Section NR 217.12 - General(1) Water quality based effluent limitations for phosphorus shall be included in a permit whenever the department determines: (a) The discharge from a point source contains phosphorus at concentrations or loadings which will cause, has the reasonable potential to cause or contribute to an exceedance of the criteria in s. NR 102.06 in either the receiving water or downstream waters; and(b) The technology based effluent limitation or the alternative treatment technology limitation calculated under s. NR 243.13 is less stringent than necessary to achieve the applicable water quality standard for phosphorus in s. NR 102.06.(2) If the technology based limitation expressed as a concentration is more stringent than the water quality based effluent limitation expressed as a concentration under s. NR 217.13, then the technology based limit shall be included in the permit, along with any mass limitations calculated under this subchapter as required under s. NR 217.14(1) and (3).Wis. Admin. Code Department of Natural Resources NR 217.12
CR 10-035: cr. Register November 2010 No. 659, eff. 12-1-10.