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S"I'ORb1\VATER SITF PLAN <br />AUGUSTA WOODSCONUOhllNIUMS <br />MAl' 20, 2003 <br />PAGE 26 <br />I3ASIN 3 <br />The stonn drainage system uscd in Basin 3 consists of collection and conveyance <br />of runoff to a pro-treatment sedimentation vaulL The release from diis vault and <br />higher flaws are discharged to die wedand, (hereby helping to maintain the <br />hydrology of the wetland. Storm watcr detention and trcnhnent are providcd in tl�e <br />Basin 2 detention vault by detaining a portian of the triUutary ofisite area, sec <br />aUove. <br />BMP RD.IS WET VAULTiTANK <br />The sedimentation vault has bcen sized for thc 6 month stonn event per the requiremcnts <br />of the CGM tifanual using the following equations: <br />Q,� = 6 month volume/36,400 <br />= 723/36.�100 = 0.0034 <br />\',,,;,, = 1676.5 Q� H use I-1 = 3.-12, <br />_ ] 676.5(0.0084)(3.42) <br />= 43 cf <br />A Cuz concretc CCP �77 Gl, or equal, provides approximatcly 1 13 c:�oPdcad storagc an�' <br />is proposcd for uc� un this projcct. <br />.l!.MomsonCra�gNugvzla Wootls Sno Ran 03-07T�ocumentslSSPoJ-011 DOCDWH/Sfffl <br />