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PUBLIC HEALTH ASSESSMENT

LANGLEY AIR FORCE BASE
and
NASA LANGLEY RESEARCH CENTER
HAMPTON, YORK COUNTY, VIRGINIA
CERCLIS NO. VA4570024477
CERCLIS NO. VA2800005033

December 29, 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

ABBREVIATIONS

SUMMARY

BACKGROUND

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

EVALUATION OF ENVIRONMENTAL CONTAMINATION AND POTENTIAL EXPOSURE PATHWAYS

    Introduction
    Concern: Fish and shellfish in the adjoining estuary
    Concern: Contaminated soil at the site of the former playground
    Concern: Soil and physical hazards at the abandoned entomology building
    Concern: Soil and physical hazards at the fire training area
    Concern: Storage of fill material at Landfill
    Concern: Lead-contaminated soil in the housing areas
    Concern: Soil at the open storage area

COMMUNITY HEALTH CONCERNS

ATSDR'S CHILD HEALTH INITIATIVE

CONCLUSIONS

PUBLIC HEALTH ACTION PLAN

PREPARERS OF REPORT

REFERENCES

TABLES

FIGURES

APPENDIX A: Glossary

APPENDIX B: Comparison Values

APPENDIX C: Evaluation of Estimated Exposure Doses and Health Effects for Ingestion of Fish and Shellfish from Tabbs Creek and Soil Contact at Langley AFB Sites OT-06, OT-25, and FT-41

APPENDIX D: Public Comments


LIST OF TABLES

Table 1: Evaluation of Potential Public Health Hazards for Langley Air Force Base
Table 2: Evaluation of Potential Public Health Hazards for NASA Langley Research Center
Table 3: Exposure Pathways


LIST OF FIGURES

Figure 1: Location Map: Langley AFB and NASA LaRC
Figure 2: Topographic Map: Langley AFB and NASA LaRC
Figure 3: Demographics of Population Residing Within a 1-Mile Radius
Figure 4: ATSDR's Exposure Evaluation Process
Figure 5: IRP Site Map: Langley AFB and NASA LaRC
Figure 6: Map of Tabbs Creek

ABBREVIATIONS
AT averaging time
AFB Air Force Base
ATSDR Agency for Toxic Substances and Disease Registry
BTEX benzene, toluene, ethylbenzene, and xylenes
BW body weight
CF conversion factor
CREG ATSDR's cancer risk evaluation guide
CPF cancer potency factor
CRP community relations plan
CV comparison value
ED exposure duration
EF exposure frequency
EMEG ATSDR's environmental media evaluation guide (chronic or intermediate)
EPA U.S. Environmental Protection Agency
FI fraction ingested
HARP Health Activities Recommendation Panel
IR ingestion rate
kg kilogram
IRP installation restoration program
LaRC Langley Research Center
mg milligram
MRL ATSDR's minimal risk level
NACA National Advisory Committee for Aeronautics
NASA National Aeronautics and Space Administration
nd not detected
NPL National Priorities List
PAHs polycyclic aromatic hydrocarbons
PCBs polychlorinated biphenyls
PCTs polychlorinated terphenyls
PHAP Public Health Action Plan
POL petroleum, oil, and lubricants
ppb parts per billion
ppm parts per million
RAB Restoration Advisory Board
RBC EPA's Region III risk-based concentration
RfD EPA's reference dose
RMEG ATSDR's reference media evaluation guide
SVOCs semivolatile organic compounds
TEF toxic equivalency factor
VOCs volatile organic compounds


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