• AbbVie
• AmeriCorps
• Applied Ecological Services
• Argonne National Laboratory
• Arkansas Forestry Commission
• Bass Pro Shops
• BBJ Group
• Bolingbrook Park District
• Brick By Brick Construction
• Camp Burgess & Hayward
• Carlson Environmental
• Champaign County Forest Preserve District
• Chicago Zoological Society
• Chip DeAngelo
• City of Minneapolis
• College Possible
• Creber Construction
• Davey Resource Group
• Dupont Pioneer
• Environmental Defense Fund
• Environmental Law and Policy Center (ELPC)
• ESIS Health, Safety and Environmental
• Forest Preserve District of Dupage County
• Golden Gate National Parks Conservancy
• Great River Health Systems
• Honda
• Illinois Department of Natural Resources
• Illinois State Geological Survey
• Illinois State Water Survey
• Indian Prairie School District #204
• Indiana Dunes National Lakeshore
• International Living Future Institute
• Jared Polis for Governor of Colorado
• Johns Manville
• KWS
• Lincoln Park Zoo
• Local Government Commission
• Morton Arboretum
• National Audubon Society
• Natural Resources Defense Council
• Oregon Health & Science University
• Redox Tech
• RIPE Project
• Rust-Oleum
• SRS (Sustainment and Restoration Services)
• St. Charles Park District
• Student Conservation Association
• Teach For America
• The Wilds
• U.S. Army
• U.S. Geological Survey
• University of Illinois at Urbana-Champaign
• University of Illinois at Urbana-Champaign, Entomology Department
• University of Illinois at Urbana-Champaign, Illinois Natural History Survey
• Univesrity of Illinois at Urbana-Champaign, Department of Natural Resources, Biochemistry Laboratory
• Vector Disease Control International
• Vermilion County Soil and Water Conservation District
• Village of Schaumburg
• Water Quality Association
• Wills Burke Kelsey Associates