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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 1 TEMPORARY SEDIMENT POND SOUTH <br />KONIG BORROW PIT <br />DESIGNED BY: CSR FILE: drainage calcs-b3 <br />CHECKED BY: RAB DATE: 10116110 <br /> <br /> Tributary Area = 6.93 acres Required Volume = 12465 cf <br /> Offsite Area = 3.89 acres Required Volume = 6997 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 /> 5062 4056 0 0 0 <br /> 5063 4807 13279 4426 4426 <br /> 5064 5614 15616 5205 9631 <br /> 5065 6478 18123 6041 15672 <br /> USE CONIC METHOD AREA*=AREA,+AREA2+(AREA1xAREA2)112 <br /> FOR POND SIZING VOLUME*=1/3 x depth xAREA* <br /> Elevation = 5064.5 ft DEPTH = 2.5 <br /> 112 Volume Depth = 5063.3 ft DEPTH = 1.3 <br /> * Note: The sediment pond is sized for the disturbed tributary area within the pit. <br /> ** Note: The required volume for the offsite tributary area, which includes the undisturbed portion of <br /> phase 2, will be contained within the pit by a berm. <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 volume <br /> within the maximum allowable time of 72 hours.