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SMALL AREA EXEMPTIONS 10 & 11 <br />• TRANSFER TOWER & CONVEYOR -BOWIE NO. 2 <br /> SOIL TYPE PROGRESSO LOAM - C <br /> DISTURBED NEARLY BARE <br /> DATA SUMMARIZED FROM SEDCAD OUTPUT <br />STORM INFORMATION <br />Storm Type: NRCS Type 11 <br />Design Storm: 10 yr - 24 hr - <br />Rainfall Depth: 1.8 inches <br />Particle Size Distribution <br />Silt Loam <br />PS #1 SAE-30 SAE-11 <br />SAE 10 & 11 <br />Size (mm) In Out Out <br />4.7600 100.00% 100.00% 100.00% <br />2.0000 96.00% 100.00% 100.00% <br />0.4200 91.00% 100.00% 100.00% <br />0.0740 67.00°k 100.00% 100.00% <br />0.0040 82.00°k 100.00°k 100.00% <br />0.0160 60.00% 100.00% 100.00% <br />0.0040 33.00% 99.89% 96.83% <br />I• <br />STRUCTURE SUMMARY <br /> Immediate Total Peak Total Peak Peak <br /> Contributing Contributing Discharge Runoff Sediment Settleable <br /> Area Area Volume Sediment Conc. Conc. 24 VW <br /> (a[) (ac) (cfs) (acre-ft) (tons) (mg/I) (ml/I) (ml/I) <br />SAE-10 iN <br />. <br />1.20 <br />1.20 0.99 0.08 32.30 492,807 192.30 105.39 <br />Off 0.85 0.08 10.70 187417 0.03 0.02 <br /> <br />SAE-11 IN 0.38 0.38 0.31 0.02 3.80 220,193 85.92 52.39 <br />OUT 0.29 0.02 1.30 79.336 0.42 0.25 <br />STRUCTURE DETAIL <br />Fence Width Land Tie-back Peak Peak Dewater Trap <br />Flowrate Along Height Slope Distance Fence Water Time E(fidency <br />Contour Stage Stage <br />(gpm/sq ft) (ft) (cfs) (%) (ft) (ft) (ft) (tlays) <br />SAE-10 10 40 2.5 2 N/A 0.56 0.56 0.5 66.96% <br />SAE-11 10 26 2.5 2 N/A 0.31 0.31 0.21 65.92% <br />SUBWATERSFiED HYDROLOGY DETAIL <br />SW9 SWS Tme Curve UHS Peak Runoff <br /># Area of Musk K Number Discharge Volume <br /> Conc. <br />(ac) (hrs) (ds) (arft) <br />SAE-10 1 1.20 0.10 0 87 TR55 0.99 0.075 <br />SAE-11 1 0.38 0.10 0 87 TR55 0.31 0.024 <br />SUBWATERSHED SEDIMENTOLOGY DETAIL <br />SWS SOIL <br /># K L S C/P PS# Sediment Peak Peak 24VW <br /> Sediment Settleable <br /> Cone Cone <br /> (R) (%) (tons) (mg/I) (ml/I) (ml/I) <br />SAE-10 1 0.32 330 14 1 / 1 1 32.3 492,807 192.30 105.39 <br />SAE-11 1 0.32 280 9 1 / 1 1 3.8 220,193 85.92 52.39 <br />fgPiRovEO <br />PR-07 S/1 z~o 3 Exh-8 - 189 - <br />05/03 <br />