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Laurel Sukup
Sustainability & Business Support

Approved Green Tier/EMS auditors

Green Tier law, §299.83, requires that participants in the program have their environmental management system (EMS) audited by an “outside environmental auditor” at regular intervals; every third year for Tier 1 participants and every year for those in Tier 2. The law also states that the outside environmental auditor be approved by the department, §299.83(7m).

A list of approved Green Tier auditors is below. These auditors have demonstrated to the department that they meet the requirements of an outside environmental auditor, as defined in Green Tier law.

If you are interested in becoming an approved Green Tier auditor, or would like your current auditor to be approved, we have developed an auditor approval process.

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
Liz Hillgren
Kestrel Management LLC
316 N Ann Arbor St
Saline MI 48176
Debra Jacobson, CSP
Illinois Sustainable Technology Center
Prairie Research Institute
University of Illinois at Urbana Champaign
1010 Jorie Boulevard, Ste 338
Oak Brook IL  60523
Douglas B. Johnson, Ph.D.
Environmental Intelligence, Inc.
774 North Bend
Amery WI 54001
Cell 612-387-3430
Rose Koronkiewicz
BSI Group America Inc.
12950 Worldgate Dr, Ste 800
Monument II
Herndon VA 20170
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.
901 Tower Dr
Troy MI 48098
Chris Unke
Adapt Management Consulting
167 Main St
Sullivan WI 53178
Mark Zimmermann
Foth Infrastructure & Environment, LLC
2121 Innovation Court, Ste 300
De Pere WI 54115
Last revised: Wednesday October 16 2019