Region 8
Serving Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming and 27 Tribal Nations
Region 8 Risk Assessment Contacts
National Information
Region 8 Risk Assessment
Environmental Sampling and Analysis / Quality Control
Toxicology and Human Health Risk Assessment
Susan Griffin (Regional Toxicologist)
griffin.susan@epa.gov
303-312-6651
Wendy O'Brien (Regional Toxicologist)
obrien.wendy@epa.gov
303-312-6712
Bob Benson
benson.bob@epa.gov
303-312-7070
Suzanne Wuerthele
wuerthele.suzanne@epa.gov
303-312-6039
Ecological Risk Assessment
Richard Graham (Regional Ecotoxicologist)
graham.richardv@epa.gov
303-312-7080
Dan Wall (U.S. Fish & Wildlife Service Liaison)
wall.dan@epa.gov
303-312-6560
Robyn Blackburn (U.S. Fish & Wildlife Service Liaison)
blackburn.robyn@epa.gov
303-312-6663
Steve Wharton
wharton.steve@epa.gov
303-312-6935
Mailing address:
US EPA Region 8
8OC-EISC
1595 Wynkoop St
Denver, CO 80202-1129
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