ASBG members have been subject to the application of the NSW EPA's Approved Methods for air Modelling. Use of Approved Methods should only be applied at the planning level, but is being more often applied to existing sites. EPA's application on existing sites has been a creeping issue, which ignores the grandfathering provisions on air pollution equipment, assumes hypothetical represent real emissions and hence a need to meet newer air emission assessment criteria with no warning that it is to apply. ASBG wrote a letter asked the EPA to clarify its policy on the use of Approved Methods to existing sites and if used as a default method how it will be applied and interpreted.
 EPA Response on Approved Methods | 1591 kB |
| ASBG Approved Methods Letter 2018 | 610 kB |
