2020 MS4 General Permit Appendix B: Schedules

Appendix B. Schedules

Table 2:
Existing Permittees - Schedule of permit requirements

Permit requirement	Schedule
Section 12. Stormwater Pollution Prevention Program (SWPPP) Document. Submit the SWPPP Document completed in accordance with Section 12	Within 150 days after General Permit issuance date.
Section 13. Stormwater Pollution Prevention Program (SWPPP) Complete revisions to incorporate the new requirements of Sections 14 - 23 into current SWPPP.	Within 12 months of the date General Permit coverage is extended, unless other timelines have been specifically established in the General Permit and identified below.
Section 19. Construction Site Stormwater Runoff Control Complete revisions to Construction Site Stormwater Runoff Control program, including revisions to regulatory mechanism(s), if necessary. When the CSW Permit is reissued, revise regulatory mechanism(s), if necessary, to be at least as stringent as the requirements for erosion, sediment, and waste controls described in the CSW Permit.	Within 12 months of the date General Permit coverage is extended. Within 12 months of the issuance date of the CSW Permit (expected issuance date of the CSW Permit is August 1, 2023).
Section 21. Pollution Prevention/Good Housekeeping for Municipal Operations Conduct structural stormwater best management practice (BMP) inspections. Conduct pond and outfall inspections	Each calendar year. Prior to the expiration date of the General Permit.
Section 22. Discharges to Impaired Waters with a USEPA- Approved TMDL that includes an Applicable WLA Submit all information required in item 22.2. Meet requirements for applicable WLAs for bacteria, chloride, and temperature in Section 22.	With each annual report. Within 12 months of the date General Permit coverage is extended.
Section 25. Annual Assessment, Annual Reporting, and Recordkeeping Conduct assessment of the SWPPP. On a form provided by the Agency, submit an annual report.	Prior to completion of each annual report. By June 30th of each calendar year.

Table 3:
New Permittees - Schedule of permit requirements

Permit requirement	Schedule
Section 10. New Permittee Applicants Submit Part 1, and Part 2 of the permit application as required by Section 12.	Within 18 months of written notification from the Commissioner that the MS4 meets the criteria in Minn. R. 7090.1010, subp. 1.A. or B. and General Permit coverage is required.
Section 13. Stormwater Pollution Prevention Program (SWPPP) Complete all requirements of Sections 14 - 23.	Within 36 months of the date General Permit coverage is extended, unless other timelines have been specifically established in the General Permit and identified below; or Within timelines established by the Commissioner in item 8.3
Section 14. Mapping Develop a storm sewer system map.	Within 24 months of the date General Permit coverage is extended.
Section 18. Illicit Discharge Detection and Elimination Develop, implement, and enforce an Illicit Discharge Detection and Elimination Program.	Within 12 months of the date General Permit coverage is extended.
Section 19. Construction Site Stormwater Runoff Control Develop, implement, and enforce a Construction Site Stormwater Runoff Control Program. When the CSW Permit is reissued, revise regulatory mechanism(s), if necessary, to be at least as stringent as the requirements for erosion, sediment, and waste controls described in the CSW Permit.	Within 12 months of the date General Permit coverage is extended. Within 12 months of the issuance date of the CSW Permit (expected issuance date of the CSW Permit is August 1, 2023).
Section 20. Post-Construction Stormwater Management Develop, implement, and enforce a Post-Construction Stormwater Management program.	Within 24 months of the date General Permit coverage is extended.
Section 21. Pollution Prevention/Good Housekeeping for Municipal Operations Conduct structural stormwater BMP inspections. Conduct pond and outfall inspections.	Each calendar year Prior to the expiration date of the General Permit.
Section 22. Discharges to Impaired Waters with a USEPA- Approved TMDL that includes an Applicable WLA Submit all information required in item 22.2. Meet requirements for applicable WLAs for bacteria, chloride, and temperature in Section 22.	With each annual report. Within 12 months of the date General Permit coverage is extended.
Section 23. Alum or Ferric Chloride Phosphorus Treatment Systems (if applicable) Meet requirements for treatment systems in Section 23	Within 12 months of the date General Permit coverage is extended.
Section 25. Annual Assessment, Annual Reporting, and Recordkeeping Conduct assessment of the SWPPP. On a form provided by the Agency, submit an annual report.	Prior to completion of each annual report. By June 30th of each calendar year.