PUBLIC HEALTH ASSESSMENT
MATHER AIR FORCE BASE
MATHER, SACRAMENTO COUNTY, CALIFORNIA
EPA FACILITY ID: CA8570024143
September 29, 2000
Prepared by:
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
-
Site Description and Operational History
Remedial and Regulatory History
ATSDR Involvement
Demographics and Land Use
Quality Assurance and Quality Control
EVALUATION OF ENVIRONMENTAL CONTAMINATION AND EXPOSURE SITUATIONS
-
Introduction
-
What is meant by exposure?
How does ATSDR determine which exposure situations to evaluate?
If someone is exposed, will they get sick?
What exposure situations were evaluated for Mather?
-
Hydrogeology
Groundwater Use and Drinking Water Supplies
Nature and Extent of Contamination
Evaluation of Potential Public Health Hazards
-
APPENDIX A: Figures
APPENDIX B: IRP Sites And Evaluation of Potential Public Health Hazards
APPENDIX C: ATSDR's Exposure Evaluation Process
APPENDIX D: Perchlorate in Drinking Water at Mather
APPENDIX E: ATSDR Plain Language Glossary of Environmental Health Terms
(Revised December 15, 1999)
APPENDIX F: Responses to Public Comments
Table 1: Completed Exposure Situations at Mather AFB
Table 2: Summary of Exposures to Contaminants in Drinking Water
Table 3: Description of Community Supply Wells
Table 4: Contaminants Detected above Comparison Values in Drinking Water Supply Wells
Table 5: Summary of Surface Soil Sampling Data That Exceed Comparison Values
Table 6: Summary of Surface Water Sampling Data That Exceed Comparison Values
Table 7: Summary of Sediment Sampling Data That Exceed Comparison Values
Figure 2: Mather Air Force Base
Figure 3: Demographic Information, Mather AFB
Figure 4: ATSDR's Exposure Evaluation Process
Figure 5: Mather AFB Contaminant Plumes and Community and On-base Supply Wells
Figure 6: Public Health Hazard Category Definitions
ABBREVIATIONS | |
| AC&W | Aircraft Control and Warning |
| Aerojet | Aerojet-General Corporation |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| bgs | below ground surface |
| BRAC | Base Realignment and Closure |
| CALEPA | California Environmental Protection Agency |
| CEL | cancer effect level |
| CDHS | California Department of Health Services |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act |
| CPF | cancer potency factor |
| CREG | ATSDR's cancer risk evaluation guide |
| CUCC | Citizens Utilities Company of California |
| CV | comparison value |
| 1,2-DCA | 1,2-dichloroethane |
| DCE | dichloroethylene |
| DOD | Department of Defense |
| EMEG | ATSDR's environmental media evaluation guide |
| FFA | Federal Facility Agreement |
| FOSET | Finding of Suitability for Early Transfer |
| IRP | Installation Restoration Program |
| JP-4 | jet petroleum number 4 |
| LOAEL | lowest-observed-adverse-effect-level |
| Mather | Mather Air Force Base |
| MCL | USEPA's maximum contaminant level |
| MRL | ATSDR minimal risk level |
| NCEA | National Center for Environmental Assessment |
| NOAEL | no-observed-adverse-effect-level |
| NPL | National Priorities List |
| OSHA | Occupational Safety and Health Administration |
| OU | operable unit |
| PAH | polycyclic aromatic hydrocarbon |
| PCB | polychlorinated biphenyl |
| PCE | tetrachloroethylene, also know as perchloroethene |
| PHA | public health assessment |
| PHAP | public health action plan |
| POL | petroleum, oil, and lubricant |
| ppb | parts per billion |
| ppm | parts per million |
| ppt | parts per trillion |
| RBC | USEPA Region III risk-based concentration |
| RCRA | Resource Conservation and Recovery Act |
| RfD | reference dose |
| RMEG | ATSDR's reference media evaluation guide |
| ROD | record of decision |
| SAC | Strategic Air Command |
| SVE | soil-vapor extraction |
| TCE | trichloroethylene |
| TPH | total petroleum hydrocarbons |
| USAF | U.S. Air Force |
| USEPA | United States Environmental Protection Agency |
| UST | underground storage tank |
| VOC | volatile organic compound |