Unless the context requires otherwise, as used in this Division:

1. (1) “Chemical Process Mine” means a mining and processing operation for metal-bearing ores that uses chemicals to dissolve metals from ores.
2. (2) “Department” means the Department of Environmental Quality.
3. (3) “Guidelines” means this body of rules contained in OAR 340-043-0080 through 340-043-0180.
4. (4) “Positive Exclusion of Wildlife” means the use of such devices as tanks, pipes, fences, netting, covers and heap-leach drip-irrigation emitters or covered emitters.
5. (5) “Tailings” means the spent ore resulting from the milling and chemical extraction process.

Statutory/Other Authority

ORS 468.020

Statutes/Other Implemented

ORS 468.030 & 517.952

History

DEQ 23-1992, f. & cert. ef. 9-8-92