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• 651-296-6300 • 800-657-3864 • Use your preferred relay service • Available in alternative formats https://www.pca.state.mn.us <br />wq-strm4-49a • 9/23/20 Page 30 of 32 <br />For question 159.B-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.January: <br />159.B.2.February: <br />159.B.3.March: <br />159.B.4.April: <br />159.B.5.May: <br />159.B.6.June: <br />159.B.7.July: <br />159.B.8.August: <br />159.B.9.September: <br />159.B.10.October: <br />159.B.11.November: <br />159.B.12. December: <br />159.C. What chemical(s) was used for treatment: <br />159.C.1. Alum <br />159.C.2. Ferric Chloride <br />159.D. Provide the number of gallons of water treated: <br />159.E. Provide the number of gallons of alum 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. Non-stormwater discharges 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 /> 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 /> 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.Permit item 23.5: Do you have a designated person perform visual monitoring of the treatment system for proper performance <br />at least once every seven (7) days, and within 24 hours after a rainfall event greater than 2.5 inches in 24 hours? <br /> Yes <br /> No (Skip to Q164) <br />163.If yes in Q162, please list the name(s) of the individual(s) or position title(s): <br />160.D. <br />161.A.