PUBLIC HEALTH ASSESSMENT
DOVER AIR FORCE BASE
DOVER, KENT COUNTY, DELAWARE
EPA FACILITY ID: DE8570024010
December 31, 2003
Prepared by:
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
- II.A. Site Description and Operational History
II.B. Remedial and Regulatory History
II.C. ATSDR Activities
II.D. Demographics
II.E. Land Use
II.F. Natural Resources
III. EVALUATION OF ENVIRONMENTAL CONTAMINATION AND POTENTIAL EXPOSURE PATHWAYS
- III.A. Introduction
III.B. Concern: Past Contamination of Off-Base Drinking Water Supply Wells.
III.C. Concern: Arsenic in DAFB Drinking Water Wells
III.D. Concern: Vapor Intrusion from Groundwater Plumes beneath On-Base Buildings
III.E. Concern: Lead-Based Paint in Base Housing
III.F. Concern: Current Land Use at a Former Landfill
VIII. PUBLIC HEALTH ACTION PLAN
APPENDIX C: ATSDR'S METHODS FOR DETERMINING WHETHER A HEALTH HAZARD EXISTS
APPENDIX D: VAPOR INTRUSION AND JOHNSON AND ETTINGER INDOOR AIR MODEL
APPENDIX E: RESPONSE TO PUBLIC COMMENTS
- Table 1. Evaluation of Public Potential Health Hazards at DAFB
Table 2. Evaluation of Exposure Pathways at DAFB
Table 3. Contaminant Concentrations in Off-Site Water Supply Wells
Table 4. Chronological Summary of Monitoring Activities at Off-Site Water Supply Wells
Table 5. Area 5 Contamination
Table 6. DAFB Drinking Water Supply
Table 7. Maximum Arsenic Concentration (ppb) in DAFB Drinking Water Supply, 1980-2001
Table 8. TCE and cis-1,2-DCE Concentrations in Deep Columbia Aquifer Monitoring Wells Located in the Eagle Heights Housing Area, 1993–2003
- Figure 1. Area Map
Figure 2. Site Map
Figure 3. Exposure Pathway Figure
Figure 4. Demographics within a 1-Mile Buffer of Dover Air Force Base
Figure 5. Area 5 Plume and Off-Base Wells
Figure 6. Location of LF26, Ball Fields, and Schools
| AFIERA | Air Force Institute for Environment, Safety, and Occupational Health Risk Analysis |
|---|---|
| ATSDR | Agency for Toxic Substances and Disease Registry |
| bgs | below ground surface |
| BTEX | benzene, toluene, ethylbenzene, and xylene |
| CEL | cancer effect level |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act |
| CREG | ATSDR's cancer risk evaluation guide |
| CRP | community response plan |
| CVs | comparison value |
| DAFB | Dover Air Force Base |
| DCE | dichloroethylene |
| DelDOT | Delaware Department of Transportation |
| DNREC | Delaware's Department of Natural Resources and Environmental Control |
| DOD | Department of Defense |
| DPH | Delaware' Department of Public Health |
| EMEG | ATSDR's environmental media evaluation guide |
| EPA | U.S. Environmental Protection Agency |
| FFA | Federal Facilities Agreement |
| FS | feasibility study |
| FT | fire training |
| GMZ | DNREC's Groundwater Management Zone |
| IRP | installation restoration program |
| IWBs | industrial waste basins |
| IWCD | industrial waste collection drains |
| LF | landfill |
| LOAEL | lowest-observed adverse effect level |
| MATS | Military Air Transport Services |
| MCL | EPA's maximum contaminant level |
| µg/dL | micrograms per deciliter |
| mg/kg/day | milligram per kilogram per day |
| MRL | ATSDR's minimum risk level |
| NFA | no further action |
| NOAEL | no-observed-adverse-effect level |
| NPL | EPA's National Priorities List |
| O/W | oil/water |
| PCBs | polychlorinated biphenyls |
| PCE | tetrachloroethylene |
| PHA | public health assessment |
| PHAP | Public Health Action Plan |
| ppb | parts per billion |
| ppm | parts per million |
| RAB | restoration advisory board |
| RBC | EPA Region III's risk-based concentration |
| RfD | EPA's reference dose |
| RI | remedial investigation |
| RMEG | ATSDR's reference dose media evaluation guide |
| ROD | record of decision |
| SVOCs | semi-volatile organic compounds |
| TCE | trichloroethylene |
| USAF | U.S. Air Force |
| USTs | underground storage tanks |
| VOCs | volatile organic compounds |
