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S'IORM\V,�7 L'R SITG PLAN <br />AUGUSTA \VOODS CONDOMINIUMS <br />�1AY 20, 2003 <br />P�1GIi 29 <br />I3AS[N 6 <br />The storm drainage system for this basin consists of a roof dispersion sys�em. Storm <br />water trcatmcnt is not require� for die runoff from this basin. Runoff from the landscaped <br />portion of this basin will also entcr the dispersion system. As some intiltration and <br />dispersion will take place in the landscaped areas a foctor of 50°�o has been applied to <br />thcse areas. Table 3-2.3 Roof Runot�f Dispersion System Sizing, of die City of Everett <br />Stomiwatcr �4anagement Manual has been used ro size the dispersion system using the <br />ibllu�vin� parameters: <br />Roof/Driveway Area = <br />Landscape Area (widi 50% reduction) _ <br />Total Impervious Area = <br />Underlying soil <br />Assumcd trcnch dimensions <br />Requircd trench pc;• ] 00 sf = <br />Rcquired Trench Length = <br />�.�.r.+o��sc�cr��gn���va +voo�s sao ra,o oao�rcowm��r�ssroaun wcDWHlsrm <br />6340 sf <br />1305 sf <br />314� sf <br />Sandy Loam <br />4' wide by 3' deep. <br />0.?3 <br />0.73 * (3145/100) <br />60 feet <br />� <br />