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Partial Facility Closure Plan
B-20 Detonation Area
March 1994

Table of Contents

Acronyms and Abbreviations

Section 1:  Introduction

Section 2: Site History and Background

2.1  Installation Description and History

2.2  B-20 Unit Description

2.3  Unit History

2.4  Standard Operating Procedures

2.5  Preliminary Sampling and Results

2.5.1  Preliminary Mapping

2.5.2  Sample Collection

2.5.3  Analytical Results

Surface Soil

Surface Water

Sediment

2.6  Inventory of Wastes

Section 3: Closure Procedure

3.1  Regulatory Background

3.2  Closure Performance Standard

3.3  Closure Procedure

3.3.1  Remedial Investigation

3.3.2  Baseline Risk Assessment

3.3.3  Corrective Measures Study

3.3.4  Closure Action

3.3.5  Closure Certification and Report

3.4  Closure Contingency Plan

Section 4:  Closure Investigation

4.1  Data Quality Objectives

4.2  Statistical Sampling Strategy

4.2.1  Surface Soils

4.2.2  Subsurface Soils

4.2.3  Sediment

4.2.4  Surface Water

4.2.5  Background Samples

4.3  Field Actions

4.3.1  Prescreening

4.3.2  Magnetometer Survey

4.3.3  Subsurface Drilling and Sampling

4.3.4  Verification Sampling and Analysis

4.3.5  Analytical Procedures

4.4  Data Evaluation and Reporting

4.4.1  Magnetometer Survey

4.4.2  Surface Soil Samples

4.4.3  Subsurface Soil Samples

4.4.4  Surface Water Samples

4.4.5  Miscellaneous Data

4.5  Remedial Investigation Report

Section 5:  Development of a Baseline Risk Assessment

Section 6:  Development of Corrective Measures Study

Section 7:  Implementation of Corrective Action

Section 8:  Closure Report and Certification

Section 9:  Closure Costs and Schedule

References (See Bibliography)

Appendix A:  CSSA Standard Operating Procedures at B-20 (not available electronically)

Appendix B:  RRAD Phase I Sampling and Analysis Plan

Appendix C:  Quality Assurance Project Plan for the B-20 Remedial Investigation (not available electronically)

Appendix D:  Preliminary Sampling Analytical Results (not available electronically)