- Abi Group
- ACI
- Akron Roads
- Allens Asphalt
- Ararat Rural City Council
- Australian Rail Track Corporation
- Australand
- Barwon Water
- Bathurst Regional Council
- BHP
- Boral
- Brown Brothers
- Burbank Homes
- Cardinia Shire Council
- Central Highlands Water
- Country Fire Authority
- Department of Defence
- Department of Sustainability and Environment
- Cadia Hill Gold Mine
- Caltex
- Central Highlands Water
- Chiquita Mushrooms
- City of Geelong
- City of Greater Shepparton
- City of Hume
- City of Melbourne
- Colac Otway Shire
- Country Energy
- DESA
- EDI Downer
- Fulton Hogan
- GHD
- Goulburn Broken Catchment Management
- Goulburn Murray Water
- Goulburn Valley Water
- GrainCorp
- Grampians Water
- GWM Water
- Hansen Yuncken
- Hume City Council
- HVP Plantations
- Latrobe University
- Leighton
- Mackay Regional Council
- Melbourne City Council
- Melbourne Water
- Mitchell Council
- Pioneer Road Services
- Qantas
- Queensland Department of Main Roads
- Parks Victoria
- Pioneer Road Services
- PowerCorp
- Road Traffic Authority NSW
- Shell Bitumen
- South East Water
- South Gippsland Shire Council
- SP AusNet
- Spotless Services
- Strathbogie Shire Council
- Sunshine Coast Regional Council
- Telstra
- Tennis Australia - National Tennis Centre - Melbourne Park
- Thiess Services
- Transfield
- United Group Services
- VicRoads
- Yarra Valley Water
- Wellington Shire Council
- Werribee Open Range Zoo
- Western Water
- William Adams
- Wyndham City Council
- plus numerous other local councils, authorities and private businesses
