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<br />CONTRIBUTING AREAS: <br />SEDIMENTATION POND 003 <br />SUMMARY OF CALCULATIONS <br />AREA <br />003-1 <br />003-2 <br />003-3 <br />003-4 <br />003-5 <br />TOTAL <br />SEDIMENT DETENTION: <br />(1AXWELL MINE <br />RUNOFF STORM INTENSITY <br />ACRES SOYR-24HR SOYR-PEAK (IPH) <br />3.3 0.52 2.84 <br />2.2 0.17 4.10 <br />10.3 1.63 2.48 <br />6.6 1.00 4.79 <br />2.4 0.38 2.42 <br />24.8 AC 3.70 AC-FT <br />60X SEDIMENT LOAD: 0.06 Ar,-FT PER ACRE REQUIRES 1.49 Ac-Fr <br />IOCX SEDIMENT LOAD: 0.10 AC-FT PER ACRE REQUIRES 2.48 AC-Fr <br />VOLUME SURFACE <br />T RA AC-FT ACRES ELEVATION <br />BOTTOM POND - <br />60X SEDIMENT 1.49 <br />100X SEDIMENT 0.99 <br />RUNOFF __3.70 <br />DIRECT RAIN 0.43 <br />TO SPILLWAY 2.37 <br />TOP OF POND - <br />TOTAL 8.98 <br />EMERGENCY SPILLWAY: <br />1.47 7,109.5' <br />1.53 7,110.5' <br />1.57 7.111.1' <br />1.71 7,113.4' <br />1.73 7,113.7' <br />1.81 7,115.0' <br />- 7,117.0' <br />AT A STORM INTEP~SITY GREATER THAN A 25-YR-24-HR <br />EVENT. THE FLOW IN THE SPILLWAY SHALL NOT EXCEED A <br />DEPTH OF 0.99 FT ALL04JING 1.01 FT FREEBOARD. <br />11 <br />.~ <br />