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<br /> <br />as generated b; this method based on va_'ues cr:nFrated ny ocher aethods. Infor- <br />r..3ti~n on this method is contained in Section I of .7 oeErdix Q. The crera for <br />used an estimate cf <<".0 I:1ChP_5 of precipitation fora 25-year, 2~-hour atom fcr <br />design o!lrposes. <br />D_'version and CoIlecticn Ditches <br />,^ire .major_'ty of e:c sting anr.' propcsed ditches a` the Tra mer :<_..~ sii:a div_rt <br />the rrm off from active oils into do:onstrea.m se:'i,aent ponds. <br />Ctah Interr.a c onal, Inc. has produced estimates of the peeF: flows to ce expected <br />°rom the 2-yezr, ?:I-hour storm and has adaouately dasicne~i ti;e ditches to convey <br />rhes_ flows. Se^sraZ sections of ditch had sloces which axceedsd _ ircreas_na <br />the possibility of eros'on. In discussions :o_.th the Divisicn and based on zddi- <br />t-oral information incorporated into the permit, it wzs demarstratad that ;:hesa <br />areas woald nct ex[erier,ce erosion as dzsicned. <br />s?d_~ier.t Ponds <br />There are rresentiu _'6 strc~tures designed as sediment control: panes on t_he _-te. <br />The applicznt is also using an abandoned pit, `he Empire En._rcy :'it, for sed-- <br />mEnt. ccntroi. This pit does not ,meet al: of the sper_•ific des~.gn reeuiremc-nts <br />• of 4. D5. 6. Fo.r t.`.e following .reasons, the Divisicn deers i*_ unreasonahle to <br />_mpose the soecif.ic dNsign requirements rf 9.0.6: <br />(]) The pit is an existing disturbancE and will be reclaimed by Utah <br />Internati oral after it is no lancer needeci for sediment control. <br />(c) It is capable of _torinc well over the 10-year, ~4-hour s~orm <br />volume rt;;_hota discharce, has more than adErruate sae~ment stor- <br />dg@ VOZUme. <br />!3) Fniiure is e::tremely un1i1`~eiy under cry event. <br />.ll1 cords 'nave been .`ourd to be adegcateiy sized for bath .~ed._;rent stcrana a:~d <br />°lood voiune resulting from *_he 10-uear, 74-!;our storm. Ali ponds hac-e been <br />professionally certified. <br />For all ponds storing rare than t:.c err?-feet of water witl:ou` any me.;ns of <br />discharge, t,`,e acquisitian o° :pater stor.;ce rights is required. °our r.~nds at ti;e <br />Trapper F;ir.@ exceed 2 acre-feet of dead Mora oe. T);e acpl;. c~rrt .has an,ni.i ed _'or <br />/a to storace rig,h is ~.nd evairJ r,: t: on i.osacs or ci cad /~ool sh_o ~r~~~„c ir. D:a ::ri c~ r <br />f:'a te. Lcurt_ <br />Thera are eight sediment r_onds proposed to be constructed dur:.ng this Hermit <br />term by t.h= apo'icant, for whi:h no des,:nn inforr,.~t~on iss been r,~ven. ^he <br />arnl.i cart has committed `c the s;inmi ssior. of desicn info;: •na lion to t;:e Di•;is ion <br />and cbtaini.^-7 approve? prior to ronstri•ction. <br />• Tine :;ppL•x:nt has corunitted [c satisfe~inc the requirEments a_° R"ie ~.OS.'(9) <br />,: r. c? obtarninc :or;."an a,-;crcva7 of the Dic-~s:on nrior `~ r~mova.t o.`. anu sedi- <br />Tentaticn ponds. <br />