PRELIMINARY PUBLIC HEALTH ASSESSMENT
UNITED HECKATHORN
RICHMOND, CONTRA COSTA COUNTY, CALIFORNIA
EPA FACILITY
ID: CAD981436363
April 16, 1992
Prepared by:
California Department of Health Services
Under Cooperative Agreement with the
Agency for Toxic Substances Disease Registry
TABLE OF CONTENTS
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A. Site Description and History
B. Site Visit
C. Demographics, Land Use and Natural Resource Use
D. Health Outcome Data
ENVIRONMENTAL CONTAMINATION AND OTHER HAZARDS
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A. On-Site Contamination
B. Off-Site Contamination
C. Quality Assurance and Quality Control
D. Physical and Other Hazards
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A. Environmental Pathways
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- Aerial Migration to the Residential Neighborhood of On-Site Contaminants Adsorbed to Soil Particulates
- Aerial Migration into Lauritzen Canal Sediments of On-Site Contaminants Adsorbed to Soil Particulates
- Migration of On-Site Contaminants Through Groundwater into Lauritzen Canal Sediments
- Migration Through Surface Water into Lauritzen Canal Sediments of On-Site Contaminants Adsorbed to Soil Particulates
- Contaminants Absorbed to Soil Particulates Migrating Through Lauritzen Canal Sediments into Biota
APPENDIX A: INHALATION OF CONTAMINANTED AIRBORNE
DUST IN THE RESIDENTIAL NEIGHBORHOOD NEAR UNITED HECKATHORN
CALCULATIONS OF INHALATION
RISK IN RESIDENTIAL AREA
APPENDIX B: EXCESS RISKS ASSOCIATED WITH EATING FISH CAUGHT NEAR UNITED HECKATHORN
APPENDIX C: RESPONSES TO PUBLIC COMMENTS
Table 1. Airborne Contaminant Concentrations
Table 3. Organochloride Contaminants (ppm) in On-Site Upland Soil Samples at United Heckathorn
Table 6. Off-site Airborne Contaminant Concentrations (ng/m3) at Southern End of Residential Area
Table 8. Off-Site Concentration of Metals in Lauritzen Canal Sediments at United Heckathorn Site
Table 9. Completed Exposure Pathways
Figure 1. Geographic Location of Site


