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STORMWATGR Sl7ti PI_AN <br />AUGUSTA \VOODS COND0�41NIUMS <br />MAY 20, 2003 <br />PAGH 28 <br />BASIN 5 <br />The stoim drainage system for this Uasin consists of a roof dispersion system. Storm <br />water treatment is not required for the runoff from this basin. Runoff from the landscaped <br />portion of this basin will also enter the dispersion system. As some infiltration and <br />dispersion will takc place in the landsca�ed amas a factor of 50% has bcen aPplied to <br />[hcse arcas. Table 3-2.3 Roof Runoff Dispersion System Sizing, of thc City of' Gverett <br />Stonnwatcr Managcment Manual has been used to size the dispersion system using dre <br />folluwing parameters: <br />Root%Drivcway Area = <br />Landscape Arca (with 5046 redu^tion) _ <br />Total Impervious Area = <br />Underlying soil <br />Asswned trench dimensions <br />Required trench per l00 sf = <br />R�yuircd Trcnch Lcngth = <br />J 9dornsonCraigUugus�a Wwas S��le Plan OJ-0]rpocoments�55Po7-07�DOCDWH/Sfil <br />5850 .;f <br />1400 sf <br />7250 sf <br />Sandy Lo1m <br />�1' wide by 3' deep. <br />0.73 <br />0.73 * (7250/100) <br />53 fcet <br />L�j <br />