectives and Strategy for Bench-Scale Testing 3-4 3.4.2 Assumptions for Bench-Scale Testing 3-5 3.4.3 Methods and Analyses for Bench-Scale Testing 3-5 3.4.4 Results of Bench-Scale Testing 3-7 3.5 PILOT PRETREATMENT TESTING PROGRAM 3-8   3.5.1 Objectives and Strategy for Pilot Testing 3-9 3.5.2 Estimates and Assumptions for Pilot Testing 3-10 3.5.3 Process Sequence and Performance Standards for Pilot Testing 3-10 3.5.4 Methods and Analyses for Pilot Testing 3-10 3.5.5 Results of Pilot Testing 3-13 3.6 GENERAL DISCUSSION 3-13 3.7 SELECTION OF THE STABILIZATION MEASURE 3-14 3.8 SUMMARY 3-15 4. SWMU-11 SOIL AND GROUNDWATER; HIVAC EXTRACTION PILOT TEST   4.1 OVERVIEW 4-1 4.2 PREVIOUS RESULTS AND DATA GAPS 4-1   4.2.1 Phase I and Soil Gas Survey Results 4-1 4.2.2 Other Considerations of HIVAC Dual-Phase Technology 4-2 4.2.3 Remaining Data Gaps 4-2 4.3 HIVAC PILOT TEST 4-2   4.3.1 Objectives and Strategy for HIVAC Pilot Testing 4-3 4.3.2 Assumptions and Performance Standards for HIVAC Pilot Testing 4-4 4.3.3 Preliminary Activities for HIVAC Pilot Testing 4-4 4.3.4 Methods and Analyses for HIVAC Pilot Testing 4-7 4.3.5 Results of HIVAC Pilot Testing 4-8 4.4 GENERAL DISCUSSION 4-10 4.5 SELECTION OF THE STABILIZATION MEASURE 4-11 4.6 SUMMARY 4-12 5. CONCEPTUAL DESIGN PROPOSAL   5.1 OVERVIEW 5-1 5.2 CONCEPTUAL DESIGN: GROUNDWATER CAPTURE SYSTEM 5-1   5.2.1 Strategy and Basis for the Conceptual Design 5-2 5.2.2 Conceptual Design Criteria and Performance Standards 5-2 5.2.3 Conceptual Design for the Groundwater Capture System 5-3 5.2.4 Modeling and Testing the Conceptual Design 5-4 5.2.5 Preliminary Plans for Performance Monitoring and Confirmatory Sampling 5-6

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Closure and Johnston Atoll Chemical Agent Disposal System   5.3 CONCEPTUAL DESIGN: GROUNDWATER PRETREATMENT SYSTEM 5-7   5.3.1 Strategy and Basis for the Conceptual Design 5-7 5.3.2 Conceptual Design Criteria and Performance Standards 5-8 5.3.3 Conceptual Design for the Groundwater Pretreatment System 5-8 5.3.4 Preliminary Plans for Performance Monitoring and Confirmatory Sampling 5-12 5.4 CONCEPTUAL DESIGN: SOIL VAPOR EXTRACTION (SVE) SYSTEM 5-13   5.4.1 Strategy and Basis for the Conceptual Design 5-13 5.4.2 Conceptual Design Criteria and Performance Standards 5-13 5.4.3 Conceptual Design for the Soil Vapor Extraction System 5-14 5.4.4 Preliminary Plans for Performance Monitoring and Confirmatory Sampling 5-16 5.5 CONCEPTUAL DESIGN: OVERALL STABILIZATION SYSTEM 5-18 5.6 SUMMARY 5-19 6. PROJECT MANAGEMENT   6.1 OVERVIEW 6-1 6.2 PROJECT ORGANIZATION 6-1 6.3 SCHEDULE 6-1   6.3.1 Design Phase 6-1 6.3.2 Implementation Phase 6-3 6.3.3 Stabilization Program Report Preparation 6-3 6.4 CONTINGENCIES AND CONSIDERATIONS 6-4   6.4.1 Contingencies and Planned Responses 6-4 6.4.2 Critical Success Factors 6-6 6.5 SUMMARY 6-7 LIMITATIONS REFERENCES APPENDICES APPENDIX A—GLOSSARY APPENDIX B—BORING LOGS APPENDIX C—WELL INSTALLATION/CONSTRUCTION LOGS APPENDIX D—GEOTECHNICAL DATA APPENDIX E—WELL SAMPLING LOGS APPENDIX F—WATER LEVEL MEASUREMENTS APPENDIX G—PRECIPITATION DATA APPENDIX H—STEP-DRAWDOWN TEST DATA AND ANALYSES APPENDIX I—72-HOUR CONSTANT RATE TEST DATA AND ANALYSES APPENDIX J—30-DAY CONSTANT RATE TEST DATA AND ANALYSES APPENDIX K—ADDITIONAL CONSTANT RATE TEST DATA AND ANALYSES APPENDIX L—CAPTURE ZONE MODELING APPENDIX M—INDUSTRIAL WASTEWATER PERMIT NO. XXXX APPENDIX N—BENCH-SCALE TREATABILITY TESTING: LABORATORY REPORT APPENDIX O—ANALYTICAL DATA APPENDIX P—PRELIMINARY ENGINEERING CALCULATIONS

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Closure and Johnston Atoll Chemical Agent Disposal System BOX E-2 Typical Contents Page for Interim Remedial Measures Report INTERIM REMEDIAL MEASURES REPORT TABLE OF CONTENTS FINAL CLOSURE SURVEY REPORT Section Page 1.0 INTRODUCTION 1-1   1.1 OVERVIEW 1-1 1.2 BACKGROUND 1-1 1.3 OBJECTIVES 1-2 2.0 PRODUCTION AREA “A” EXCAVATION ACTIVITIES 2-1   2.1 PRELIMINARY TASKS 2-1   2.1.1 Proposed Media Protection Standards (MPS) 2-1 2.1.2 Identifying Areas of Excavation 2-1 2.1.3 Permitting 2-1 2.1.4 Waste Classification 2-2 2.2 PROPOSED ACTIVITIES 2-2   2.2.1 Approach 2-2 2.2.2 Sampling Protocol 2-3 2.2.3 Sample Labeling 2-3 2.2.4 Compliance Criteria 2-4 2.3 EXCAVATION OVERVIEW 2-5   2.3.1 Phase I 2-5   2.3.1.1 Excavation 2-5 2.3.1.2 Post-Excavation Sampling 2-5 2.3.1.3 Post-Excavation Sample Results 2-6 2.3.1.4 Evaluation 2-6 2.3.2 Phase II 2-6   2.3.2.1 Excavation 2-6 2.3.2.2 Post-Excavation Sampling 2-7 2.3.2.3 Post-Excavation Sample Results 2-7 2.3.2.4 Evaluation 2-7 2.3.2 Phase II 2-6   2.3.2.1 Excavation 2-6 2.3.2.2 Post-Excavation Sampling 2-7 2.3.2.3 Post-Excavation Sample Results 2-7 2.3.2.4 Evaluation 2-7 2.3.3 Phase III 2-8   2.3.3.1 Excavation 2-8 2.3.3.2 Post-Excavation Sampling 2-8 2.3.3.3 Post-Excavation Sample Results 2-8 2.3.3.4 Evaluation 2-9 2.3.4 Phase IV 2-9   2.3.4.1 Delineation Sampling 2-9 2.3.4.2 Delineation Sampling Results 2-9 2.3.4.3 Excavation 2-9 2.3.4.4 Evaluation 2-10 2.3.5 Transport and Disposal 2-10 2.4 PRODUCTION AREA “A” CONCLUSIONS 2-10 3.0 AREA “B” EXCAVATION ACTIVITIES 3-1   3.1 PRELIMINARY TASKS 3-1   3.1.1 Proposed Media Protection Standards (MPS) 3-1 3.1.2 Identifying Areas of Excavation 3-1 3.1.3 Permitting 3-1 3.1.4 Waste Classification 3-2

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Closure and Johnston Atoll Chemical Agent Disposal System   3.2 PROPOSED ACTIVITIES 3-2   3.2.1 Approach 3-3 3.2.2 Sampling Protocol 3-4 3.2.3 Sampling Labeling 3-4 3.2.4 Compliance Criteria 3-4 3.3 EXCAVATION OVERVIEW 3-5   3.3.1 Phase I 3-6   3.3.1.1 Excavation 3-6 3.3.1.2 Post-Excavation Sampling 3-6 3.3.1.3 Post-Excavation Sample Results 3-6 3.3.1.4 Evaluation 3-6 3.3.2 Phase II 3-7   3.3.2.1 Delineation Sampling 3-7 3.3.2.2 Delineation Sampling Results 3-7 3.3.2.3 Evaluation 3-7 3.3.2.4 Excavation 3-8 3.3.3 Transportation and Disposal 3-8 3.4 AREA “B” CONCLUSIONS 3-8