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Exhibit MIEC 98A - MIEC Submittal of Revised Appendix B to Prehearing Conference ReportExhibit MIEC 98A 2019 Wastewater Rate Proceeding CERTIFICATE OF SERVICE The undersigned certifies that a copy of the foregoing was sent by electronic transmission to the following on this 22nd day of July, 2019. Ms. Janice Fenton Office Associate Senior Metropolitan St. Louis Sewer District 2350 Market Street St. Louis, MO 63103 jfenton@stlmsd.com Ms. Susan Myers General Counsel Metropolitan St. Louis Sewer District 2350 Market Street St. Louis, MO 63103 smyers@stlmsd.com Ms. Lisa O. Stump Lashly & Baer, P.C. 714 Locust Street St. Louis, MO 63101 lostump@lashlybaer.com Mr. Brian J. Malone Lashly & Baer, P.C. 714 Locust Street St. Louis, MO 63101 bmalone@lashlybaer.com 2 Appendix B (Revised) to MIEC's Prehearing Conference Report 2019 Metropolitan Sewer District Wastewater Rate Case Proceeding Table 5-1 Typical Wastewater Bills per MIEC Historical Information Approved Projected FY 2017 Wastewater Bills Single Family Residential (Metered) FY 2018 FY 2019 FY 2020 FY 2021 FY 2022 FY 2023 FY 2024 1. 1 ccf per month $ 23.05 $ 25.49 $ 28.23 $ 31.22 $ 31.25 $ 32.35 $ 33.57 $ 34.91 2. 5 ccf per month $ 37.41 $ 41.37 $ 45.83 $ 50.70 $ 50.21 $ 51.67 $ 53.61 $ 55.99 3. 6 ccf per month $ 41.00 $ 45.34 $ 50.23 $ 55.57 $ 54.95 $ 56.50 $ 58.62 $ 61.26 4. 10 ccf per month $ 55.36 $ 61.22 $ 67.83 $ 75.05 $ 73.91 $ 75.82 $ 78.66 $ 82.34 5. 15 ccf per month $ 73.31 $ 81.07 $ 89.83 $ 99.40 $ 97.61 $ 99.97 $ 103.71 $ 108.69 6. 20 ccf per month $ 91.26 $ 100.92 $ 111.83 $ 123.75 $ 121.31 $ 124.12 $ 128.76 $ 135.04 Multi -Family Residential (Metered) 7. 20 ccf per month $ 91.26 $ 100.92 $ 111.83 $ 123.75 $ 121.31 $ 124.12 $ 128.76 $ 135.04 8. 40 ccf per month $ 163.06 $ 180.32 $ 199.83 $ 221.15 $ 216.11 $ 220.72 $ 228.96 $ 240.44 9. 60 ccf per month $ 234.86 $ 259.72 $ 287.83 $ 318.55 $ 310.91 $ 317.32 $ 329.16 $ 345.84 Annual Increase FY 2021 FY 2022 FY 2023 FY 2024 0.1% 3.5% 3.8% 4.0% -1.0% 2.9% 3.8% 4.4% -1.1% 2.8% 3.8% 4.5% -1.5% 2.6% 3.7% 4.7% -1.8% 2.4% 3.7% 4.8% -2.0% 2.3% 3.7% 4.9% -2.0% 2.3% 3.7% 4.9% -2.3% 2.1 % 3.7% 5.0% -2.4% 2.1% 3.7% 5.1% Non -Residential (Normal Strength Wastewater) 10. 70 ccf per month $ 273.62 $ 302.37 $ 334.88 $ 370.39 $ 362.75 $ 370.17 $ 383.97 $ 403.39 -2.1% 2.0% 3.7% 5.1% 11. 100 ccf per month $ 381.32 $ 421.47 $ 466.88 $ 516.49 $ 504.95 $ 515.07 $ 534.27 $ 561.49 -2.2% 2.0% 3.7% 5.1% 12. 160 ccf per month $ 596.72 $ 659.67 $ 730.88 $ 808.69 $ 789.35 $ 804.87 $ 834.87 $ 877.69 -2.4% 2.0% 3.7% 5.1% Non -Residential (Excess Strength Wastewater) 13. 70 ccf per month $ 465.30 $ 499.64 $ 538.43 $ 579.43 $ 564.95 $ 577.85 $ 600.16 $ 628.82 14. 100 ccf per month $ 595.90 $ 642.26 $ 694.64 $ 750.34 $ 731.63 $ 748.04 $ 777.10 $ 815.35 15. 160 ccf per month $ 834.20 $ 903.98 $ 982.86 $ 1,067.35 $ 1,040.51 $ 1,063.12 $ 1,104.33 $ 1,159.98 -2.5% 2.3% 3.9% 4.8% -2.5% 2.2% 3.9% 4.9% -2.5% 2.2% 3.9% 5.0% Table 5-1 Typical Wastewater Bills As Filed Historical Information Approved Projected FY 2017 Wastewater Bills Single Family Residential (Metered) FY 2018 FY 2019 FY 2020 FY 2021 Fti' 2022 FY 2023 FY 2024 Annual Increase FY 2021 FY 2022 FY 2023 FY 2024 1. 1 ccf per month $ 23.05 $ 25.49 $ 28.23 $ 31.22 $ 31.53 $ 32.73 $ 33.97 $ 35.26 1.0% 3.8% 3.8% 3.8% 2. 5 ccf per month $ 37.41 $ 41.37 $ 45.83 $ 50.70 $ 51.61 $ 53.57 $ 55.61 $ 57.74 1.8% 3.8% 3.8% 3.8% 3. 6 ccf per month $ 41.00 $ 45.34 $ 50.23 $ 55.57 $ 56.63 $ 58.78 $ 61.02 $ 63.36 1.9% 3.8% 3.8% 3.8% 4. 10 ccf per month $ 55.36 $ 61.22 $ 67.83 $ 75.05 $ 76.71 $ 79.62 $ 82.66 $ 85.84 2.2% 3.8% 3.8% 3.8% 5. 15 ccf per month $ 73.31 $ 81.07 $ 89.83 $ 99.40 $ 101.81 $ 105.67 $ 109.71 $ 113.94 2.4% 3.8% 3.8% 3.9% 6. 20 ccf per month $ 91.26 $ 100.92 $ 111.83 $ 123.75 $ 126.91 $ 131.72 $ 136.76 $ 142.04 2.6% 3.8% 3.8% 3.9% Multi -Family Residential (Metered) 7. 20 ccf per month $ 91.26 $ 100.92 $ 111.83 $ 123.75 $ 126.91 $ 131.72 $ 136.76 $ 142.04 2.6% 3.8% 3.8% 3.9% 8. 40 ccf per month $ 163.06 $ 180.32 $ 199.83 $ 221.15 $ 227.31 $ 235.92 $ 244.96 $ 254.44 2.8% 3.8% 3.8°/ 3.9% 9. 60 ccf per month $ 234.86 $ 259.72 $ 287.83 $ 318.55 $ 327.71 $ 340.12 $ 353.16 $ 366.84 2.9% 3.8% 3.8% 3.9% Non -Residential (Normal Strenuth Wastewater) 10. 70 ccf per month $ 273.62 $ 302.37 $ 334.88 $ 370.39 $ 382.35 $ 396.77 $ 411.97 $ 427.89 3.2% 3.8% 3.8% 3.9% 11. 100 ccf per month $ 381.32 $ 421.47 $ 466.88 $ 516.49 $ 532.95 $ 553.07 $ 574.27 $ 596.49 3.2% 3.8% 3.8% 3.9% 12. 160 ccf per month $ 596.72 $ 659.67 $ 730.88 $ 808.69 $ 834.15 $ 865.67 $ 898.87 $ 933.69 3.1 % 3.8% 3 8% 3.9% Non -Residential (Excess Stren th Wastewater) 13. 70 ccf per month $ 465.30 $ 499.64 $ 538.43 $ 579.43 $ 602.01 $ 621.65 $ 644.46 $ 666.95 3.9% 3.3% 3.7°% 3.5% 14. 100 ccf per month $ 595.90 $ 642.26 $ 694.64 $ 750.34 $ 782.91 $ 808.97 $ 838.83 $ 868.53 4.3% 3.3% 3.7% 3.5% 15. 160 ccf per month $ 834.20 $ 903.98 $ 982.86 $ 1,067.35 $ 1,114.41 $ 1,152.60 $ 1,195.50 $ 1,238.71 4.4% 3.4% 3.7% 3.6% Table 5-1 Difference between Typical Wastewater Bills per MIEC and Typical Wastewater Bills As Filed Historical Information Approved Projected FY 2017 Wastewater Bills Single Family' Residential (Metered) FY 2018 FY 2019 FY 2020 FY 2021 FY 2022 FY 2023 FY 2024 1. 1 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 0.28 -$ 0.38 -$ 0.40 -$ 0.35 2. 5 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 1.40 -$ 1.90 -$ 2.00 -$ 1.75 3. 6 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 1.68 -$ 2.28 -$ 2.40 -$ 2.10 4. 10 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 2.80 -$ 3.80 -$ 4.00 -$ 3.50 5. 15 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 4.20 -$ 5.70 -$ 6.00 -$ 5.25 6. 20 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 5.60 -$ 7.60 -$ 8.00 -$ 7.00 Multi -Family Residential (Metered) 7. 20 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 5.60 -$ 7.60 -$ 8.00 -$ 7.00 8. 40 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 11.20 -$ 15.20 -$ 16.00 -$ 14.00 9. 60 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 16.80 -$ 22.80 -$ 24.00 -$ 21.00 Non -Residential (Normal Strength Wastewater) 10. 70 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 19.60 -$ 26.60 -$ 28.00 -$ 24.50 11. 100 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 28.00 -$ 38.00 -$ 40.00 -$ 35.00 12. 160 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 44.80 -$ 60.80 -$ 64.00 -$ 56.00 Non -Residential (Excess Strength Wastewater) 13. 70 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 37.06 -$ 43.80 -$ 44.30 -$ 38.14 14. 100 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 51.28 -$ 60.94 -$ 61.74 -$ 53.18 15. 160 ccf per month $ 0.00 $ 0.00 $ 0.00 $ 0.00 -$ 73.90 -$ 89.47 -$ 91.17 -$ 78.73 Table 5-1 Percent Difference between Typical Wastewater Bills per MIEC and Typical Wastewater Bills As Filed Historical Information Approved Projected FY 2017 Wastewater Bills Single Family Residential (Metered) FY 2018 FY 2019 FY 2020 FY 2021 1. 1 ccf per month 0.0% 0.0% 0.0% 0.0% -0.9% 2. 5 ccf per month 0.0% 0.0% 0.0% 0.0% -2.7% 3. 6 ccf per month 0.0% 0.0% 0.0% 0.0% -3.0% FY 2022 -1.2% -3.5% -3.9% 4. 10 ccf per month 0.0% 0.0% 0.0% 0.0% -3.7% -4.8% 5. 15 ccf per month 0.0% 0.0% 0.0% 0.0% -4.1% -5.4% 6. 20 ccf per month 0.0% 0.0% 0.0% 0.0% -4.4% -5.8% FY 2023 - 1.2% - 3.6% - 3.9% -4.8% -5.5% -5.8% FY 2024 -1.0% -3.0% -3.3% -4.1% -4.6% -49% Multi -Family Residential (Metered) 7. 20 ccf per month 0.0% 0.0% 0.0% 0.0% -4.4% -5.8% -5.8% -4.9% 8. 40 ccf per month 0.0% 0.0% 0.0% 0.0% -4.9% -6.4% -6.5% -5.5% 9. 60 ccf per month 0.0% 0.0% 0.0% 0.0% -5.1 % -6.7% -6.8% -5.7% Non -Residential (Normal Strength Wastewater) 10. 70 ccf per month 0.0% 0.0% 0.0% 0.0% 11. 100 ccf per month 0.0% 0.0% 0.0% 0.0% 12. 160 ccf per month 0.0% 0.0% 0.0% 0.0% -5.1% -5.3% -5.4% -6. 7% -6.9% -7.0% -6.8% -7.0% -7.1% Non -Residential (Excess Strength Wastewater) 13. 70 ccf per month 0.0% 0.0% 0.0% 0.0% -6.2% -7.0% -6.9% 14. 100 ccf per month 0.0% 0.0% 0.0% 0.0% -6.6% -7.5% -7.4% 15. 160 ccf per month 0.0% 0.0% 0.0% 0.0% -6.6% -7.8% -7.6% -5.7% -5.9% -6.0% -5.7% -6.1 -6.4%