Oregon Revised Statutes Public Health and Safety § 467.120

(a) “Agricultural operations” means the current employment of land and buildings on a farm for the purpose of obtaining a profit in money by raising, harvesting and selling crops or by the feeding, breeding, management and sale of, or the produce of, livestock, poultry, fur-bearing animals, vermiculture products or honeybees or for dairying and the sale of dairy products or any other agricultural or horticultural operations or any combination thereof including the propagation and raising of nursery stock and the preparation and storage of the products raised for human use and animal use and disposal by marketing or otherwise by a farmer on such farm.

(b) “Forestry operations” means an activity related to the growing or harvesting of forest tree species on forestland as defined in ORS 526.324 (1).

(a) The mining or processing of rock, aggregate or minerals within one-half mile of a noise sensitive area, if:

(b) Any mining or processing of rock, aggregate or minerals within one-half mile of a noise sensitive area during the period subject to the nighttime noise emission standards established by the Environmental Quality Commission under ORS 467.030.