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Coverage issued: October 28, 2021
<br />Permit expires: November 15, 2025
<br />MS400047
<br />Page 6 of 28
<br />12.10
<br />If the applicant is claiming to meet an applicable WLA where a reduction in pollutant loading is required for oxygen
<br />demand, nitrate, TSS, or TP, the applicant must provide documentation to demonstrate the applicable WLA is being met.
<br />At a minimum, the applicant must provide the following information:
<br />a. a list of all structural stormwater BMPs implemented to achieve the applicable WLA, including the
<br />BMP type (e.g., constructed basin, infiltrator, filter, swale or strip, etc.), location in geographic coordinates, owner,
<br />and year implemented; and
<br />b. documentation using an Agency -approved method, which demonstrates the estimated reductions of
<br />oxygen demand (or its surrogate pollutants), nitrate, TSS, or TP from BMPs meet the MS4 WLA reductions included
<br />in the TMDL report, if that information is available (e.g., percent reduction or pounds reduced); or
<br />c. documentation using an Agency -approved method, which demonstrates the applicant's existing load meets the WLA.
<br />[Minn. R. 7090]
<br />12.11
<br />For the requirements of Section 23, alum or ferric chloride phosphorus treatment systems, if applicable, the applicant must
<br />submit the following information:
<br />a. location of the system in geographic coordinates;
<br />b. name(s) of the individual(s) or position titles responsible for the operation of the system;
<br />c. information described in item 23.11, if the system is constructed at the time the applicant submits the application to the
<br />Agency;
<br />d. indicate if the system complies with the requirements in Section 23; and
<br />e. if applicable, for each requirement in Section 23 that the applicant's system does not comply with at the time of
<br />application, the applicant must bring the system into compliance in accordance with the schedule in Appendix B,
<br />Table 2 (existing permittee applicants), or Table 3 (new permittee applicants). [Minn. R. 7090]
<br />13.1
<br />Stormwater Pollution Prevention Program (SWPPP). [Minn. R. 7090]
<br />13.2
<br />The permittee must develop, implement, and enforce a SWPPP designed to reduce the discharge of pollutants from the
<br />small MS4 to the Maximum Extent Practicable (MEP) and to protect water quality. Existing permittees regulated within the
<br />urbanized area as defined by the United States Census Bureau, the applicable urbanized area for which the permittee must
<br />develop, implement, and enforce a SWPPP can be based on the most recent decennial census of 2010 for the duration of
<br />the General Permit. [Minn. R. 7090]
<br />13.3
<br />If the permittee enters into a partnership for purposes of meeting SWPPP requirements, the permittee maintains legal
<br />responsibility for compliance with the General Permit. [Minn. R. 7090]
<br />13.4
<br />Existing permittees must revise their SWPPP developed under the Agency's small MS4 general permit No.MNR040000
<br />that was effective August 1, 2013, to meet the requirements of the General Permit in accordance with the schedule in
<br />Appendix B, Table 2. New permittees must develop, implement, and enforce their SWPPP in accordance with the schedule
<br />in Appendix B, Table 3. The permittee's SWPPP must consist of Sections 14 through 23, as applicable. [Minn. R. 7090]
<br />14.1
<br />Mapping. [Minn. R. 7090]
<br />14.2
<br />New permittees must develop, and existing permittees must update, as necessary, a storm sewer system map that depicts
<br />the following:
<br />a. the permittee's entire MS4 as a goal, but at a minimum, all pipes 12 inches or greater in diameter, including stormwater
<br />flow direction in those pipes;
<br />b. outfalls, including a unique identification (ID) number assigned by the permittee, and an associated geographic
<br />coordinates;
<br />c. structural stormwater BMPs that are part of the permittee's MS4; and
<br />d. all receiving waters. [Minn. R. 7090]
<br />15.1
<br />Minimum Control Measures (MCMs). [Minn. R. 7090.1040]
<br />15.2
<br />The permittee must incorporate the following six MCMs into the SWPPP. [Minn. R. 7090.1040]
<br />16.1
<br />MCM 1: Public Education and Outreach. [Minn. R. 7090]
<br />16.2
<br />New permittees must develop and implement, and existing permittees must revise their current program, as necessary,
<br />and continue to implement, a public education program to distribute educational materials or equivalent outreach that
<br />informs the public of the impact stormwater discharges have on waterbodies and that includes actions citizens, businesses,
<br />
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