PUBLIC HEALTH ASSESSMENT
LOCKWOOD SOLVENT GROUNDWATER PLUME
(a/k/a LOCKWOOD SOLVENT GROUND WATER PLUME)
BILLINGS, YELLOWSTONE COUNTY, MONTANA
EPA FACILITY ID: MT0007623052
July 7, 2003
Prepared by:
Superfund Site Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
PURPOSE AND PUBLIC HEALTH ISSUES
DISCUSSION OF EXPOSURE PATHWAYS
DISCUSSION OF PUBLIC HEALTH SIGNIFICANCE OF CONTAMINANTS
- VOCs in Private Wells and Indoor Air
Possible Harmful Effects from VOCs in Private Wells
Number of Contaminated Private Well
Uncertainty Analysis
Current Indoor Air Levels of VOCs
DISCUSSION OF COMMUNITY HEALTH CONCERNS
ATSDR NATIONAL EXPOSURE REGISTRY, TRICHLOROETHYLENE SUBREGISTRY
HEALTH EDUCATION AND PROMOTION
- Appendix A: Figures 1 and 2
Appendix B: Tables 1 through 10
Appendix C: Description of Technical Methods
Appendix D: Health Consultation, Lockwood Solvents Site, December 9, 1999
Appendix E: Health Consultation, Lockwood Solvents Site, May 3, 2000
Appendix F: Fact Sheet: Lockwood Solvents Site, Safe Summer Water Uses
Appendix G: Press Release, Trichloroethene Subregistry
Appendix H: Baseline Survey, Trichloroethene Subregistry
Appendix I: Current Executive Summary, Trichloroethene Subregistry
Appendix J: ATSDR Response to Comments
| ATSDR | Agency for Toxic Substances and Disease Registry |
|---|---|
| CERCLA | Comprehensive Environmental Response, Compensation and Liability Act |
| Cis-1,2-dichloroethene | cis-1,2-DCE |
| CREG | Cancer Risk Evaluation Guide |
| EMEG | Environmental Media Evaluation Guide |
| EPA | U.S. Environmental Protection Agency |
| kg | Kilogram |
| LTHA | Lifetime Health Advisory |
| LU.S.T | Leaking Underground Storage Tank |
| LWSD | Lockwood Water and Sewer District |
| mg | Milligram |
| mg/L | Milligrams per Liter |
| MCL | Maximum Contaminant Level |
| MRL | Minimal Risk Level |
| MOS | Margin of Safety |
| aMRL | Acute Minimal Risk Level |
| iMRL | Intermediate Minimal Risk Level |
| cMRL | Chronic Minimal Risk Level |
| MDEQ | Montana Department of Environmental Quality |
| ND | Not Detected |
| NPL | National Priorities List |
| PCE | Tetrachloroethene, Tetrachlroroethylene |
| PHA | Public Health Assessment |
| PHAP | Public Health Action Plan |
| ppm | Parts Per Million |
| RAL | Removal Action Level |
| cRfC | Chronic Reference Concentration |
| RBC | Risk Based Concentration |
| RMEG | Reference Media Evaluation Guide |
| SSL | Soil Screening Level |
| TCE | Trichloroethene, Trichloroethylene |
| µg | Microgram |
| µg/m3 | Microgram per cubic meter air |
| VOC | Volatile Organic Compound |
