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PUBLIC HEALTH ASSESSMENT

GEORGE AIR FORCE BASE
VICTORVILLE, CALIFORNIA
CERCLIS NO. CA2570024453

December 1, 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
    Remedial and Regulatory History
    ATSDR Involvement
    Demographics
    Land Use and Natural Resources
    Quality Assurance and Quality Control

COMMUNITY HEALTH CONCERNS

ENVIRONMENTAL CONTAMINATION AND POTENTIAL PATHWAYS OF EXPOSURE

    Evaluation of Groundwater Exposure Pathway
    Evaluation of Soil Exposure Pathway
    Evaluation of Radiological Exposure Pathway

ATSDR CHILD HEALTH INITIATIVE

CONCLUSIONS

PUBLIC HEALTH ACTION PLAN

PREPARERS OF REPORT

REFERENCES

TABLES

FIGURES

APPENDIX A: Glossary

APPENDIX B: Population and Housing Data; Census Tract Map

APPENDIX C: ATSDR's Comparison Values

APPENDIX D: Public Comments on the Public Health Assessment


LIST OF TABLES

Table 1: Evaluation of Potential Public Health Hazards at George Air Force Base

Table 2: Exposure Pathways at George Air Force Base


LIST OF FIGURES

Figure 1. Vicinity Map

Figure 2. Operable Unit (OU) Site Locations

Figure 3. Land Use in the Vicinity of George Air Force Base

Figure 4. Approximate Locations of Known Municipal and Domestic Water Supply Wells in the Vicinity of George Air Force Base

Figure 5. ATSDR's Exposure Evaluation Process

Figure 6. Major Hydrogeologic Features in the Mojave River Basin

Figure 7. Simplified Conceptual Hydrogeologic Cross Section

Figure 8. Operable Unit 1 TCE Plume, October 1996

Figure 9. Simulated Flowlines and Extraction Well Capture Zones at OU 1 Lower Aquifer


List of Abbreviations

AFB air force base
ATSDR Agency for Toxic Substances and Disease Registry
bgs below ground surface
BTEX benzene, toluene, ethylbenzene, and xylenes
CDHS California Department of Health Services
CREG cancer risk evaluation guide
CV comparison value
DCE dichloroethylene
EMEG environmental media evaluation guide
EPA United States Environmental Protection Agency
IRP Installation Restoration Program
JP-4 jet propellant #4
MCLs maximum contaminant levels
MWA Mojave Water Agency
NEDA Northeast Disposal Area
NFA no further action
NPL National Priorities List
OU operable unit
PA preliminary assessment
PAHs polycyclic aromatic hydrocarbons
PCBs polychlorinated biphenyls
PCE perchloroethylene
PHA Public Health Assessment
PHAP public health action plan
POLs petroleum, oil, and lubricants
ppb parts per billion
RMEG reference dose media evaluation guide
RI/FS remedial investigation/feasibility study
SCIA Southern California International Airport
SEDA Southeast Disposal Area
SVOC semivolatile organic compound
TCA 1,1,1-trichloroethane
TCE trichloroethylene
TPH total petroleum hydrocarbons
UST underground storage tank
VOC volatile organic compound
VVEDA Victor Valley Economic Development Authority
VVWRA Victor Valley Wastewater Reclamation Authority

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