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S - North American Proficiency Testing Program-Oversight Committee

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Chair
Spargo, John T.
Term: Jan 01, 2023 - Dec 31, 2024
Pennsylvania State University
111 Ag Analytical Srvcs Lab
University Park PA 16802 US
Tel: 814-865-9155
Send message to John Spargo

Vice Chair
Breker, John S.
Term: Jan 01, 2023 - Dec 31, 2024
PO Box 510
804 Hwy 15 W
Northwood ND 58267-0510 US
Tel: 701-587-6010
Send message to John Breker

Past Chair
Nathan, Manjula V.
Term: Jan 01, 2023 - Dec 31, 2024
University of Missouri
23 Mumford Hall
1100 University Avenue
Columbia MO 65211-0001 US
Tel: 573-882-3250
Send message to Manjula Nathan

Member
Farrell, Richard E.
Term: Jan 01, 2022 - Dec 31, 2024
University of Saskatchewan
Department of Soil Science
51 Campus Drive
Saskatoon SK S7N 5A8 CANADA
Tel: 306-966-2772
Send message to Richard Farrell

Member
Graff, James Joseph
Term: Jan 01, 2022 - Dec 31, 2024

Liaison
Harms, Deborah Sue
Term: Jan 01, 2024 - Dec 31, 2026

Member
Joern, Brad C.
Term: Jan 01, 2024 - Dec 31, 2026
701 Arlann Dr
Pekin IL 61554-5201 US
Tel: 765-427-2898
Send message to Brad Joern

Member
Monteith, Steven E.
Term: Jan 01, 2024 - Dec 31, 2026
3801 Eagle Ridge Rd Apt 7
Lincoln NE 68516-7023 US
Tel: 403-437-5335
Send message to Steven Monteith

Member
Mylavarapu, Rao S.
Term: Jan 01, 2022 - Dec 31, 2024
Soil & Water Sciences Dept
Box 110290, 171 McCarty Hall
Gainesville FL 32611-0290 US
Tel: 352-294-3113
Send message to Rao Mylavarapu

Member
Tarkalson, David D.
Term: Jan 01, 2022 - Dec 31, 2024
3793 N 3600 E
Usda Ars - Nwisrl
Kimberly ID 83341-5076 US
Tel: +1 (208) 420-3097
Send message to David Tarkalson

Member, Ex Officio
Chapman, Susan M.
Term: Jan 01, 2006 - Dec 31, 2100
5585 Guilford Rd
Madison WI 53711-5801 US
Tel: 6082738080
Send message to Susan Chapman

Member, Ex Officio
Edwardson, Lacey
Term: Aug 01, 2024 - Dec 31, 2100
5585 Guilford Rd
Madison WI 53711-5801 US
Tel: 608-268-4953
Send message to Lacey Edwardson

Member, Ex Officio
Hopkins, Bryan G.
Term: Sep 01, 2019 - Dec 31, 2100
Brigham Young University
4105 LSB
Provo UT 84602 US
Tel: 801-422-2185
Send message to Bryan Hopkins

Member, Ex Officio
Lawley, John R.
Term: Jan 01, 2011 - Dec 31, 2024
Utah State University
9410 Old Main Hill
Logan UT 84322-0001 US
Tel: 435-757-8117
Send message to John Lawley

Member, Ex Officio
Turco, Ronald F.
Term: Jan 01, 2021 - Dec 31, 2024
615 Mitch Daniels Blvd
AgAd, Room 126
West Lafayette IN 47907-2053 US
Tel: (765) 494-8362
Send message to Ronald Turco