It had originally been envisaged that these changes would be made both via changes to the HSNO Act and via associated changes to the related secondary legislation, which is known as the "Methodology Order". However, in the process of the bill being drafted, it was decided that it would be better to put all of these changes into the Act itself. It had originally been intended that the EPA would undertake a subsequent consultation as part of the process of amending the Methodology Order, and, as a result, some of the details of those changes were not consulted on in the 2019 consultation. However, there will still be an opportunity for public submissions on proposed changes to the Methodology Order as part of the public submissions that will occur during the select committee process.