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TABLE 2 <br /> MAXWELL MINE <br /> DRAINAGE STRUCTURES FOR UNDISTURBED RUNOFF <br /> UNDISTURBED AREAS SOUTH & WEST OF MINE SITE <br /> 10-YR PEAK <br /> DIMENSIONS ISLOPE LENGTH MAN. FLOW FLOW DEPTH VEL <br /> CHANNEL IN- LOW P D P Top B T M % FT No CFS CFS FT FP <br /> DITCH i UD-1 TRAP 1 .0 8.0 1 .0 5.6 375 0.04 26.4 3.6 0.4 3.5 <br /> DITCH 1-1 D . 1 <br /> UD-2 TRAP 4 .0 30.0 8.0 3.8 400 0.04 985.4 15.2 0.4 3.8 <br /> DITCH 2 D. 1-1 <br /> UD-3 TRAP 1 .5 10.0 5.0 1 .2 650 0.04 47.0 20.6 1 .0 3.3 <br /> DITCH 4 D.2 <br /> UD-4 TRAP 1 .7 12.0 4 .0 4.9 320 0.04 113.2 54.8 1 .3 6.9 <br /> CMP-2 D .4 CIRc 3.5 9.0 120 0.024 163.5 54 .8 1 .4 15.3 <br /> FLOW INTO PURGATORIE RIVER FROM CMP-2 <br /> 18 <br />