2022_0524_PWETCPacket - Laserfiche WebLink

Home

For question 159.B-G, provide information for calendar year 2020. 159.B. For each month, provide the number of days the system was operational: 159.B.1. January: 159.B.2. February: 159.B.3. March: 159.B.4. April: 159.B.5. May: 159.B.6. June: 159.B.7. July: 159.B.8. August: 159.B.9. September: 159. B.10. October: 159.B.11. November: 159.B.12. December: 159.C. What chemical(s) was used for treatment: 159.C.1. ❑ Alum 159.C.2. ❑ Ferric Chloride 159.D. Provide the number of gallons of water treated: 159.E. Provide the number of gallons of alum orferric chloride treatment used: 159.F. Provide the calculated pounds of phosphorous removed: 159.G. Describe any performance issue(s) and the corrective action(s), including the date(s) when corrective action(s) were taken: 160. Permit item 23.3: Which of the following requirements are you meeting? (Check all that apply) 160.A. ❑ Your treatment system is for the treatment of phosphorus in stormwater. Non-stormwater discharges must not be treated by this system. 160.B. ❑ Your treatment system is contained within the conveyances and structural stormwater BMPs of the MS4. The utilized conveyances and structural stormwater BMPs do not include any receiving waters. 160.C. ❑ Phosphorus treatment systems utilizing chemicals other than alum or ferric chloride receive written approval from the MPCA. 160.D. ❑ In -lake phosphorus treatment activities are not authorized. 161. Permit item 23.3: Which of the following design parameters does your treatment system include? (Check all that apply) 161.A. ❑ The treatment system is constructed in a manner that diverts the stormwater flow to be treated from the main conveyance system. 161.B. ❑ A high flow bypass is part of the inlet design. 161.C. ❑ A flocculent storage/settling area is incorporated into the design, and adequate maintenance access is provided (minimum of eight feet wide) for the removal of accumulated sediment. 162. Permit item 23.5: Do you have a designated person perform visual monitoring of the treatment system for proper performance at least once every seven (7) days, and within 24 hours after a rainfall event greater than 2.5 inches in 24 hours? ❑ Yes ❑ No (Skip to Q164) 163. If yes in Q162, please list the name(s) of the individual(s) or position title(s): https://www.pca.state.mn.us 651-296-6300 800-657-3864 Use your preferred relay service Available in alternative formats wq-strm4-49a • 9123120 Page 30 of 32