(1) The following discharges do not require NPDES permits:
- (a) Any introduction of pollutants from non-point source agricultural and silvicultural activities, including stormwater runoff from orchards, cultivated crops, pastures, range lands, and forest lands; and
- (b) Return flows from irrigated agriculture.
- (2) Discharges into a septic tank connected only to a subsurface drain field do not require a state-issued permit under T.C.A. § 69-3-108.
Authority: T.C.A. §§ 4-5-201, et seq., and 69-3-101, et seq. Administrative History: Original rule filed November 20, 2013; effective February 18, 2014. Amendments filed February 14, 2022; effective May 15, 2022.