- Waste Management
- Will County Forest Preserve
- Tinley Park Park District
- Frankfort Park District
- Peotone Park District
- Mokena Park District
- Lincoln-Way High School
- Stagg High School
- Unocal Pipe Line
- Chicap Pipe Line
- Northern Illinois Gas
- Wick Buildings
- Morton Buildings
- Jim Clark Real Estate
- Beary Landscaping
- Ashland Propane
- Metrolift Propane
- R&S Waste Oil
- Citco
- Mobile Chemical
- Village of Frankfort
- Village of Park Forest
- Village of Richton Park
- Prestwick Country Club
- Lansing Country Club
- Silverlake Country Club
- Lincolnshire Country Club
- Flossmoor Country Club
- Green Garden Country Club
- Alps Development
- Brutti & Associates Development
- Illinois Tollway Authority
- Governor’s State University
- University of Illinois
- Joe Schudt & Associates Engineers
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- Ruettiger & Tonelli Associates, Eng.
- Set Environmental
- Mid-American Environmental
- Franciscan Sisters
- Salvation Army
- HUD
- Illinois Medical District
- Alsip Nursery
- Nutra Sweet
- Panduit Corporation
- Simon Malls
- FBI Buildings
- Aspen Builders
- Cleary Buildings
- Bernardin Landscape
- Gorman Landscape
- Brickman Landscape
- Trevarthan Landscape
- Hartman Landscape
- White Castle
- Auto Zone
- Bimba Manufacturing
- Blue Beacon Truck Wash
- Gallagher Asphalt
- Illinois Tool Works-Deltar
- Cleveland Steel
- Sugar Steel
- Desoto Chemical
- Tenneco Incorporated
- Ace Hardware Paint Division
- International Honeycomb
- First United Bank
- Farmers State Bank
- And hundreds more…
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