Definitions
| Acronym / Mnemonic | Description |
| ppb | parts per billion |
| ppm | parts per million |
| µgm-3 | micrograms per cubic metre |
| NEPM | National Environmental Protection Measure |
| SEPP | State Environment Protection Policy |
| EPA | Environment Protection Authority of Victoria |
| PM10 | Particle Matter less than 10 micron |
| PM2.5 | Particle matter less than 2.5 micron |
| LVD | Local Visual Distance (measured in kilometres) |
| NO2 | Nitrogen Dioxide (measured in ppb) |
| SO2 | Sulphur Dioxide (measured in ppb) |
| O3 | Ozone (measured in ppb) |