|
Knight H sold Table 2.7
<br /> C O N S U L T I N G Cripple Creek and Victor Gold Mining Co.(Newmont)
<br /> Cripple Creek and Victor Mine
<br /> Stormwater Management Plan Evaluation
<br /> Existing EMPs 2x 10-year/24-hour Storm Event Evaluation
<br /> Basin Total Area Composite Curve Number 10-year/24-hour Storm 10-year/24-hour Storm 2 x 10-year/24-hour Storm Steffens(2012)Design As-built Storage Volume Capacity-Sufficient or
<br /> (Reference Figure 2.1) (ac) (CN) Event Runoff Depth(in) Event Runoff Volume(ft) Event Runoff Volume(ft') Storage Volume(fP) Capacity(ft) Insufficient
<br /> 32.2 74 0.54 63 294 126 587 Not Available NA 38,759
<br /> 26.6 91 1.52 146,679 293,359 457,380 0
<br /> EMP 8b 137.3 73 0.50 250,997 501,995 NA 560,736 Sufficient
<br /> 130.1 91 1.52 717,730 1,435,459 NA 163,690
<br /> 156.7 73 0.53 301,134 602,269 248,292 270,351
<br /> 58.2 84 1.02 214,967 429,933 NA 286,146
<br /> 166.3 70 0.40 239192 478,383 104,544 74,817 -
<br /> EMP16 5.4 74 0.56 10965 21,930 209,088 167,265 Sufficient
<br /> EMP 17 17a 17b combined 17.5 91 1.52 96,759 193,518 858,132 526,446 Sufficient
<br /> EMP 18 49.0 71 0.44 78,693 157,385 248,292 199,631 Sufficient
<br /> EMP 20 18.5 73 0.50 33,747 67,494 392,040 320,145 Sufficient
<br /> EMP 21 23.8 69 0.38 33,276 66,551 169,884 89,235 Sufficient
<br /> 21.1 64 0.24 18,657 37,313 56,628 4,698 Igo
<br /> • 291.6 50 0.02 17,920 35,839 NA 20,100
<br /> Notes:
<br /> 1.10-year/24-hour storm event depth:2.4 inches,per NOAA(2013).
<br /> 2.Capacity is deemed sufficient if the as-built storage volume capacity provided by CC&V(below spillway inlet or 2 feet below crest if no spillway)is equal to or greater than 2x the 10-year/24-hour storm event runoff volume.Otherwise,insufficient.
<br />
|