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PUBLIC HEALTH ASSESSMENT

AMERICAN CROSSARM AND CONDUIT COMPANY
CHEHALIS, LEWIS COUNTY, WASHINGTON
CERCLIS NO. WAD057311094

February 28, 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 Evaluation

CONCLUSIONS

RECOMMENDATIONS

PUBLIC HEALTH ACTIONS

PREPARERS OF REPORT

REFERENCES

APPENDICES


ABBREVIATIONS AND ACRONYMS

ACCAmerican Crossarm and Conduit

ATSDRAgency for Toxic Substance and Disease Registry

CPAHCarcinogenic PAH value is for benzo(a)pyrene (see PAHs)

CREGCancer Risk Evaluation Guide (promulgating agency ATSDR). CREGs areestimated contaminant concentrations based on one excess cancer in a millionpersons exposed over a lifetime (70 years). CREGs are calculated from EPA'scancer slope factors.

dioxinrepresents all isomers and congeners of dioxin and furans

EMEGEnvironmental Media Evaluation Guide (promulgating agency ATSDR). EMEGsare screening values used to select chemical contaminants of potential healthconcern. EMEGs are estimated contaminant concentrations in particular media atwhich daily exposure would be unlikely to result in noncancer health effects. EMEGvalues are calculated 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 health effects of chemicalcontaminants commonly found at hazardous waste sites. MRLs are estimates ofdaily exposure to contaminants below which noncancer, adverse health effects areunlikely to occur. If no MRL exists for a contaminant, a comparison value iscalculated from an Environmental Protection Agency (EPA) Rfd, an estimate of thedaily exposure to a contaminant that is unlikely to cause noncancer, adverse healtheffects. The resulting value is called an RMEG.

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

ug/kgmicrograms per kilogram, equivalent to ppb (see below)

ng/kgnanograms per kilogram, equivalent to ppt (see below)

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

ppbparts per billion (10E-9) one second in 32 years

pptparts per trillion (10E-12) one second in 32,000 years

PAHspolycyclic aromatic hydrocarbons

PCPpentachlorophenol

RfDReference Dose (EPA). EPA's Reference Dose (RfD) and Reference Concentration(RfC) are estimates of the daily exposure to a contaminant that is unlikely to causeadverse health effects.

RI/FSRemedial Investigation/Feasibility Study

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

WDOHWashington State Department of Health


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