04-10-2023 Council Packet - Laserfiche WebLink

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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 wq-strm4-49a • 9/23/20 Page 31 of 32 164.Permit item 23.5: 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 165.Permit item 23.6: Does your treatment system utilize three (3) benchmark monitoring stations? Table 1 in Appendix A in the permit must be used for the parameters, units of measure, and frequency of measurement for each station. Yes 166.Permit item 23.7: Do you collect grab samples or flow-weighted 24-hour composite samples at your treatment system? Yes No 167.Permit item 23.8: Are your treatment system samples, excluding potential of hydrogen (pH) samples, analyzed by a laboratory certified by the Minnesota Department of Health and/or the MPCA? Yes 168.Which of the following do your sample tests include? (Check all that apply) 168.A. Sample preservation and test procedures for the analysis of pollutants that conform to 40 CFR Part 136 and Minn. R. 7041.3200. 168.B. Detection limits for dissolved phosphorus, dissolved aluminum, and dissolved iron that are a minimum of 6 micrograms per liter (µg/L), 10 µg/L, and 20 µg/L, respectively. pH that is measured within 15 minutes of sample collection using calibrated and maintained equipment. 169.Permit item 23.9: In the following situation(s) do you perform corrective action(s) and immediately notify the Minnesota Department of Public Safety Duty Officer? (Check all that apply) The pH of the discharged water is not within the range of 6.0 and 9.0. 169.B. Indications of toxicity or measurements exceeding water quality standards which could endanger human health, public drinking water supplies, or the environment. 169.C. A spill or discharge or alteration resulting in water pollution, as defined in Minn. Stat. § 115.01, subd. 13, of alum or ferric chloride. 170.Permit item 23.13: Do you conduct site-specific jar testing using typical and representative water samples in accordance with the most current approved version of ASTM D2035? (Note: All or some of this item is a new permit requirement. Compliance with new requirements is required within 12 months after receiving permit coverage.) Yes No 171.Permit item 23.14: Do you have baseline concentrations of the following parameters in the influent and receiving waters at your treatment system location? (Check all that apply) 171.A. Aluminum or iron Phosphorus 172.Permit item 23.15: Do you have the following system parameters and how each was determined at your treatment system location? (Check all that apply) Flocculant settling velocity 172.B. Minimum required retention time 172.C. Rate of diversion of stormwater into the system 172.D. The flow rate from the discharge of the outlet structure Range of expected dosing rates 173.Permit item 23.16: Have you developed the following site-specific procedures? (Check all that apply) Procedures for the installation, operation and maintenance of all pumps, generators, control systems, and other equipment. 173.B. Specific parameters for determining when the solids must be removed from the system and how the solids will be handled and disposed of. 173.C. Procedures for cleaning up and/or containing a spill of each chemical stored on site. Complete last page and submit using Adobe Acrobat Reader. (If you do not have Acrobat Reader, you can download a free version at https://get.adobe.com/reader/.) No No 168.C 169.A. 171.B. 172.A. 172.E. 173.A.