- Region of Waterloo (Eric Hodgins, Manager, Hydrogeology and Source Water)
- University of Waterloo (Les Van Dongen, Supervisor, Grounds Section)
- Road Equipment Links (Robert Roszell, President)
- Sustainable Technologies Evaluation Program (Tim Van Seters, Manager)
- Boot's Landscaping and Maintenance (Gerald Boot, President)
- MPS Properties Services (James Monk, President)
- Clintar Landscape Management (John O'leary, VP)
- BP Landscaping (Brian Perras, President)
- Urban Meadows (William Jordan, Proprietor)
- Courtland Property Management (John Veldman)
- Moser Landscape Group
- GO Transit
- Art Lofranco
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