Section NR 106.88 - Application of and compliance with chloride effluent limitations in a permit(1) CHLORIDE LIMITATIONS IN PERMITS. If chloride water quality-based effluent limitations are deemed to be necessary under s. NR 106.85, the department shall use all of the following procedures to include the calculated limitations in the permit with an appropriate compliance schedule as necessary and appropriate: (a) Effluent limitations based on an acute criterion shall be expressed in permits as daily maximum limitations, and effluent limitations based on a chronic criterion shall be expressed in permits as weekly average limitations.(b) Effluent Limitations shall be expressed in a permit consistent with the protocols in s. NR 106.07(3) to (5).(c) Mass limitations calculated under s. NR 106.07(2) and (9) shall be included in the permit in addition to concentration based effluent limitations whenever water quality-based effluent limitations are determined to be necessary.(d) A compliance schedule for a water quality-based effluent for chloride may be granted in a permit if necessary and appropriate and shall be consistent with the requirements under s. NR 106.117.(2) VARIANCE CONDITIONS. The department may include all of the following conditions in the permit instead of the conditions specified in sub. (1) whenever a chloride variance is granted under s. NR 106.83:(b) An interim limitation for chloride that is effective on the date of permit issuance.(c) Tier 1 source reduction.(d) A target value or a target limitation with an appropriate compliance schedule, which is effective on the last day of the permit.(e) If appropriate, either tier 2 or tier 3 source reduction if the department believes that any of the additional conditions in the tier 2 or tier 3 source reduction activities are reasonable and practical within the term of the permit.(3) UNITS FOR TARGET VALUES. Interim limitations, target values, and target limitations established under sub. (2) shall be expressed in the permit as a concentration limitation, in units of mg/L or equivalent units.(5) MONITORING. A determination of compliance with interim, target, and calculated limitations and comparison with target values shall be based upon 24-hour composite samples. The department shall determine on a case-by-case basis the monitoring frequency to be required for these limitations.Wis. Admin. Code Department of Natural Resources § NR 106.88
Cr. Register, January, 2000, No. 529, eff. 2-1-00; CR 09-123: am. (3) Register July 2010 No. 655, eff. 8-1-10.Amended by, CR 15-085: r. and recr. (1) to (3), r. (4), r. and recr. (5), r. (6) Register August 2016 No. 728, eff. 9/1/2016