NR 217.17 HistoryHistory: CR 10-035: cr. Register November 2010 No. 659, eff. 12-1-10. NR 217.18NR 217.18 Watershed adaptive management option. NR 217.18(1)(1) General. The adaptive management option is a strategy to achieve the phosphorus water quality criteria in s. NR 102.06 in the most economically efficient manner, and as soon as possible, taking into consideration the contributions of phosphorus from point and nonpoint sources in a watershed. NR 217.18(2)(2) Application. If requested by the permittee in the permit application for reissuance and if approved by the department, the permittee may implement a watershed adaptive management approach under this section as a means to achieve compliance with the phosphorus water quality standards in s. NR 102.06. The department may approve and authorize the adaptive management option in this section only if the permittee demonstrates and the department concurs that all of the following conditions are met: NR 217.18(2)(a)(a) The exceedance of the applicable phosphorus criterion in s. NR 102.06 is caused by phosphorus contributions from both point sources and nonpoint sources. NR 217.18(2)(b)(b) Either the sum of the nonpoint sources and the permitted municipal separate storm sewer system contribution of phosphorus to the receiving water is at least 50 percent of a total contribution within the watershed of the receiving water where the applicable phosphorus criterion in s. NR 102.06 is exceeded; or the permittee demonstrates that the applicable phosphorus criterion cannot be met in the watershed without the control of phosphorus from nonpoint sources. NR 217.18(2)(c)(c) Documentation that the proposed water quality based effluent limit in the applicant’s permit will require filtration or other equivalent treatment technology to achieve compliance. NR 217.18(2)(d)(d) The permittee has submitted an adaptive management plan that identifies specific actions to be implemented that will achieve compliance with the applicable phosphorus criterion in s. NR 102.06 through verifiable reductions of phosphorus from point and nonpoint sources in the watershed. At a minimum, the plan shall include the following: NR 217.18(2)(d)1.1. An analysis of the levels of phosphorus in the permittee’s effluent and significant sources of point and nonpoint phosphorus loadings in the watershed. NR 217.18(2)(d)2.2. Goals and measures for determining whether the actions identified in the plan are effective in achieving compliance with the applicable phosphorus criterion in s. NR 102.06. NR 217.18(2)(d)3.3. Identification of any anticipated partners that will assist in implementing the phosphorus reductions to achieve compliance with the applicable phosphorus criterion in s. NR 102.06, including the partner’s level of support for the plan. NR 217.18(2)(d)4.4. A demonstration that the permittee has the ability to fund and implement the plan either individually, or in conjunction with other permittees and nonpoint sources, or other partners, including municipal and county governments, in the watershed. Plans should include any contracts reflecting commitments by partners to implement applicable actions. NR 217.18(3)(3) Permit terms and conditions. If the department determines that the permittee has provided all necessary information and the conditions in sub. (2) have been met, it may issue a permit that includes watershed adaptive management actions to achieve compliance with the applicable phosphorus criterion in s. NR 102.06 on a schedule approved by the department. At a minimum, the permit shall include the following: NR 217.18(3)(a)(a) Monitoring in the receiving water at locations and times established in the permit to assess phosphorus loading and to document progress toward achieving the applicable phosphorus criterion in s. NR 102.06. The department shall also require permittees to monitor, record and report the mass and concentration of phosphorus in the effluent at an appropriate frequency specified by the department in the permit. NR 217.18(3)(b)(b) Requirements to design and implement the actions identified in the permittee’s approved adaptive management plan in accordance with the goals and measures identified in the plan and any compliance schedule included in the permit. NR 217.18(3)(c)(c) Requirements to optimize the permittee’s treatment system to control phosphorus. NR 217.18(3)(d)(d) Reporting procedures and deadlines for all monitoring, assessment and data gathering requirements in the plan. Permittees shall be required to file and the department will review an annual report that identifies implementation of actions in the plan that were completed the previous year, and that documents any progress in achieving the goals and measures in the adaptive management plan. Adjustment or corrections, to the extent that they are needed, will be incorporated into the permit via permit modification procedures. NR 217.18(3)(e)1.1. All permits issued under the adaptive management option in this section shall include water quality based effluent limitations calculated consistent with the federal water pollution control act, 33 USC 1251 to 1387, that are established according to s. NR 217.13 or a US EPA approved TMDL. These limitations shall take effect in accordance with the timeframe established in this paragraph, or pursuant to par. (g) if the adaptive management option is terminated. NR 217.18(3)(e)2.2. In the first permit reissuance term following approval by the department under sub. (2), the initial interim effluent limitation shall be no higher than 0.6 mg/L of total phosphorus expressed as a six-month average. An effluent limit not to exceed 1.0 mg/L of total phosphorus expressed as a monthly average shall also be included in the permit. The department may allow the permittee a compliance schedule that may not exceed five years if necessary to meet this interim limitation. NR 217.18(3)(e)3.3. If the permittee has met all of the requirements of its previous permit, but the monitoring data of the receiving water indicate that the applicable phosphorus water quality criterion in s. NR 102.06 has not been met by the time the first permit issued under the adaptive management option expires, the department may issue a subsequent adaptive management permit. The subsequent permit shall include an interim effluent limitation of no higher than 0.5 mg/L expressed as a six-month average. An effluent limit not to exceed 1.0 mg/L of total phosphorus expressed as a monthly average shall also be included in the permit. The subsequent permit shall also include an updated adaptive management plan to achieve the phosphorus water quality criterion in s. NR 102.06. The department may allow the permittee a compliance schedule that may not exceed five years if necessary to meet this interim limitation. NR 217.18(3)(e)4.4. If by the expiration of the second permit issued under the adaptive management option, monitoring data collected for the receiving water indicate that the applicable phosphorus criterion under s. NR 102.06 has not been met, the department shall require compliance with a water quality based effluent limitation for phosphorus calculated under s. NR 217.13 or a US EPA approved TMDL. The department may allow the permittee a compliance schedule that may not exceed five years if necessary to meet this limitation. NR 217.18(3)(f)(f) A statement that failure to implement any of the terms or conditions established under pars. (a) through (e) above, is a violation of the permit. NR 217.18(3)(g)(g) Provisions that the department may terminate the adaptive management option for a permittee and require compliance with a phosphorus effluent limitation calculated under s. NR 217.13 or a US EPA approved TMDL based on any of the following reasons: NR 217.18(3)(g)1.1. Failure to implement the adaptive management actions in accordance with the approved adaptive management plan and compliance schedule established in the permit. NR 217.18(3)(g)2.2. New information becomes available that changes the department’s determinations made under sub. (2). NR 217.18(3)(g)3.3. Circumstances beyond the permittee’s control have made compliance with the applicable phosphorus criterion in s. NR 102.06 pursuant to the plan’s goals and measures infeasible. NR 217.18(3)(g)4.4. A determination by the department that sufficient reductions have not been achieved to timely reduce the amount total phosphorus to meet the criteria in s. NR 102.06. NR 217.18 HistoryHistory: CR 10-035: cr. Register November 2010 No. 659, eff. 12-1-10. NR 217.19NR 217.19 Variances for stabilization ponds and lagoon systems. NR 217.19(1)(a)(a) An owner or operator of a permitted wastewater treatment system that consists primarily of a stabilization pond system or a lagoon system may apply for a variance to the phosphorus water quality based effluent limitations pursuant to s. 283.15 (4) (a) 1. f., Stats., using the procedures in this section. NR 217.19 NoteNote: Stabilization ponds and lagoons are operated primarily by communities serving a population of 2000 or less and small industries. With currently available technology that could be used in conjunction with stabilization ponds or lagoons, it is unlikely that phosphorus water quality based effluent limits less than 1 mg/L can be consistently met. To meet phosphorus water quality based effluent limits of less than 1 mg/L, it will be necessary for owners of the systems to construct new wastewater treatment plants which could result in substantial and widespread adverse social and economic impacts.
NR 217.19(1)(b)(b) A new discharger may not receive approval for a variance under this section or pursuant to any other variance procedure. NR 217.19(2)(a)(a) The application for a variance under this section shall be submitted with the WPDES permit application for reissuance, or within 30 days after the permittee receives written notification of the proposed phosphorus limits, if the notification occurs later. The application shall be submitted on the phosphorus lagoon and stabilization pond variance form made available from the department or on a form containing equivalent information. NR 217.19 NoteNote: Owners or operators of stabilization ponds or lagoon systems may obtain the variance application form from the offices of the department of natural resources, bureau of watershed management at 101 South Webster Street, P.O. Box 7921, Madison, Wisconsin 53707. The form will provide guidance on the type of information needed to demonstrate widespread social and economic impacts.
NR 217.19(2)(b)(b) The application shall, at a minimum, include the following information: NR 217.19(2)(b)3.3. Information on the number and volume of lagoon or pond treatment cells, treatment processes, discharge periods, retention times, population served, influent flow, and available capacity for holding wastewater. NR 217.19(2)(b)4.4. Other information requested by the department that is relevant to the review conducted under sub. (3). NR 217.19 NoteNote: It is recommended that the permittee ask for calculation of potential phosphorus water quality based limits at least 12 months prior to permit expiration. This information will help the permittee complete their variance request portion of the permit application which is due 180 days prior to permit expiration.
NR 217.19(3)(a)(a) The department shall review the submitted application for the variance and determine whether the permittee can achieve the phosphorus effluent limitations calculated pursuant to s. NR 217.13 without widespread adverse social and economic impacts. In making this determination, the department shall: NR 217.19(3)(a)1.1. Compare the calculated phosphorus effluent limitations to the phosphorus effluent data submitted under sub. (2). If the permittee does not have sufficient phosphorus discharge data for its system, the department may augment the data set with effluent data from a similar lagoon or pond system in the state to make the comparison. The department may apply statistical methodologies to make its determination on the ability of the current lagoon or stabilization pond system to meet phosphorus limitations. NR 217.19 NoteNote: The department may use a US EPA publication titled, Interim Economic Guidance for Water Quality Standards — Workbook, EPA-823-B-95-002, March 1995, which provides information on evaluating economic and social impacts.
NR 217.19(3)(b)(b) The department’s decision to approve or deny a variance under this section shall be made on or before the date of the s. 283.53 (3) (d), Stats., public notice for the proposed permit reissuance and shall be made in accordance with the following: NR 217.19(3)(b)1.1. If the department determines that the permittee cannot meet the phosphorus water quality based effluent limitation without widespread adverse social and economic impacts, the department shall approve the variance. If the variance is approved, the department shall specify in the permit that the variance has been granted for phosphorus, and the requirements in sub. (4) shall also be included in the permit. NR 217.19(3)(b)2.2. If the department determines that the permittee can meet the phosphorus effluent limitations without widespread adverse social and economic impacts or that effluent limitations are not necessary as determined by s. NR 217.15, the department shall deny the variance and notify the applicant of this determination in writing. NR 217.19(3)(c)(c) If the department denies a variance under this section, a permittee may not apply again after the permit is issued for a variance from the phosphorus water quality standard based on the factor in s. 283.15 (4) (a) 1. f., Stats., for the same permit term. NR 217.19 NoteNote: All variances are subject to US EPA review and approval.
NR 217.19(4)(4) Permit terms if variance is approved. If the department approves a variance to the phosphorus effluent limitations under this section, the following requirements shall be included in the reissued permit: NR 217.19(4)(a)(a) The permit shall include a phosphorus variance effluent limitation as follows: NR 217.19(4)(a)1.1. The numeric limitation shall equal the upper 99th percentile of representative daily discharge concentrations (one-day P99) as calculated in s. NR 106.05 (5) (a). NR 217.19(4)(a)2.2. The variance limitation shall be expressed as a daily maximum concentration. NR 217.19(4)(b)(b) The permittee shall conduct monitoring of phosphorus during discharge periods at a frequency specified in the permit. NR 217.19(4)(c)(c) The permittee shall, to the extent practicable, identify and minimize the non-domestic sources of phosphorus to the system and operate the treatment system to minimize exceedances of the calculated limits. NR 217.19(4)(d)(d) The permittee shall investigate treatment technologies, process changes, pollutant source reduction steps, wastewater reuse or other techniques that may result in compliance by the permittee with the applicable phosphorus water quality standard, and shall submit reports on those investigations as required by the department. NR 217.19(5)(5) Continued variances. If a permittee received approval for a variance to the phosphorus standard under this section in a reissued permit, the permittee may request a continued variance from the phosphorus standard in a subsequent reissued permit pursuant to the procedures and requirements in this section. NR 217.19 HistoryHistory: CR 10-035: cr. Register November 2010 No. 659, eff. 12-1-10; correction in (3) (a) 2. made under s. 13.92 (4) (b) 7., Stats., Register January 2011 No. 661.
