WELDON SPRING SITE REMEDIAL ACTION PROJECT
(CHEMICAL PLANT, RAFFINATE PITS, QUARRY)
ST. CHARLES, ST. CHARLES COUNTY, MISSOURI
CERCLIS NO. MO3210090004
June 30, 1997
Prepared by
Energy Section
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
ENVIRONMENTAL CONTAMINATION AND PUBLIC HEALTH IMPLICATIONS
EVALUATION OF COMMUNITY HEALTH CONCERNS
APPENDIX A: CHEMICAL EVALUATION
APPENDIX B: TOXICOLOGICAL IMPLICATIONS
APPENDIX F: RESPONSE TO PUBLIC COMMENT
LIST OF FIGURES
Figure 1: Location Map - Weldon Spring Area
Figure 2: Weldon Spring Study Area
Figure 6: Monitoring Wells and Other Water Sources
Figure 7: Locations of Contaminated Lakes and Surface Soil
TABLE 1. COMMUNITY EXPOSURE CONCERNS
TABLE 2. COMMUNITY HEALTH CONCERNS
TABLE 3. MAXIMUM RADIONUCLIDES CONCENTRATIONS IN SOIL
TABLE 4. MAXIMUM RADIONUCLIDES CONCENTRATIONS IN OTHER MEDIA
TABLE 5. EFFECTIVE RADIATION DOSES FOR EXPOSURE SCENARIOS
ALI | Annual Limit of Intake |
ATSDR | Agency for Toxic Substances and Disease Registry |
Bq | Becquerel |
CERCLA | Comprehensive Environmental Response Compensation and Liability Act, or Superfund |
CREG | Cancer Risk Evaluation Guides |
DNB | 1,3-Dinitrobenzene |
DNT | 2,4-Dinitrotoluene |
DNT | 2,6-Dinitrotoluene |
DOE | U. S. Department of Energy |
EMEG | Environmental Media Evaluation Guides |
EPA | U.S. Environmental Protection Agency |
ICRP | International Commission on Radiological Protection |
kg | kilogram |
m3 | cubic meter |
mg | milligram |
mrad | millirad |
mrem | millirem |
mSv | millisievert |
MRL | Minimal Risk Level |
MCLGs | Maximum Contaminant Level Goals |
NPL | National Priorities List |
OSHA | Occupational Safety and Health Administration |
PALI | Public Annual Limit of Intake |
PCBs | Polychlorinated Biphenyls |
pCi/g | picocurie per gram |
pCi/L | picocurie per liter |
RfD | Reference Dose |
RMEG | Reference Media Evaluation Guide |
TNB | 1,3,5-Trinitrobenezene |
TNT | 2,4,6-Trinitrotoluene |