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PUBLIC HEALTH ASSESSMENT

TRACY DEFENSE DEPOT
(a/k/a DEFENSE DISTRIBUTION REGION WEST TRACY ARMY)
TRACY, SAN JOAQUIN COUNTY, CALIFORNIA
CERCLIS NO. CA4971520834

September 2, 1998

Prepared by:

Federal Facilities Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry


TABLE OF CONTENTS

LIST OF TABLES

LIST OF FIGURES

LIST OF ABBREVIATIONS

SUMMARY

BACKGROUND

    Site Description and History
    Demographics
    Land Use and Natural Resources
    ATSDR Involvement
    Quality Assurance and Quality Control

EVALUATION OF ENVIRONMENTAL CONTAMINATION
AND POTENTIAL EXPOSURE PATHWAYS

    Introduction
    Consumption of Groundwater
    Contact with On-Site Surface Soil
    Inhalation of Soil Gas
    Consumption of Locally Grown Foods
    Consumption of Recreationally Caught Fish from the On-Site Stormwater Lagoon

COMMUNITY/PUBLIC HEALTH CONCERNS

ATSDR CHILD HEALTH INITIATIVE

CONCLUSIONS

PUBLIC HEALTH ACTION PLAN

PREPARERS OF REPORT

REFERENCES

TABLES

FIGURES

APPENDIX A: Glossary

APPENDIX B: List of Comparison Values

APPENDIX C: Estimated Exposures and Health Effects

APPENDIX D: Responses to Public Comments


LIST OF TABLES

Table 1. Operable Units
Table 2. Exposure Pathways Table
Table 3. Contaminant Concentrations in DDJC Tracy Water Supply Wells
Table 4. Contaminant Concentrations in Off-Site Private Wells (Domestic Use)
Table 5. Contaminant Concentrations in Off-Site Agricultural Wells
Table 6. Contaminant Concentrations in Day Care Center Surface Soil
Table 7. Contaminant Concentrations in On-Site Surface Soil


LIST OF FIGURES

Figure 1. Area Map
Figure 2. Site Map
Figure 3. Demographics in a 1-Mile Buffer Around DDJC Tracy
Figure 4. ATSDR's Exposure Evaluation Process
Figure 5. VOC Plume associated with OU 1

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