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For question 159.13-G, provide information for calendar year 2020. <br />159.B. For each month, provide the number of days the system was operational: <br />159.B.1. <br />January'. <br />159.B.2. <br />February'. <br />159.B.3. <br />March'. <br />159.B4. <br />April'. <br />159. <br />B.5. <br />May <br />159. <br />B.6 <br />June'. <br />159.B.7. <br />July. <br />159.B.8. <br />August. <br />159.B.9. <br />September'. <br />159.B.10. <br />October'. <br />159.B.11. <br />November'. <br />159.B.12. <br />December'. <br />159.C. What chemicals) was used for treatment: <br />159.C.1. 0 Alum <br />159.0 2. ❑ Ferric Chloride <br />159.D. Provide the number of gallons of water treated: <br />159.E. Provide the number of gallons ofalum or ferric chloride treatment used: <br />159.F. Provide the calculated pounds of phosphorous removed: <br />159.G. Describe any performance issue(s) and the corrective action(s), including the date(s) when corrective action(s) were <br />taken: <br />160. Permit item 23.3: Which of the following requirements are you meeting? (Check all that apply) <br />160 A. ❑ Your treatment system is for the treatment of phosphorus in stormwater. Nonstormwaterdischarges must not <br />be treated by this system. <br />160 B. ❑ Your treatment system is contained within the conveyances and structural stormwater BMPs of the MS4. The <br />utilized conveyances and structural stormwater BMPs do not include any receiving waters. <br />160.C. ❑ Phosphorus treatment systems utilizing chemicals other than alum or ferric chloride receive written approval <br />from the MPCA. <br />160 D. ❑ In -lake phosphorus treatment activities are not authorized. <br />161. Permit item 23.3: Which of the following design parameters does your treatment system include? (Check all that apply) <br />161.A. ❑ The treatment system is constructed in a manner that diverts the stormwater Flow to be treated from the main <br />conveyance system. <br />161.B. ❑ A high Flow bypass is part of the inlet design. <br />161.C. ❑ A Flocculent storage/settling area is incorporated into the design, and adequate maintenance access is <br />provided (minimum of eight feet wide) for the removal of accumulated sediment. <br />162. Permititem23.5: Doyou have a designated person perform visual monitoring of the treatmentsystem for proper performance <br />at least once everyseven (7) days, and within 24 hours after a rainfall event greater than 2.5 inches it 24 hours? <br />❑ Yes <br />[]No (Skip to Q164) <br />163. If yes in Q162, please list the In of the individuals) or position title(s): <br />https//www.pca.state.mn.us • <br />651-296-63M • <br />Wm69-3860 • <br />Use your preferred <br />relay service • <br />Available in alternative formats <br />wq-strrw-a9a • 9123120 <br />igve°bVW6f 115 <br />