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Contacts

Tia Klein, PE

Senior Vice President

Email: [email protected]

Phone: 248.862.7699

Location: Macomb, Michigan

Accreditations

  • Professional Engineer - MI
  • EGLE Stormwater Management Operator -
  • MDOT Computerized Office Technician -
  • MDOT Field Manager -
  • MDOT Bituminous Paving Inspection -

John Willemin, PE

Senior Vice President

Email: [email protected]

Phone: 616.464.3801

Location: Grand Rapids, Michigan

Associations

  • American Water Works Association/Michigan Section - Chair
  • Water Environment Federation - Member
  • Michigan Water Environment Association - Member

Accreditations

  • Professional Engineer - MI, IN, WI

Greg Tkacz, PE, LEED AP BD+C

Senior Vice President

Email: [email protected]

Phone: 513.247.8563

Location: Cincinnati, Ohio

Associations

  • American Society of Heating, Refrigerating, and Air Conditioning Engineers - Member
  • National Society of Professional Engineers - Member
  • International District Energy Association - Member
  • Society for Marketing Professionals Services - Member

Accreditations

  • Professional Engineer - GA, PA, KY, OH
  • LEED Accredited Professional Building Design + Construction -

Peter Lepczyk, CPG

Vice President/Senior Hydrogeologist

Email: [email protected]

Phone: 616.464.6238

Location: Traverse City, Michigan

Associations

  • American Institute of Professional Geologists - Member
  • National Groundwater Associations - Member

Accreditations

  • Certified Professional Geologist - American Institute of Professional Geologists
  • Site Worker, Site Manager, and Supervisor Training - HAZWOPER
  • ICS-100 Introduction to Incident Command System (ICS) - FEMA
  • ICS-200 ICS for Single Resources and Initial Action Incidents - FEMA

Paul French

Senior Hydrogeologist

Email: [email protected]

Phone: 269.544.6958

Location: Kalamazoo, Michigan

Jeff Brown, PE

Senior Vice President

Email: [email protected]

Phone: 517.887.4016

Location: Lansing, Michigan

Associations

  • Michigan Water Environment Association - Collections Systems Committee
  • Michigan Water Environment Association - Select Society of Sanitary Sludge Shovelers
  • Water Environment Association/Ohio - Member
  • Water Environment Federation - Member

Accreditations

  • Professional Engineer - MI

Ryan Musch, PE, LEED AP, SITES AP

Senior Vice President/Senior Civil Engineer

Email: [email protected]

Phone: 616.464.3905

Location: Grand Rapids, Michigan

Associations

  • Green Building Certification Institute - Member
  • LEEDuser - Member
  • US Green Building Council/West Michigan Chapter - Member
  • Society for College and University Planning - Member
  • National Council of Examiners for Engineering and Surveying - Member

Accreditations

  • Professional Engineer - MI, IN
  • SITES AP -
  • LEED AP -

Jon Carroll, PE

Vice President/Senior Bridge Engineer

Email: [email protected]

Phone: 513.247.8571

Location: Cincinnati, Ohio

Associations

  • National Council of Examiners for Engineering and Surveying - Record Holder
  • Association for Bridge Construction and Design/ Southwest Ohio Chapter - Board Member

Accreditations

  • Professional Engineer - IN, OH, SC, GA, FL, NC
  • NHI Safety Inspection of In-Service Bridges - Certification

Courtney Dunaj

Senior Hydrogeologist

Email: [email protected]

Phone: 269.544.6952

Location: Kalamazoo, Michigan

Associations

  • Michigan Association of Environmental Professionals -
  • Women Among Women Networking Group -

Accreditations

  • -

Scott Hopkins

Senior Surveyor

Email: [email protected]

Phone: 269.544.6959

Location: Kalamazoo, Michigan

Associations

  • Michigan Society of Professional Surveyors - Southwest Chapter Director
  • Professional Land Surveyors of Ohio - Member

Accreditations

  • Professional Land Surveyor - Michigan and Ohio
  • FAA sUAS Remote Pilot -

Tony Kuhtz, PE, LEED AP

Vice President/Senior Electrical Engineer

Email: [email protected]

Phone: 616.464.3722

Location: Grand Rapids, Michigan

Associations

  • National Society of Professional Engineers - Member
  • Michigan Society of Professional Engineers - Member
  • Illuminating Engineering Society/West Michigan - Member
  • International Council of Shopping Centers - Member

Accreditations

  • Professional Engineer - MI, IL
  • LEED Accredited Professional -

Maria Sedki, PE

Vice President/Senior Civil Engineer

Email: [email protected]

Phone: 248.324.1228

Location: Farmington Hills, Michigan

Associations

  • Arab American Association of Engineers & Architects - Member
  • Michigan Water Environment Association - Member
  • Water Environment Federation - Member

Accreditations

  • Professional Engineer - MI, OH, TX, IN
  • NASSCO PACP/ MACP/ LACP -

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