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[Volume 5 Table of Contents]

Data Quality Objectives for the Groundwater Monitoring Program, Revised July 2006

Table of Contents

Introduction

Step 1 - State the Problem

1.1   Background

1.2   Planning Team

1.2.1   CSSA

1.2.2   Air Force Center for Environmental Excellence

1.2.3   Contractors

1.2.4   Decision Makers

Step 2 - Identify the Decisions

2.1   Current Decisions

2.2   Remediation Decisions

2.3   Future Decisions

2.4   Alternative Decisions

Step 3 - Identify the Inputs to the Decision

3.1   General CSSA Inputs

3.2   Off-Post Inputs

3.3   On-Post Inputs

3.4   Drinking Water Well Sampling

3.5   Existing On-Post Monitoring and Agricultural Wells

3.6   Water Levels

3.7   New Monitoring Wells

Step 4 - Define the Boundaries of the Study

4.1   Project Schedule

4.1.1   Drinking Water Reports

4.1.2   Monitoring well Reports

4.1.3   Screening Level Reports (Discrete interval, soil/rock, and IDW samples)

4.1.4   WestbayMulti-Level Sampling Device Reports

Step 5 - Develop a Decision Rule

Step 6 - Specify Tolerable Limits on Decision Errors

Step 7 - Optimize the Design for Obtaining Data

Figures

Figure 1   CSSA Monitoring Well Network, February 2006

Figure 2   VOC Action Levels

Figure 3   Proposed New Well Location Map

Figure 4   PCE Concentrations for LGR Wells, September 2005

Figure 5   TCE Concentrations for LGR Wells, September 2005

Figure 6   DCE Concentrations for LGR Wells, September 2005

Figure 7   DCE Concentrations for BS Wells, September 2005

Figure 8   PCE Concentrations for CC Wells, September 2005

Figure 9   TCE Concentrations for CC Wells, September 2005

Figure 10   DCE Concentrations for CC Wells, September 2005

Figure 11   Timeline for Groundwater Sampling

Appendices

Appendix A   Approval from USEPA and TCEQ for Previous DQOs and Implementation of LTMO Recommendations

Appendix B   Summary of Historical Detections by Well, 1999 through September 2005

Appendix C   Statistical Summary of Occurrence of Groundwater Contaminants

Appendix D   September 2003 Summary of Metals Results

Appendix E   Summary of Three-Tiered Long Term Monitoring Network Optimization

Appendix F   List of all CSSA Groundwater Monitoring Program On-Post Well Locations and the Rationale for Installation