Resolution No. 4900 - Laserfiche WebLink

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0.185 is the selected pounds per capita per day (ppcd) based on dry season values from 1990 to 2002 217,737 is the population served in 2002 1.3 is the selected peaking to convert average dry season load to DSMM load (based on 1990 to 2002 data) 2,402 is the current industrial BOD load in lbs/ day The available capacity in terms of BOD is 11,200 lbsl day (66,000 - 54,800). The projected 2025 average load is determined .as follows: Projected 2025 BOD = (0.185 x 297,585 x 1.3) + 2,402 = 74,000 mgd (actual calculated value of 73,971lbsl day rounded to the nearest hundred pounds) Where: 0.185 is the sel~cted pounds per capita per day (ppcd) based on dry season values from 1990 to 2002 297,585 is the projected population to be served in 2025 1.3 is the selected peaking to convert average dry season load to DSMM load (based on 1990 to 2002 data) 2,402 is the projected industrial flow in lbs/ day (it has been assumed that the industrial load will remain constant over the study period) The required capacity to meet the needs of growth in terms of BOD is 19,200 Ibsl day (74,000 - 54,800). TSS The methodology for TSS is identical to that of BOD. The existinKcapacity, although not explicitly stated in the current NPDES permit, is 71,600 lbsl day, which was the value used for the original WPCF design. The current loading or current required, presented in DSMM terms, is 64,700 lbs/ day and is determined as follows: Current TSS = (0.205 x 217,737 x 1.4) + 2,224 = 64,700 lbsl day (actual calculated value of 64,7151bsl day rounded to the nearest hundred pounds) Where: 0.205 is the selected pounds per capita per day (ppcd) based on dry season values from 1990 to 2002 217,737 is the population served in 2002 1.4 is the selected peaking to convert average dry season flow to maximum month dry season flow (based on 1990 to 2002 data) 2,224 is the current industrial TSS load in lbs/ day The available capacity in terms of TSS is 6,900 lbs/ day (71,600 - 64,700). A-30