(2) As used in this section and ORS 825.258:
(a) "Hazardous substance" includes any substance defined by the department as hazardous.
(b) "Hazardous waste" has the meaning given that term in ORS 466.005.
(c) "PCB" has the meaning given that term in ORS 466.505 when the PCB is a waste product of an industrial, commercial or other activity. [Formerly 767.458]