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Laurel Sukup
Section Chief

Approved Green Tier/EMS auditors

The Green Tier law requires that participants in the program have an Environmental Management System (EMS) audited by an "outside environmental auditor" at least every third year. In order to assist participating Green Tier companies identify who is qualified to be an "outside environmental auditor," staff have developed guidance [PDF] and a list of auditors that have been recognized under the guidance. The term outside environmental auditor is defined in s. 299.83(1)(dr), Wis. Stats., as "an auditor who is functionally or administratively independent of the facility or activity being audited."

The following auditors have demonstrated to the department that they meet the requirements of an outside environmental auditor. This list is not exclusive. We encourage others to follow the guidance linked above and document their training and experience in order to be included on the list.

Karissa Anderson
Perfect Environmental Performance, LLC
529 North Main St
Cottage Grove WI 53527
Tim Anderson
Perfect Environmental Performance, LLC
529 N. Main St.
Cottage Grove WI 53527
Tom Bennett
Total Quality Systems LLC
3370 Lake Forest Park
Sturgeon Bay WI 54235
Sarah Burton
Kestrel Management LLC
199 E. Badger Rd., Suite 200
Madison WI 53713
Curtis E. Dungey
Foth Infrastructure & Environment, LLC
2737 South Ridge Road Suite 600
PO Box 12326
Green Bay WI 54307-2326
Marie Dunkle
M.K. Dunkle Consulting
736 Saga Mountain Road
Tiger GA 30576
Colin Grey
Cavendish Scott, Inc
254 South Downing Street
Denver CO 80209
Debbie Hannan
Corporate Quality Manager
Cortec Corporation
4119 White Bear Parkway
St. Paul MN 55110
651-429-1100 Ext. 192
Debra Jacobson, CSP
Illinois Sustainable Technology Center
Prairie Research Institute
University of Illinois at Urbana Champaign
1010 Jorie Boulevard, Ste 338
Oak Brook, Illinois  60523
Douglas B. Johnson, Ph.D.
Environmental Intelligence, Inc.
774 North Bend
Amery WI 54001
Cell 612-387-3430
Kevin Lehner
Environmental Compliance Systems, Inc.
523 College Street
Lake Mills WI 53551
Mark Mattke
2040 Douglas Drive North
Golden Valley MN 55422
Mark McDermid
WI Manufacturing Extension Partnership (WMEP)
2601 Crossroads Drive
Suite 145
Madison, WI 53718
Christian A. Mielke, P.E.
E2M Environmental and Engineering Management
W223N7343 Carole Court
Sussex WI 53089
Jim Mueller
James H Mueller, LLC
4319 Highway 38
Franksville WI 53126
Wendy Nadan
Nadan Consulting Ltd.
151 Montgomery Blvd.
Orangeville, ON L9W 5C1
Fax 519-940-9193
Karen Reaume
Sierra Environmental LLC
47102 S. Chigwidden Drive
Northville MI 48167
Steve Rowley
Rettew Associates
3020 Columbia Ave
Lancaster, PA 17603
Hugh Tousey
Eagle Group USA, Inc.
6001 North Adams Rd. Ste 205
Bloomfield Hills MI 48304


Last revised: Tuesday March 20 2018