9. Section 42 of the Principal Act is amended by inserting after paragraph (i) the following paragraphs:
“(ia) exempting, or refusing to exempt, an installation from the application of subsection 9A (1) under subsection 23C (1);
(ib) imposing conditions on an exemption under subsection 23C (4);
(ic) granting, or refusing to grant, an essential use classification under subsection 23E (1);
(id) imposing conditions on an essential use classification under subsection 23E (4);
(ie) revoking an essential use classification under subparagraph 23F (3) (a) (i);
(if) varying an essential use classification under subparagraph 23F (3) (a) (ii);”.