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5/1822, 1:54 PM MS4 Annual Report for 2021 MCM 5: Post -Construction Stormwater Management The following questions refer to Part III.D.5. of the Permit. Q56 Do you have a regulatory mechanism which meets all requirements as specified in Part III.D.5.a. of the Permit? Q Yes Q No Q57 What approach are you using to meet the performance standard for Volume, Total Suspended Solids (TSS), and Total Phosphorus (TP) as required by the Permit? [Part III.D.5.a.(2)] Check all that apply. Refer to the link http://wwwpca.state.mn.us/index.php/view-document.html?gid=17815 for guidance on stormwater management approaches. ❑ Retain a runoff volume equal to one inch times the area of the proposed increase of impervious surfaces on -site ❑ Retain the post -construction runoff volume on site for the 95th percentile storm ea Match the pre -development runoff conditions ❑ Adopt the Minimal Impact Design Standards (MIDS) ❑ An approach has not been selected ❑ Other method (Must be technically defensible--e.g. based on modeling, research and acceptable engineering practices) Q58 Do you have written Enforcement Response Procedures (ERPs) to compel compliance with your post -construction stormwater management regulatory mechanism(s)? [Part III.B.] * Yes O No Q59 Between January 1, 2021 and December 31, 2021, did you modify your BMPs, measurable goals, or future plans for your post -construction stormwater management program? [Part V.B] O Yes * No MCM 6: Pollution Prevention/Good Housekeeping for Municipal Operations The following questions refer to Part III.D.6. of the Permit. Q60 Enter the total number of structural stormwater BMPs, outfalls (excluding underground outfalls), and ponds within your MS4 (exclude privately owned). Structural stormwater 224 BMPs Outfalls 1e6 Ponds 204 Q61 Enter the number of structural stormwater BMPs, outfalls (excluding underground outfalls), and ponds that were inspected from January 1, 2021 to December 31, 2021 within your MS4 (exclude privately owned). [Part III.D.6.e.] Structural stormwater 224 BMPs Outfalls 1e6 Ponds 60 Q62 Have you developed an alternative inspection frequency for any structural stormwater BMPs, as allowed in Part III.D.6.e.(1) of the Permit? * Yes O No Q63 Based on inspection findings, did you conduct any maintenance on any structural stormwater BMPs? [Part III.D.6.e.(1)] Q Yes O No Q64 Briefly describe the maintenance that was conducted: general maintenance. weeding, trash removal, sump cleaning, erosion fixes, replacement of inlet/outlets structures, etc. https://su wey.mn.gov/siam/su weylanding/printerviewer.asp?sid=37f44a97ae6948Ob9l fO7Oa11 a28c4e5 8/10