(1) The board hereby adopts and incorporates by reference herein 40 CFR Part 133 which is a series of federal agency rules setting forth minimum treatment requirements for secondary treatment or the equivalent for publicly owned treatment works (POTW's) and for certain industrial categories. Copies of 40 CFR Part 133 may be obtained from the Department of Environmental Quality, PO Box 200901, Helena, MT 59620-0901.

(2) The minimum treatment requirements set forth in 40 CFR Part 133 may be incorporated into a wastewater discharge permit for a publicly owned treatment works.