The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable: There shall be no discharge of process waste water pollutants to navigable waters. [40 FR 1875, Jan. 9, 1975; 40 FR 18172, Apr. 25, 1975] Sec. 427.84 [Reserved]