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Resolution No. 4875
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2006 No. 4856-4897
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Resolution No. 4875
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Last modified
6/10/2010 4:50:03 PM
Creation date
6/14/2006 4:39:45 PM
Metadata
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Template:
City Recorder
CMO_Document_Type
Resolutions
Document_Date
6/12/2006
Document_Number
4875
CMO_Effective_Date
6/12/2006
Repeal_Date
5/7/2007
Author
Mary H. Feldman
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<br />The projected 2025 average load is determined as follows: <br /> <br />Projected 2025 BOD = (0.185 x 297,585 x 1.3) + 2,402 = 74,000 mgd (actual calculated value of <br />73,9711bsf day rounded to the nearest hundred pounds) <br /> <br />Where: <br /> <br />0.185 is the selected pounds per capita per day (Ppcd) based on dry season <br />values from 1990 to 2002 ' <br /> <br />297,585 is the p~ojected population to be served in 2025, <br /> <br />1.3 is the selected peaking to convert average dry season load to DSMM load <br />(based on 1990 to 2002 data)' <br /> <br />2,402 is the projected industrial flow in lbsf day (it has been assumed that the <br />industrial load will remain constant over the study period) <br /> <br />The required capacity to meet the needs of growth in terms of BOD is 19,200 lbsf day <br />(74,000 - 54,800). <br /> <br />TSS <br /> <br />The methodology for TSS is identical to that of BOD. The existing capacity, although not <br />explicitly stated in the current NPDES permit, is 71,600 lbsf day, which was the value used <br />for the original WPCF design. The current loading or current required, presented in DSMM <br />terms, is 64,700lbsf day and is determined as follows: <br /> <br />Current TSS = (0.205 x 217,737 x 1.4) + 2,224 = 64,700 Ibsf day (actual calculated value of <br />64,715 lbs f day rounded to the nearest hundred pounds) , <br /> <br />Where: <br /> <br />0.205 is the selected pounds per capita per day (ppcd) based on dry season <br />values from 1990 to 2002 <br /> <br />217,737is the population served in 2002 <br /> <br />1.4 is the selected peaking to convert average dry season flow to maximum <br />month dry season flow (based on 1990 to 2002 data) <br /> <br />2,224 is the current industrial TSS load in lbsf day <br /> <br />The available capacity in terms of TSS is 6,900 lbsf day (71,600 - 64,700). <br /> <br />The projected 2025 average TSS is determined as follows: <br /> <br />Projected 2025 TSS = (0.205 * 297,585 * 1.4) + 2,224 = 87,600 mgd (actual calculated value of <br />87,6311bsf day) rounded to the nearest hundred pounds) <br /> <br />Where: <br /> <br />0.205 is the selected pounds per capita per day (Ppcd) based on dry season <br />values' from 1990 to 2002 <br /> <br />297,585 is the projected population to be served in 2025 <br /> <br />A-30 <br />
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