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Table B-5 <br />Water Pollution Control Plant Influent Characteristics <br />Measured (1)Calculated (2)Calculated (2)Measured (1)Measured (1) <br />Flow BOD SS BOD SS Days in <br />Fiscal Year 2017-2018 mg K lb K lb mg/l mg/l Month <br />Jul-17 142 519 424 438 358 31 <br />Aug-17 139 521 434 449 374 31 <br />Sep-17 133 570 420 514 379 30 <br />Oct-17 132 563 423 511 384 31 <br />Nov-17 138 584 502 507 436 30 <br />Dec-17 131 524 380 480 348 31 <br />Jan-18 160 627 422 470 316 31 <br />Feb-18 125 490 453 470 435 28 <br />Mar-18 162 551 481 408 356 31 <br />Apr-18 160 528 459 396 344 30 <br />May-18 145 624 481 516 398 31 <br />Jun-18 131 493 440 451 403 30 <br />Total 1,698 6,593 5,319 365 <br />Average Day 4.65 18.06 14.57 466 376 <br />Inflow/Infiltration Calculation Flow, mg Months mg/Month <br />Jan/Mar/Apr average with I/I >482 3 161 <br />Monthly average without I/I >1,216 9 135 Months Total I/I, mg per year <br />monthly average I/I >26 3 76.7 <br />Annual Summary Flow, mg BOD, K lb SS, K lb <br />Water Pollution Control Plant >1,698 6,593 5,319 <br />FY18 Customer (3) >1,527 6,397 4,893 <br />I/I >77 13 38 <br />Difference from WPCP >95 184 389 <br />Difference as a % of WPCP >6%3%7% <br />Notes: <br />1 Measurements of flow, in million gallons; and BOD and SS, in milligrams per liter, were provided by the City. <br />2 Thousand pounds (K lb) was calculated using the formula: million gallons x mg/l x 8.34 [a conversion factor] / 1000. <br />3 Customer data was based on FY18 use. <br />135