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PUBLIC HEALTH ASSESSMENT

BOOMSNUB/AIRCO
VANCOUVER, CLARK COUNTY, WASHINGTON
CERCLIS NO. WAD009624453

July 18, 1995

Prepared by

Washington State Department of Health
Under Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry

TABLE OF CONTENTS

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. On-Site Contamination
B. Off-Site Contamination
C. Quality Assurance and Quality Control
D. Physical and Other Hazards

PATHWAY ANALYSES

A. Completed Exposure Pathways
B. Potential Exposure Pathways

PUBLIC HEALTH IMPLICATIONS

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

CONCLUSIONS

RECOMMENDATIONS

PUBLIC HEALTH ACTIONS

PREPARERS OF REPORT

REFERENCES

APPENDICES

LIST OF TABLES AND FIGURES

Tables in the public health assessment

1. Reported Spill Episodes in Site Zip Code
2. Completed and Potential Exposure Pathways
3. Qualitative Cancer Risk
4. EPA's Chromium Health Advisory for Drinking Water

Figures in Appendix A

1. Regional Location Map
2. Diagram of site and vicinity
3. Distribution of VOCs and chromium in groundwater

ABBREVIATIONS AND ACRONYMS

ATSDRAgency for Toxic Substances and Disease Registry

CREGCancer Risk Evaluation Guide (promulgating agency ATSDR). CREGsare estimated contaminant concentrations based on a one excess cancerin a million persons exposed over a lifetime (70 years). CREGs arecalculated from EPA's cancer slope factors.

CPUClark Public Utilities

EcologyWashington State Department of Ecology

EMEGEnvironmental Media Evaluation Guide (promulgating agency ATSDR). EMEGs are screening values used to select chemical contaminants ofpotential health concern. EMEGs are estimated contaminantconcentrations in particular media at which daily exposure would beunlikely to result in non-cancer health effects. EMEG values arecalculated by ATSDR using conservative exposure assumptions thatwould protect the most sensitive segment of the population.

EPAU.S. Environmental Protection Agency

MRLATSDR developed Minimal Risk Levels (MRLs) to evaluate healtheffects of chemical contaminants commonly found at hazardous wastesites. MRLs are estimates of daily exposure to contaminants belowwhich non-cancer, adverse health effects are unlikely to occur.

mg/kgmilligrams per kilogram, equivalent to ppm (see below)

ppmparts per million (10E-6) one second in 11 & 1/2 days

RfDReference Dose (EPA). EPA's Reference Dose (RfD) and ReferenceConcentration (RfC) are estimates of the daily exposure to a contaminantthat is unlikely to cause adverse health effects.

RMEGReference Dose-based Media Evaluation Guide calculated usingReference Dose (RfD) (definition above).

WDOHWashington State Department of Health


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