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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