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Point of Contacts

John H. Zimmerman (Acting Branch Chief) Res. Physical Scientist (702) 798-2385 (702) 798-2107 fax zimmerman.johnh@epa.gov
Brian A. Schumacher (702) 798-2242 (702) 798-2107 fax schumacher.brian@epa.gov	Steven P. Gardner Geologist (702) 798-2580 (702) 798-2107 fax gardner.steve@epa.gov	D. Dale Werkema Physical Scientist (702) 798-2263 (702) 798-2107 fax werkema.d@epa.gov

Alan Williams Physical Scientist (702) 798-2103 (702) 798-2107 fax williams.alan@epa.gov	Katrina Varner Research Chemist (702) 798-2645 (702) 798-2107 fax varner.katrina@epa.gov	Marion Edison TSC Support (702) 798-2176 (702) 798-2107 fax edison.marion@epa.gov

Characterization and Monitoring Home Page
Environmental Sciences | Research & Development
National Exposure Research Laboratory
Send questions or comments to Steve Gardner
Email: gardner.steve@epa.gov

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