Contact Us
Please send your questions or comments regarding the USDA Agricultural Air Quality Task Force to:
Dr. Greg Johnson
Meteorologist/Climatologist, AQAC Team Leader
USDA NRCS AQAC Team
1201 N.E. Lloyd Blvd, Suite 1000
Portland, OR 97232
Telephone: 503-273-2424
Fax: 503-273-2401
E-mail: greg.johnson@por.usda.gov
Dr. Adam Chambers
Air Quality Scientist
USDA NRCS AQAC Team
1201 NE Lloyd Blvd, Suite 1000
Portland, Oregon 97232-1202
Telephone: 503-273-2410
Fax: 503-273-2401
Email: adam.chambers@por.usda.gov
Dr. Ray Knighton
National Program Leader
National Institute of Food and Agriculture
1400 Independence Avenue, SW
Mail Stop 2210
Washington, DC 20250
Telephone: 202-401-6417
Fax: 202-401-1706
E-mail: rknighton@nifa.usda.gov
Mr. Jeff Schmidt
Area Conservationist
USDA NRCS
750 South Military Trail, Suite M
West Palm Beach, FL 33415-3963
Telephone: 561-683-0883
Fax: 561-683-9825
E-mail: jeff.schmidt@fl.usda.gov
Dr. Charlie Walthall
ARS National Program Leader for
Global Change and Air Quality
USDA ARS NPS
Room 4-2278
5601 Sunnyside Avenue
Beltsville, MD 20705-5140
Telephone: 301-504-4634
Fax: 301-504-6231
E-mail: charlie.wathall@ars.usda.gov
Mr. Pete Lahm
National Smoke Management Specialist
USDA Forest Service
Fire and Aviation Management
201 14th St. SW
Mailstop: 1107
Washington, DC 20024
Telephone: 202-205-1084
Fax: 202-205-1272
E-mail: plahm@fs.fed.us
Mr. Marc Ribaudo
USDA Economic Research Service 1800 M St. NW
Room S-4194
Washington, DC 20036-5831
Telephone: 202-694-5488
Fax: 202-694-5774
E-mail: mribaudo@ers.usda.gov
Mr. Johnnie Siliznoff
State Air Quality Specialist
4974 E. Clinton Way, Suite 114
Fresno, CA 93727-1520
Telephone: 559-252-2191
Email: johnnie.siliznoff@ca.usda.gov
Mr. Greg Zwicke
Air Quality Engineer
USDA NRCS AQAC Team
1201 N.E. Lloyd Blvd, Suite 1000
Portland, OR 97232
Telephone: 503-273-2434
Fax: 503-273-2401
E-mail: greg.zwicke@por.usda.gov
