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' UTE ENGINEERING & SURVEYING CO. <br />1 p Np <br />R = 40 Figure 1, page 6, pned~eti.ng Ra~nba.2f Enoa~.on Loaees, U.S. Department a6 <br />Agn~Leueture. <br />K = .37~for lO1F soils (reference Delta Colorado SCS) <br />P. 0. Box 674 355 Main Street <br />DELTA, COLORADO 81416 <br />(303) 874-7593 <br />Rev.ih~.onh wce noted In Sevt~ -t T e <br />LS- ~ ~,/-,~•.4• I~ ~G~;.y! ~:.t`d + .f,i,., .5'..r cs +..~G:.: <br />Segment t9~ ~~; L.), <br />1 20.81 400' 23.3 <br />2 5.71 400' 2.74 <br />3 30.54 400' 45.23 <br /> <br />LS _ ~ 1 t - (t-I <br />` ~ 11 .:Si <br />t-r ~r..,., <br />LS = .19(23.3) + .35(7..74) + .46( 45.23) = 7.6.19 <br />C = .001 Table 11 , page 33, Pred.Le.tr:ng Ra,Lnba2C i=rtob~on Lasses, U.S. Depar~nent <br />p = 1 ob AgrLctoCtwce. <br />A = 40(.37)(26.19)(.001)(1) =p,39 tons/A <br />Sediment yield = 27.55 A (.39 T/A) = 10.68 <br />3 year sediment yield = 10..68 (3) = 32.04 T <br />-32.04 :ors sed. (2000 #/ton) 985.85ft3 <br />65 #/ft = <br />Calculate sediment load from affected area <br />A = RKLSCP <br />R = 40 figure 1 -See above rebenenee. <br />K = ,69 (highest value by exp) <br />LS Length = 300 bee# SQope = 2% <br />,,,,, Rear Coal Mine 8580 <br />SNFCl NO 3 OF __ 6 <br />~.ni ~uinnnin PDk nnir 3-4-80 <br />uu crinur ... -. _-- once __---- -- <br />Figure 7_.05.3(4)(b)-2 (corr't) <br />T = 10.68 Tons <br />Year <br />REVISED May 15, 1981 <br />,...,. e.ni.e~oom /.V'r.'n 4Lr, le.mo~e Maas ouro <br />