Chapter 283

283.13(3)(b) (b) Minimum compliance.

283.13(3)(b)1. 1. The department with the concurrence of the U.S. environmental protection agency shall modify the requirements of sub. (2) (f) with respect to the discharge of any pollutant other than heat from any point source upon a showing by the owner or operator of the point source satisfactory to the department in a proceeding under s. 283.63 that:

283.13(3)(b)1.a. a. The modified requirements will result in compliance with the requirements of sub. (2) (a) or (5), whichever is applicable;

283.13(3)(b)1.b. b. The modified requirements will not result in any additional requirements for any other point or nonpoint source; and

283.13(3)(b)1.c. c. The modification will not interfere with the attainment or maintenance of water quality which assures protection of public water supplies, which assures the protection and propagation of a balanced population of shellfish, fish, and wildlife and which allows recreational activities in and on the water and that the modification will not result in the discharge of pollutants in quantities which reasonably may be anticipated to pose an unacceptable risk to human health or the environment because of bioaccumulation, persistency in the environment, acute toxicity, chronic toxicity including carcinogenicity, mutagenicity or teratogenicity or synergistic propensities.

283.13(3)(b)2. 2. If an owner or operator of a point source applies for a modification under this paragraph with respect to the discharge of any pollutant, that owner or operator is eligible to apply for modification under this subsection with respect to that pollutant only during the same time period as the owner or operator is eligible to apply for a modification under this paragraph.

283.13(3)(c) (c) Applications for modification.

283.13(3)(c)1. 1. Any application filed under this subsection for a modification of the requirements of sub. (2) (b) as it applies to pollutants identified in sub. (2) (f) shall be filed not later than 270 days after the date of promulgation of an applicable effluent limitation by the department under this chapter.

283.13(3)(c)2. 2. Any application for a modification filed under this subsection does not operate to stay any requirement under this chapter, unless in the judgment of the department the stay or the modification sought will not result in the discharge of pollutants in quantities which may reasonably be anticipated to pose an unacceptable risk to human health or the environment because of bioaccumulation, persistency in the environment, acute toxicity, chronic toxicity, including carcinogenicity, mutagenicity or teratogenicity, or synergistic propensities and there is a substantial likelihood that the applicant will succeed on the merits of the application. If an application is filed under this subsection, the department may condition any stay granted under this subdivision upon the filing of a bond or other appropriate security to assure timely compliance with the requirements from which a modification is sought.

283.13(3)(d) (d) No modification for toxic pollutants. Notwithstanding pars. (a) and (b), the department may not modify any requirement of this subsection or sub. (2) applicable to any toxic pollutant which is on the list promulgated under s. 283.21 (1).

283.13(4) (4) Effluent limitations for public treatment works. Discharges from publicly owned treatment works, except storm water discharges for which a permit is issued under s. 283.33, shall comply with the following requirements:

283.13(4)(a) (a) Secondary treatment for certain works. Secondary treatment by no later than July 1, 1977, for all publicly owned treatment works in existence on that date or approved prior to June 30, 1974, and for which construction is completed within 4 years of approval;

283.13(4)(b) (b) Best practicable waste treatment technology. The application of the best practicable waste treatment technology over the life of the works consistent with the purposes of this chapter by no later than July 1, 1983.

283.13(4)(c) (c) Other limitations for combined sewer overflows. In lieu of pars. (a) and (b), effluent limitations required by subs. (2) (a) and (5) for combined sewer systems tributary to treatment works owned and operated by any metropolitan sewerage district created under ss. 200.21 to 200.65.

283.13(5) (5) More stringent limitations. The department shall establish more stringent effluent limitations than required under subs. (2) and (4) and shall require compliance with such water quality based effluent limitations in any permit issued, reissued or modified if these limitations are necessary to meet applicable water quality standards, treatment standards, schedules of compliance or any other state or federal law, rule or regulation. The department shall require compliance with these water quality based effluent limitations by no later than July 1, 1977, or by a later date as specified in the water quality standard, treatment standard, schedule of compliance or other state or federal law, rule or regulation.

283.13(6) (6) Modification of time limits.

283.13(6)(a) (a) Except as provided under par. (d), the department may modify the time limitations specified under subs. (4) and (5) for any publicly owned treatment works to increase the period of time for compliance with effluent limitations.

283.13(6)(b) (b) The modification of the time limitations mentioned under par. (a) may be granted if the department determines that the construction of treatment works necessary to achieve compliance with effluent limitations cannot be completed within the prescribed time period due to events over which the permittee has little or no control unless the modification is prohibited under par. (d).

283.13(6)(c) (c) The modification of the time limitations mentioned under par. (a) shall be granted if the department determines that the construction of treatment works necessary to achieve compliance with effluent limitations cannot be completed within the prescribed time period due to the unavailability of federal or state funds unless the modification is prohibited under the federal water pollution control act, as amended, 33 USC 1251 to 1376.

283.13(6)(d) (d) Except as provided under par. (c), no modification of the time limitations under par. (a) may extend beyond December 31, 1985.

283.13(7) (7) Adaptive management.

283.13(7)(a) (a) In this subsection, “adaptive management option” means an approach to achieving compliance with a water quality standard adopted under s. 281.15 or a total maximum daily load under 33 USC 1313 (d) (1) (C) approved by the federal environmental protection agency under which a permittee implements a plan to achieve the water quality standard or total maximum daily load through verifiable reductions in the amount of water pollution from point sources and nonpoint sources, as defined in s. 281.16 (1) (e), in a basin or other area specified by the department and uses monitoring data, modeling, and other appropriate information to adjust the plan if needed to achieve compliance.

283.13(7)(b) (b) The department may authorize a permittee to use an adaptive management option to achieve compliance with the water quality standard for phosphorus or an approved total maximum daily load for total suspended solids, and if it does so, the department may specify a date under sub. (5) that provides 4 permit terms for the permittee to comply with its water quality based effluent limitation for phosphorus or total suspended solids.

283.13 History History: 1973 c. 74; 1975 c. 206; 1979 c. 34, 221; 1981 c. 282; 1981 c. 314 s. 146; 1981 c. 393; 1987 a. 27; 1989 a. 56; 1993 a. 16; 1995 a. 227 s. 860; Stats. 1995 s. 283.13; 1997 a. 35; 1999 a. 150 s. 672; 2013 a. 378.

283.13 Cross-reference Cross-reference: See also NR 200- and ch. NR 106, Wis. adm. code.

283.15 283.15 Variances to water quality standard.

283.15(1) (1) Definition. In this section, “variance” means a variance to a water quality standard adopted under s. 281.15.

283.15(2) (2) Request for variance.

283.15(2)(a) (a) If a permit contains a variance or if a permittee anticipates that a reissued permit will include a water quality based effluent limitation under s. 283.13 (5), when the permittee applies for reissuance of the permit the permittee may apply to the department for renewal of the variance or for a variance from the water quality standard that would be used to derive the water quality based effluent limitation.

283.15(2)(am) (am)

283.15(2)(am)1. 1. Within 60 days after the department reissues or modifies a permit to include a water quality based effluent limitation under s. 283.13 (5), the permittee may apply to the department for a variance from the water quality standard used to derive the limitation.

283.15(2)(am)2. 2. After an application for a variance is submitted to the department under subd. 1., and until the last day for seeking review of the secretary’s final decision on the application or a later date fixed by order of the reviewing court, the water quality based effluent limitation under s. 283.13 (5) and the corresponding compliance schedule are not effective. All other provisions of the permit continue in effect except those for which a petition for review has been submitted under s. 283.63. For those provisions for which an application for variance has been submitted under this section, the corresponding or similar provisions of the prior permit continue in effect until the last day for seeking review of the department’s final decision or a later date fixed by order of the reviewing court.

283.15(2)(b) (b) The department shall specify by rule the information to be included in an application under this subsection.

283.15(2)(c) (c) The department may request additional information from the permittee within 30 days after receiving an application under par. (am) 1. The permittee shall provide the additional information within 30 days after receipt of the department’s request. An application is not complete until the additional information is provided to the department.

283.15(2)(d) (d) If the permittee does not provide information as required under par. (b) or (c), the department shall deny the application.

283.15(3) (3) Tentative decision.

283.15(3)(a) (a) The secretary shall issue a tentative decision on an application for a variance under sub. (2) (a) in the notice under s. 283.39 for the reissuance of the permit.

283.15(3)(b) (b) The secretary shall issue a tentative decision on an application for a variance under sub. (2) (am) 1. within 120 days after receipt of a completed application. The department shall circulate the tentative decision to the permittee and to the parties in s. 283.53 (2) (c). If the tentative decision is to grant a variance based upon one or more of the conditions specified in sub. (4) (a) 1. a. to e., the department shall include in the notice under this paragraph a statement on the effect of the variance, if granted, on the designated use of the water body during the term of the underlying permit. The department shall provide a 30-day period for written comments on the tentative decision.

283.15(4) (4) Final decision on variance.

283.15(4)(a) (a)

283.15(4)(a)1. 1. The secretary shall approve all or part of a requested variance, or modify and approve a requested variance if the permittee demonstrates, by the greater weight of the credible evidence, that attaining the water quality standard is not feasible because:

283.15(4)(a)1.a. a. Naturally occurring pollutant concentrations prevent the attainment of the standard;

283.15(4)(a)1.b. b. Natural, ephemeral, intermittent or low flow conditions or water levels prevent the attainment of the standard, unless these conditions may be compensated for by the discharge of sufficient volume of effluent discharges without violating water conservation requirements;

283.15(4)(a)1.c. c. Human caused conditions or sources of pollution prevent the attainment of the standard and cannot be remedied or would cause more environmental damage to correct than to leave in place;

283.15(4)(a)1.d. d. Dams, diversions or other types of hydrologic modifications preclude the attainment of the standard, and it is not feasible to restore the water body to its original condition or to operate such modification in a way that would result in the attainment of the standard;

283.15(4)(a)1.e. e. Physical conditions related to the natural features of the water body, such as the lack of proper substrate, cover, flow, depth, pools, riffles, and the like, unrelated to water quality, preclude attainment of aquatic life protection uses; or

283.15(4)(a)1.f. f. The standard, as applied to the permittee, will cause substantial and widespread adverse social and economic impacts in the area where the permittee is located.

283.15(4)(a)2. 2. The secretary shall deny a requested variance if the permittee fails to make the demonstration required under subd. 1.

283.15(4)(d) (d) The decision under this subsection is reviewable under subch. III of ch. 227, except that ss. 227.40 to 227.46, 227.485 to 227.51 and 227.60 do not apply to the decision under this subsection.

283.15(4m) (4m) Variances for fish farms. In deciding whether to grant an application for a variance for a fish farm, the secretary shall rely on the same guidance documents and other information that would be used by the federal environmental protection agency to review and approve or disapprove the variance as required under 40 CFR 131.14.

283.15(5) (5) Conditions on variances.

283.15(5)(a) (a) A variance applies only to the permittee requesting the variance and to the pollutant specified in the variance. A variance does not affect or require the department to modify the corresponding water quality standard adopted under s. 281.15.

283.15(5)(b) (b) A variance applies for the term established by the secretary, but not to exceed 5 years. The term of the initial variance and any renewals thereof may not exceed the time that the secretary determines is necessary to achieve the water quality based effluent limitation. Initial and interim effluent limitations established under par. (c) 1. apply, as appropriate, for the term of the underlying permit as reissued or modified to implement the decision under sub. (4) (a) 1. or as extended by operation of s. 227.51 (2). Notwithstanding sub. (4) (d), s. 227.51 (2) shall apply for the purposes of continuing the provisions of a permit pending the reissuance of a permit.

283.15(5)(c) (c) The department shall require all of the following in a permit reissued or modified to implement a variance:

283.15(5)(c)1. 1. Compliance with an initial effluent limitation that at the time the variance is approved represents the level currently achievable by the permittee and that is no less stringent than the effluent limitation achieved under the permit before reissuance. At the time a variance is approved a compliance schedule and an interim effluent limitation that is achievable by the permittee during the term of the variance may be specified. The initial and the interim effluent limitations may not be less stringent than a categorical effluent limitation that applies to the permittee under s. 283.13 (2) or (4) or 283.19 or a toxic effluent standard that applies to the permittee under s. 283.21.

283.15(5)(c)2. 2. Investigation of treatment technologies, process changes, pollution prevention, wastewater reuse or other techniques that may result in compliance by the permittee with the water quality standard adopted under s. 281.15, and submission of reports on the investigations at such times as required by the department. The secretary shall modify or waive the requirements specified in this subdivision if the secretary determines, based upon comments received on the tentative decision under sub. (3), that the requirements of this subdivision are:

283.15(5)(c)2.a. a. Reasonably beyond the technical or financial capability of the permittee; or

283.15(5)(c)2.b. b. Unreasonable in light of the conditions specified in sub. (4) (a) 1. a. to e.

283.15(5)(d) (d) The department may impose conditions in the permit as necessary to administer the variance including, but not limited to, additional monitoring requirements.

283.15(6) (6) Renewal. A variance may not be renewed if the permittee did not submit the reports required under sub. (5) (c) 2. or substantially comply with all other conditions of the variance.

283.15(7) (7) Delegation of secretary’s authority. The secretary may designate an officer or employee of the department to make any decision that the secretary is required to make under this section.

283.15(8) (8) No right to a hearing. Notwithstanding s. 227.42, there is no right to a hearing under this section.

283.15(9) (9) Relation to permit review. If the secretary approves part or all of a variance or modifies and approves the variance under this section and the department issues a modified water quality based effluent limitation under s. 283.63 for the same substance, the permittee shall comply with the least stringent of the 2 effluent limitations.

283.15(10) (10) Applicability.

283.15(10)(a) (a) Subsections (2) to (5) do not apply if the water quality based effluent limitation results from the decision of the department under s. 283.63 to make the water quality based effluent limitation less stringent than the effluent limitation in the permit as issued, reissued or modified.

283.15(10)(b) (b) Subsections (2) to (5) apply if the water quality based effluent limitation results from the decision of the department under s. 283.63 to make the water quality based effluent limitation more stringent than the effluent limitation in the permit as issued, reissued or modified.

283.15(10)(c) (c) This section does not apply to the issuance, reissuance or modification of a permit to incorporate a toxic effluent standard or prohibition promulgated by rule under s. 283.11 (4) or 283.21.

283.15(11) (11) Water quality standards review. As part of the review of water quality standards under s. 281.15 (6), as required by 33 USC 1313 (c) (1), the department shall review the variances to water quality standards approved under s. 283.15 or 283.16. The department shall receive information regarding these variances at the public hearing held under s. 281.15 (6). If the department determines that a water quality standard to which a variance applies is attainable, the department shall modify the standard or variance accordingly at the time the permit containing the variance is reissued, modified, or revoked and reissued.

283.15(12) (12) Federal requirements. Notwithstanding any of the provisions of this section, the department shall comply with the provisions of 40 CFR 131.14 when approving and implementing a variance under this section.

283.15 History History: 1973 c. 74; 1979 c. 221 s. 2202 (39); 1985 a. 29; 1987 a. 27, 60; 1995 a. 227 s. 861; Stats. 1995 s. 283.15; 2011 a. 32; 2015 a. 205; 2017 a. 21.

283.15 Cross-reference Cross-reference: See also ch. NR 212 and s. NR 200.01, Wis. adm. code.

283.16 283.16 Statewide variance for phosphorus.

283.16(1) (1) Definitions. In this section:

283.16(1)(a) (a) “Basin” means the drainage area identified by an 8-digit hydrologic unit code, as determined by the U.S. Geological Survey.

283.16(1)(b) (b) “Category” means a class or category of point sources specified by the department under s. 283.13 (1) or publicly owned treatment works.

283.16(1)(d) (d) “Existing source” means a point source that was covered by a permit on December 1, 2010.

283.16(1)(e) (e) “Major facility upgrade” means the addition of new treatment equipment and a new treatment process.

283.16(1)(g) (g) “Nonpoint source” has the meaning given in s. 281.16 (1) (e).

283.16(1)(h) (h) “Target value” means the following:

283.16(1)(h)1. 1. For a point source in a watershed for which a federally approved total maximum daily load under 33 USC 1313 (d) (1) (C) is in effect on April 25, 2014, the number of pounds of phosphorus that would be discharged from the point source during a year if the point source complied with its effluent limitation based on the total maximum daily load in effect on April 25, 2014.

283.16(1)(h)2. 2. For a point source in a watershed for which no federally approved total maximum daily load under 33 USC 1313 (d) (1) (C) is in effect on April 25, 2014, the number of pounds of phosphorus that would be discharged from the point source during a year if the average concentration of phosphorus in the effluent discharged by the point source during the year was 0.2 milligrams per liter.

283.16(1)(i) (i) “Water quality based effluent limitation” means an effluent limitation under s. 283.13 (5), including an effluent limitation based on a total maximum daily load under 33 USC 1313 (d) (1) (C) approved by the federal environmental protection agency.

283.16(2) (2) Initial determination concerning the water quality standard for phosphorus.

283.16(2)(a) (a) The department of administration, in consultation with the department of natural resources, shall determine whether attaining the water quality standard for phosphorus, adopted under s. 281.15, through compliance with water quality based effluent limitations by point sources that cannot achieve compliance without major facility upgrades is not feasible because it would cause substantial and widespread adverse social and economic impacts on a statewide basis. The department of administration may make separate determinations under this paragraph for statewide categories of point sources.

283.16(2)(b) (b) The department of administration shall include all of the following in its determination under par. (a), based on water quality based effluent limitations for phosphorus determined by the department of natural resources:

283.16(2)(b)1. 1. A calculation of the statewide cost of compliance with water quality based effluent limitations for phosphorus by point sources that cannot achieve compliance without major facility upgrades.

283.16(2)(b)2. 2. A calculation of the statewide per household cost for water pollution control by publicly owned treatment works that cannot achieve compliance with water quality based effluent limitations for phosphorus without major facility upgrades, including the projected costs of compliance with those water quality based effluent limitations, and a calculation of the percentage of median household income the per household cost represents.

283.16(2)(b)4. 4. A determination of whether the cost of compliance with water quality based effluent limitations for phosphorus by point sources that cannot achieve compliance without major facility upgrades would cause substantial adverse social and economic impacts on a statewide basis.

283.16(2)(b)5. 5. A determination of whether the cost of compliance with water quality based effluent limitations for phosphorus by point sources that cannot achieve compliance without major facility upgrades would cause widespread adverse social and economic impacts on a statewide basis.