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