Section 19 of the Principal Act is amended by inserting after subsection (1) the following subsection:

(1AA)  However, the Authority is not to certify a forest practices plan involving the clearance and conversion of a threatened native vegetation community unless the Authority is satisfied of one or more of the following:

(a) the clearance and conversion is justified by exceptional circumstances;

(b) the activities authorised by the forest practices plan are likely to have an overall environmental benefit;

(c) the clearance and conversion is unlikely to detract substantially from the conservation of the threatened native vegetation community;

(d) the clearance and conversion is unlikely to detract substantially from the conservation values in the vicinity of the threatened native vegetation community.