Section 1 - Overview

1.1   Purpose of Report

1.2   Project Authorization

1.3   Regulatory Basis

1.4   Groundwater Investigation Chronology

1.5   Objectives and Scope of Investigation

1.6   Report Organization

Section 2 - Well Installation Methodology

2.1   Scope

2.2   Determination of Well Locations

2.3   Work Plan Development

2.3.1   Original RL83 Addendum (August 2000)

2.3.2   RL83 Addendum 2 (November 2000)

2.3.3   RL83 Addendum 3 (February 2001)

2.3.4   Work Plan Deviations

2.4   Monitoring Well Construction

2.5   Surface Completions

2.6   Lithologic Logs

2.7   Monitoring Well Development

2.7.1   Air-Lifting

2.7.2   Bailing

2.7.3   Pumping

2.8   Geophysical Borehole Logging

2.8.1   Electric Logs (Resistivity and Spontaneous Potential)

2.8.2   Natural Gamma Ray Logs

2.8.3   Caliper Logs

2.9   Injection Packer Tests

2.9.1   Theory

2.9.2   Methodology

2.9.3   Calculation of Hydraulic Conductivity

2.10   Well Surveying

2.11  Decontamination Procedures

2.11.1   Downhole Equipment Decontamination

2.11.2   Decontamination of Logging and Sampling Equipment

2.12   Management and Sampling of Investigation-Derived Waste

2.13   Sampling

2.13.1   Soil/Rock Sampling

2.13.2   Groundwater Sampling

2.13.3   Off-post Impacts Sampling

2.14   Fracture Analysis

2.15   Pump Installation

2.15.1   Low-Flow Pumps

2.16   Transducer Installation

2.16.1   Transducer Installation

Section 3 - Well Installation Summary

3.1   CS-MW9 Cluster Wells

3.1.1   CS-MW9-CC

3.1.2   CS-MW9-BS

3.1.3   CS-MW9-LGR

3.2   CS-MW3-LGR

3.3   CS-MW5-LGR

3.4   CS-MW4-LGR

3.5   CS-MW7 Cluster Wells

3.5.1   CS-MW7-CC

3.5.2   CS-MW7-LGR

3.6   CS-MW6 Cluster Wells

3.6.1   CS-MW6-LGR

3.6.2   CS-MW6-BS

3.6.3   CS-MW6-CC

3.7   CS-MW8 Cluster Wells

3.7.1   CS-MW8-LGR

3.7.2   CS-MW8-CC

3.8   CS-MW10 Cluster Wells

3.8.  1 CS-MW10-CC

3.8.2   CS-MW10-LGR

Section 4 - Results and Interpretation

4.1   Geophysical Logs

4.2   Injection Packer Tests

4.2.1   Pack Test Summaries

4.2.2   Data Reduction and Hydraulic Conductivity

4.2.3   Geotechnical Lab Testing

4.3   Groundwater Sampling

4.3.1   Discrete Sampling During Well Installation

4.3.2   Off-post Impact Monitoring

4.3.3   Major Ion Data

4.4   Soil and Rock Sampling

4.4.1   Surface Soil Samples

4.4.2   Glen Rose Samples

4.4.3   Bexar Shale Samples

4.4.4   Cow Creek and Hammett Shale Samples

4.5   Fractured Core Analysis

Section 5 - Conclusions and Recommendations

5.1   Conclusions

5.2   Recommendations

5.2.1   Upgrade Existing Wells

5.2.2   Installation of New Wells

5.2.3   Vertical Profiling of Contaminants/Recharge Study

5.2.4   Automated Data Collection

5.2.5   Collection of Off-post Data