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BASELINE ENGINEERING CORP. SHEET NO. 13 OF ERR <br />Land Use Planning Civil Design Consultants JOB NO. co20108 <br />VOLUME CALCULATIONS FOR PHASE 2 TEMPORARY SEDIMENT POND NORTH <br />KONIG BORROW PIT <br />DESIGNED BY CSR FILE: drainage calcs.w63 <br />CHECKED BY: RAB DATE: 10116110 <br /> <br /> 'Tributary Area = 7.63 acres Required Volume = 13740 cf <br /> Offsite Area = 2.25 acres Required Volume = 4046 cf <br /> Total Volume = 17785 cf <br /> (Required Volume = 1,800 cf X Area) <br />TEMPORARY SEDIMENT POND <br /> ELEV (ft) AREA(sf) AREA*(sf) VOLUME(cf) VOLUME"(cf) <br /> 5068 5003 0_ 0 0 <br /> 5069 5862 16280 5427 5427 <br /> 5070 6779 18945 6315 11742 <br /> 5071 7751 21779 7260 19001 <br /> USE CONIC METHOD AREA*=AREA1+AREA2+(AREA1xAREA2)12 <br /> FOR POND SIZING VOLUME*=1/3 x depth x AREA* <br /> Elevation = 5070.8 ft DEPTH = 2.8 <br /> 1/2 Volume Depth = 5069.5 ft DEPTH = 1.5 <br /> * Note: The sediment pond is sized for the disturbed tributary area within the pit and the offsite <br /> area. <br /> OUTLET DETAIL CALCULATIONS <br /> A pump with a floating suction line with a flow rating of 150 gpm (0.33 cfs) will drain the full <br /> volume within the maximum allowable time of 72 hours.