PUBLIC HEALTH ASSESSMENT
BERTRAND CREEK AREA PROPERTIES
(a/k/a NORTH WHATCOM COUNTY GROUNDWATER CONTAMINATION)
LYNDEN, WHATCOM COUNTY, WASHINGTON
EPA FACILITY ID: WA0002325850
June 6, 2000
Prepared by:
The Washington State Department of Health
Under a Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
HEALTH OUTCOME DATA EVALUATION
COMMUNITY HEALTH CONCERNS EVALUATION
APPENDIX B. Exposure Dose Calculations
APPENDIX C. ATSDR Public Health Assessment Conclusion Categories
APPENDIX D. Response to Public Comments
APPENDIX E. Current Pesticide Use on Raspberry Fields in Washington State
Table 2. Contaminants of Concern in Farm Worker Camp Drinking Water Wells
Table 3. Results of 1,2-Dichloropropane Sampling in Shower Water Before and After Carbon Filtration
Table 4. Non-cancer Dose Calculations
Table 5. Cancer Dose Calculations
Table A2. Typical Pesticide Spray Program for the Year On an Average Farm
LIST OF CHARTS
Chart 1. 1,2-Dichloropropane in a Residential Drinking Water Well on Birch Bay-Lynden Road
Chart 2. Ethylene Dibromide in a Residential Drinking Water Well on Birch Bay-Lynden Road
Chart 4. Ethylene Dibromide Cancer Risk by Route of Exposure
Figure 2. Study Areas A (Meadowdale) and B (Bertrand Creek)
Figure 3. Demographics of Study Areas A (Meadowdale) and B (Bertrand Creek)
Figure 4. Boundaries of the Sumas-Blaine Aquifer
Figure 5. Direction of Groundwater Flow in the Sumas-Blaine Aquifer
Figure 6. Results of Whatcom County Well Testing for EDB from 1991-1999
Figure 7. Results of Whatcom County Well Testing for 1,2-DCP from 1991-1999
Figure 8. Results of Whatcom County Well Testing for Nitrate from 1991-1999
|
1,2-DCP |
1,2-dichloropropane
|
| 1,2,3-TCP |
1,2,3-trichloropropane
|
| ATSDR |
Agency for Toxic Substances and Disease Registry
|
|
COC |
Contaminant of Concern
|
| CSF |
Cancer Slope Factor
|
| DBCP |
1,2-dibromo-3-chloropropane
|
| DOH |
Washington State Department of Health
|
| Ecology |
Washington State Department of Ecology
|
| EDB |
ethylene dibromide
|
|
EPA |
Environmental Protection Agency
|
| LOAEL |
Lowest Observed Adverse Effect Level
|
| LTHA |
Lifetime Health Advisory
|
| MCL |
Maximum Contaminant Level
|
| MRL |
Minimal Risk Level
|
| NOAEL |
No Observed Adverse Effect Level
|
| PAH |
Polycyclic aromatic hydrocarbon
|
| PHA |
Public Health Assessment
|
| PHAP |
Public Health Action Plan
|
| ppb |
parts per billion
|
| ppm |
parts per million
|
| RfD |
Oral Reference Dose
|
| USGS |
United States Geological Survey
|
| VOC |
Volatile Organic Compound
|
| WCHHS |
Whatcom County Health and Human Services
|
| WWU |
Western Washington University
|
