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<br />------------------- <br /> <br />TABLE 11-4 <br /> <br />FULL DETENTION ALTERNATIVE <br /> <br /> Basin Basin Outlet Works UndetainedlDetained Flow <br />Detention Pond Dam Height Outlet Channel Channel 25- Year 50-Year 100- Year <br />Pond Size to Weir Crest Pipe Dia. Length Dimensions Storm Storm Storm <br />No. (ac-ft) (ft) (ft) (cfs) (cfs) (cfs) <br />I 5.3 10.0 18" CMP w/ 6" Orifice,l) 600 2'W x 3'D x 2:ls~2) 48/3 56/3 66/3 <br />2 2.3 10.0 12" CMP w/ 6" Orifice 1,100 I'Wx I'Dx2:lss 30/3 35/3 42/3 <br />3 3.3 10.0 12" CMP w/ 6" Orifice 650 I'Wx I'Dx2:lss 42/3 50/3 60/3 <br />4 3.3 10.0 12" CMP w/ 6" Orifice 0 I'W x I'D x 2:lss 42/3 50/3 60/3 <br />5 2.7 10.0 12" CMP w/ 6" Orifice 250 I'Wx I'Dx2:lss 35/3 41/3 49/3 <br />8 2.7 10.0 12" CMP w/ 6" Orifice 600 I'Wx I'Dx2:lss 34/3 41/3 48/3 <br />9 1.2 10.0 12" CMP w/ 6" Orifice 250 I'W x I'D x 2:lss 15/3 18/3 22/3 <br /> <br />Notes: <br />I. Existing outlet CMP dimension for Detention Pond No. I <br />2. Existing outlet channel dimensions for Detention Pond No. I <br /> <br />Thl 4-FullDctAll <br />1121/98 <br />