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5/17/2018 <br />MS4 Annual Report for 2017 <br />Q55 Between January 1, 2017 and December 31, 2017, did you modify your BMPs, <br />measurable goals, or future plans for your construction site stormwater runoff control <br />program? [Part IVB.] <br />0 Yes <br />O No <br />MCM 5: Post -Construction Stormwater Management <br />The following questions refer to Part III.D.5. of the Permit. <br />Q56 Do you have a regulatory mechanism which meets all requirements as specified in Part <br />III.D.5.a. of the Permit? <br />O Yes <br />0 No <br />Q57 What approach are you using to meet the performance standard for Volume, Total <br />Suspended Solids (TSS), and Total Phosphorus (TP) as required by the Permit? [Part <br />III.D.5.a.(2)] <br />Check all that apply. <br />Refer to the link http://www.pca.state.mn.us/index.php/view-document.html?gid=17815 <br />for guidance on stormwater management approaches. <br />© Retain a runoff volume equal to one inch times the area of the proposed increase of impervious <br />surfaces on-site <br />O Retain the post -construction runoff volume on site for the 95th percentile storm <br />0 Match the pre -development runoff conditions <br />O Adopt the Minimal Impact Design Standards (MIDS) <br />O An approach has not been selected <br />O Other method (Must be technically defensible--e.g. based on modeling, research and acceptable <br />engineering practices) <br />Q58 Do you have written Enforcement Response Procedures (ERPs) to compel compliance <br />with your post -construction stormwater management regulatory mechanism(s)? [Part <br />111.6.] <br />p. Yes <br />0 No <br />Q59 Between January 1, 2017 and December 31, 2017, did you modify your BMPs, <br />measurable goals, or future plans for your post -construction stormwater management <br />program? [Part IVB.] <br />p. Yes <br />0 No <br />Describe those modifications: <br />Modified our Stormwater Management Standards. Increased our volume requirement <br />from 1" to 1.1" over the new/reconstructed impervious surface. Also added a <br />requirement that a min of 850 of new/reconstructed impervious must be treated. <br />https://survey.mn.gov/siam/suweylanding/printerviewer.asp?sid=746D70617A2D766568313532363538333335332E3336 13/18 <br />