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PUBLIC HEALTH ASSESSMENT

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

LIST OF FIGURES

LIST OF TABLES

ABBREVIATIONS AND ACRONYMS

SUMMARY

INTRODUCTION

BACKGROUND

COMMUNITY HEALTH CONCERNS

ENVIRONMENTAL CONTAMINATION AND PUBLIC HEALTH IMPLICATIONS

EVALUATION OF COMMUNITY HEALTH CONCERNS

CONCLUSIONS

PUBLIC HEALTH ACTIONS

PREPARERS OF REPORT

REFERENCES

APPENDIX A: CHEMICAL EVALUATION

APPENDIX B: TOXICOLOGICAL IMPLICATIONS

APPENDIX C: RADIATION

APPENDIX D: GLOSSARY

APPENDIX E: ATSDR DOCUMENTS

APPENDIX F: RESPONSE TO PUBLIC COMMENT

LIST OF FIGURES

Figure 1: Location Map - Weldon Spring Area

Figure 2: Weldon Spring Study Area

Figure 3: Chemical Plant Site

Figure 4: Chemical Plant Site

Figure 5: Population Density

Figure 6: Monitoring Wells and Other Water Sources

Figure 7: Locations of Contaminated Lakes and Surface Soil

LIST OF TABLES


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


ABBREVIATIONS AND ACRONYMS

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


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