PUBLIC HEALTH ASSESSMENT

DELAVAN MUNI WELL #4
DELAVAN, WALWORTH COUNTY, WISCONSIN
CERCLIS NO. WID980820062

December 20, 1996

Prepared by

Wisconsin Department of Health and Family Services
Under Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry

TABLE OF CONTENTS

SUMMARY

BACKGROUND

A. Site Description and History
B. Site Visits
C. Demographics, Land Use, and Natural Resource Use
D. State and Local Health Data

COMMUNITY HEALTH CONCERNS

ENVIRONMENTAL CONTAMINATION AND OTHER HAZARDS

A. Source of Contamination in Well No. 4
Sub-surface Soil at the Sta-Rite Property
Groundwater at the Sta-Rite Property
B. Groundwater Contamination in Delavan Municipal Wells
C. Other Delavan Groundwater Contamination
Contaminated Groundwater Migrating from the Sta-Rite Property
Other Delavan-Area Groundwater Investigations
Private Drinking Water Investigations
D. Surface Water Contamination
Storm Sewer Effluent
Surface Water Run-Off from Sta-Rite Property
Comus Lake
E. Toxic Chemical Release Inventory
F. Quality Assurance and Quality Control
G. Physical and Other Hazards

PATHWAYS ANALYSES

A. Completed Human Exposure Pathways
Public Water Users
B. Potential Human Exposure Pathways
Private Wells
Surface Water
Sediment
Contaminated Air Released from Storm Sewers

PUBLIC HEALTH IMPLICATIONS

A. Toxicological Evaluation
Tetrachloroethylene
Trichloroethylene
B. Health Outcome Data Evaluation
C. Community Health Concerns Evaluation

CONCLUSIONS

RECOMMENDATIONS

A. Need For Follow-up Health Activities
B. Public Health Action

TABLES

PREPARERS OF REPORT

SELECTED REFERENCES

APPENDIX A: Figures

APPENDIX B: Definitions

APPENDIX C: Pathways Evaluation

APPENDIX D: Toxicological Evaluation - Cancer Risk Estimation Methods

APPENDIX E: Response to Public Comments

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