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PUBLIC HEALTH ASSESSMENT

AIR FORCE PLANT PJKS
WATERTON, JEFFERSON COUNTY, COLORADO
EPA FACILITY ID: CO7570090038

March 29, 2000

Prepared by:

Federal Facilities Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry


TABLE OF CONTENTS

LIST OF TABLES

LIST OF FIGURES

LIST OF ABBREVIATIONS

SUMMARY

BACKGROUND

COMMUNITY HEALTH CONCERNS AND POTENTIAL EXPOSURE PATHWAYS

ATSDR CHILD HEALTH INITIATIVE

CONCLUSIONS

PUBLIC HEALTH ACTION PLAN

PREPARERS OF REPORT

REFERENCES

TABLES

FIGURES

APPENDIX A. Glossary

APPENDIX B. Comparison Values

APPENDIX C. Estimated Exposure and Health Effects

APPENDIX D. Fate and Transport of Trichloroethylene, Hydrazine, n-Nitrosodimethylamine, and Hexavalent Chromium

APPENDIX E. Responses to Public Comments


LIST OF TABLES

Table 1. Evaluation of Potential Public Health Hazards Associated with the Installation Restoration Program Sites and Areas of Concern

Table 2. Exposure Pathways Evaluation Table

Table 3. Summary of Contaminants in On-Site Groundwater Monitoring Wells

Table 4. Summary of Contaminants in Groundwater (Alluvial) Near the Kassler Water Treatment Plant

Table 5. Summary of Contaminants in Kassler Water Treatment Plant (Before Closure)

Table 6. Summary of Contaminants in On-Site Surface Water

Table 7. Summary of Contaminants in Off-Site Surface Water


LIST OF FIGURES

Figure 1. Area Location

Figure 2. Site Location

Figure 3. Location of the Kassler Area and the Kassler Water Treatment Plant

Figure 4. ATSDR's Exposure Evaluation Process

Figure 5. AFP PJKS Contaminant Plumes


LIST OF ABBREVIATIONS

AEC

Atomic Energy Commission
AFB Air Force Base
AFP PJKS Air Force Plant PJKS (Peter J. Kiewitt and Sons)
AOC Area of Concern
AT averaging time

ATSDR

Agency for Toxic Substances and Disease Registry
BW body weight
CDPHE Colorado Department of Public Health and the Environment
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act
CF conversion factor

CPF

cancer potency factor
CREG ATSDR's cancer risk evaluation guide
CV comparison value
1,2-DCA 1,2-dichloroethane
1,1-DCE 1,1-dichloroethylene
1,2-DCE 1,2-dichloroethylene (cis and trans)

DW

Denver Water
ED exposure duration
EF exposure frequency
EMEG ATSDR's environmental media evaluation guide
EPA U.S. Environmental Protection Agency
EPL Engineering Propulsion Laboratory

FS

feasibility study
HARP Health Activities Recommendation Panel
IR ingestion rate
IRP Installation Restoration Program
kg kilogram
LMA Lockheed Martin Astronautics

MCL

EPA's maximum contaminant level
mg/L milligrams per liter
mg/kg/day milligrams per kilogram per day
MRL ATSDR's minimal risk level
NPL National Priorities List

NDMA

n-nitrosodimethylamine
ND not detected
N2O4 nitrogen tetraoxide
NPL National Priorities List
OU operable unit

OTL

Ordnance Testing Laboratory
PAHs polycyclic aromatic hydrocarbons
PCE tetrachloroethylene
PCBs polychlorinated biphenyls
pH a symbol for the degree of acidity or alkalinity of a solution

PHAP

Public Health Action Plan
ppb parts per billion
ppm parts per million
PVC polyvinyl chloride
RAB Restoration Advisory Board
RCRA Resource Conservation and Recovery Act
RI remedial investigation
RMEG ATSDR's reference dose media evaluation guide
SA surface area
SVOCs semivolatile organic compounds
1,1,1-TCA 1,1,1-trichloroethane
TCE trichloroethylene
UDMH unsymmetrical dimethylhydrazine
UST underground storage tank
VOC volatile organic compound


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