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PUBLIC HEALTH ASSESSMENT

BLACKBIRD MINE
COBALT, LEMHI COUNTY, IDAHO
CERCLIS NO. IDD980725832

January 12, 1995

Prepared by

U.S. Department of Health and Human Services
Public Health Service
Agency for Toxic Substances and Disease Registry
Division of Health Assessment and Consultation

Atlanta, Georgia

TABLE OF CONTENTS

LIST OF TABLES

LIST OF FIGURES

SUMMARY

BACKGROUND

A. Site Description and History
B. Site Visit
C. Demographics, Land Use, and Natural Resources Use
D. Health Outcome Data

COMMUNITY HEALTH CONCERNS

ENVIRONMENTAL CONTAMINATION AND OTHER HAZARDS

A. Environmental Contamination
B. Quality Assurance and Quality Control
C. Physical and Other Hazards

PATHWAYS ANALYSES

A. Completed Exposure Pathways
B. Potential Exposure Pathways

PUBLIC HEALTH IMPLICATIONS

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

CONCLUSIONS

RECOMMENDATIONS

PREPARERS OF REPORT

REFERENCES

APPENDIX A. FIGURES

LIST OF TABLES
Table 1.Contaminant Concentrations in Surface Deposits (e.g., Tailings, Waste Rock,Mill Debris, Dredge Spoils)
Table 2.Contaminant Concentrations in Groundwater Samples (Seep & Adit Discharges)
Table 3.Contaminant Concentrations in Surface Water Samples
Table 4.Completed Exposure Pathways
Table 5.Potential Exposure Pathways

LIST OF FIGURES
Figure 1.General Site Location Map
Figure 2.Detailed Site Location Map
Figure 3.Surface Deposit Sample Locations, Big Deer and Upper Blackbird CreekDrainages
Figure 4.Surface Deposit Sample Locations, Lower Blackbird Creek Drainage
Figure 5.Water Sample Locations, Big Deer Creek Drainage
Figure 6.Water Sample Locations, Blackbird Creek Drainage


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