(1) If, under this Act, a function or power is conferred on a person, the
person must perform the function or exercise the power in a way that best
achieves the objects of this Act.
(2) Without limiting subsection (1) , the
achievement of the objects of this Act must if practicable be guided by—
(a)
the waste and resource management hierarchy; and
(b) the following policy
principles (the
"waste and resource management principles" )—