CC WORKSESSION PACKET 01302018 - Laserfiche WebLink

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www.pca.state.mn.us • 651-296-6300 • 800-657-3864 • TTY 651-282-5332 or 800-657-3864 • Available in alternative formats wq-strm4-49e • 6/7/13 Page 2 of 3 2) Is your treatment system contained within the conveyances and structural stormwater Best Management Practices (BMPs) of a small MS4 (the utilized conveyances and structural stormwater BMPs shall not include any receiving waters)? *If no, contact MPCA MS4 Permit Program staff for appropriate next steps. Yes No 3) Does your treatment system utilize chemicals other than alum or ferric chloride? *If yes, you must receive written approval from the MPCA. Contact MPCA MS4 Permit Program staff for appropriate next steps. Yes No 4) Does your treatment system include in-lake phosphorus treatment activities? *If yes, in-lake phosphorus treatment is not authorized under this permit. Contact MPCA MS4 Permit Program staff for appropriate next steps. Yes No b. Treatment system design 1) Is your treatment system constructed in a manner that diverts the stormwater flow away from the main conveyance system for treatment? Yes No 2) Is a High Flow Bypass part of the inlet design for your treatment system? Yes No 3) Does your treatment system include a flocculent storage/settling area incorporated into the design, and adequate maintenance access provided (minimum of eight-feet wide) for the removal of accumulated sediment? If you answered no to any of the above permit requirements in 4.b.1) – 3) (Treatment System Design), describe the tasks and corresponding schedules that will be taken to assure that, within 12 months of the date permit coverage is extended, these permit requirements are met. Yes No Answer yes or no below to indicate if your alum or ferric chloride phosphorus treatment system meets the following requirements in the Permit: c. Monitoring 1) During operation, does your treatment system have a designated responsible person performing 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 2) Following visual monitoring which occurs within 24 hours after a rainfall event, do you conduct the next visual monitoring of your system seven (7) days after that rainfall event? Yes No 3) Does your treatment system utilize three benchmark monitoring stations? Table B-1(Monitoring Parameters During Operation) in the Permit shall be used for the parameters, units of measure, and frequency of measurement for each station. Yes No 4) Do you collect grab samples or flow-weighted 24-hour composite samples at your treatment system? Yes No 5) Are your treatment system samples, excluding pH samples, analyzed by a certified laboratory by the Minnesota Department of Health and or the MPCA? Yes No (a) Do your sample preservation and test procedures for the analysis of pollutants conform to 40 CFR Part 136 and Minn. R. 7041.3200? Yes No (b) Are your detection limits for dissolved phosphorus, dissolved aluminum, and dissolved iron at a minimum of 6 micrograms per liter (µg/L), 10 µg/L, and 20 µg/L, respectively? Yes No (c) Do you measure pH within 15 minutes of sample collection using properly calibrated and maintained equipment? Yes No 6) In the following situations, will you perform corrective actions and immediately notify the Minnesota Department of Public Safety Duty Officer, if: (a) The pH of the discharged water is not within the range of 6.0 and 9.0? Yes No (b) There are any indications of toxicity or measurements exceeding water quality standards? Yes No (c) There is a spill, as defined in Minn. Stat. § 115.01, subd. 13, of alum or ferric chloride. Yes No