Okla. Admin. Code § 35:17-7-2
In addition to the terms defined in Section 10-9.1 of Title 2 of the Oklahoma Statutes, the following terms when used in this subchapter shall have the following meaning unless the context clearly indicates otherwise:
"Commercial poultry waste applicator" means any person who engages in commercial land application of more than ten (10) tons of poultry waste per year. Any farmer while working for a neighbor in agricultural production, and not advertising, nor holding themselves out to be in the business of land applying poultry waste, shall not be classified as a commercial poultry waste applicator, but as a private poultry waste applicator.
"Discharge" means any release by pumping, pouring, emptying, or dumping of poultry waste directly or through a manmade conveyance into waters of the State of Oklahoma.
"Private poultry waste applicator" means any person who is not a commercial poultry waste applicator but engages in the land application of more than ten (10) tons of poultry waste per year for purposes including, but not limited to, producing any agricultural commodity on property owned or rented by the person or the person's employer, or if applied without compensation other than trading of personal services between producers of agricultural commodities, on the property of another person.
"Runoff" means any release by leaking, escaping, seeping, or leaching of poultry waste into waters of the State.
Okla. Admin. Code § 35:17-7-2