First published on Wed 28 Apr 2021 22.14 EDT Federal Labor is demanding the Morrison government âurgently explainâ more than $30m in offsets it bought for the western Sydney airport, joining the Greens in calling for an investigation. And the New South Wales opposition wants a wider inquiry into the management of the stateâs environmental offsets scheme and tens of millions of dollars in offset credits purchased from properties linked to consultants whose company advised the government on development in western Sydney. The NSW Greens have said they will also push for a parliamentary inquiry. Guardian Australia revealed that an environmental consultant who holds interests in a property that made more than $40m selling conservation offsets to governments has interests in two other properties â Hampden Vale and Hardwicke â that have sold tens of millions of dollars more.