|
<br />
<br />TABLE 2,05.3-1
<br />Data for celcul atlon of runotf to culverts and runout ditches along the existing haul road, Design based on 10-year, 24-hour storm
<br />equal to 1,6 Inches of precipitation. "Peak Flors In Colorado", Technical Release No, 55, SCS, used for determination of peak flor,
<br />SUN COAL COMPANY - MEAOOMS N0, 1
<br />ROUTT COUNTY, COLORADO
<br /> Solis of Area Typa Hydrolo gic Group Curve Number
<br /> Cochetopa 50F C 73
<br /> Routs loam 2Vf C 73
<br /> ' Routt loam 2VO C 73
<br /> Skylick 66F C 73
<br /> Unnamed 9E B 79
<br /> Disturbed D 91
<br /> Item Culvert Acres of Hydrologic Area In Curve UnadJusted Peak SI oDe Slope Runoff Peak Discharge
<br /> Number Number Dre inege Soll Type Group Group (~) Number Discharge (CFS) ~ Factor Factor (CFS)
<br /> I 10 2,967 50F/66F C 100 73 6,2 46 1,15 .16 1,14
<br />~ 2 9 5,116 50F/66f C 100 73 9,3 48 1,16 ,16 1,73
<br />~ 3 8 1,119 50F C 100 73 2,9 44 1,14 ,16 ,53
<br />~ 4 7 12,197 SOF C ~ 100 73 18,0 43 1,14 ,16 3,28
<br /> 5 6 1,628 50F C 100 73 7,3 44 1, I4 ,16 1,33
<br /> 6 5 1,033 Disturbed D 100 91 3.0 20 1,03 ,62 2,53
<br /> 7 4 1,306 2VD C 100 73 3,3 29 1,09 ,16 ,57
<br /> Plus 1/2 haul road from Culvert 5 to Culvert 4 - east ditch ,75
<br /> Total T.3'f
<br /> B 3 2,289 2vD C 58 73
<br />
<br />1,652
<br />9E B
<br />42
<br />79 75 7,8 19 1,03 ,20 1,61
<br /> Tote l ~1-
<br /> Plus: haul road from RS - R3 2,63
<br /> Culvert 5 ditched across hillside to Culvert 3 2,53
<br /> Area 7
<br /> Total T2T
<br /> 9 2 12,810 9E B 100 79 19,5 17 1,02 ,31 6,16
<br />A Plus haul road from Culvert 3 to Culvert 2 - east ditch 74
<br />co Total Ti,~46
<br />
<br /> 10 I 24,810 9E 8 100 79 32,0 30 1,12 ,31 11,10
<br />~
<br />
<br />tp
<br />o+
<br />
|