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.Ian 19 2005 1:32PM Leaf Engineering, Inc. (9701 392-0300 p.2 <br />Leaf Engineering, Inc. <br />SfA 13th Suet <br />Greeley, CO 80631 <br />Irmrect Leif, P3E. (970}33I-0110 Phone <br />(970}391-0300 Fax <br />taereal 1¢aI®gwesLa¢t <br />December 14,2004 <br />Tom Schriena <br />Division oFMines and Geology <br />Cobnado Division of Natural Resovrcea <br />1313 3hertran Street <br />Room 215 <br />Denver, CO 80203 <br />Re: Vetrn Durham Pit Flood Stody: Job No. 10166 <br />Dnr Tom: <br />Thank you for diawesing the Yana Durham Plt Flood Study with rt» on WE telephone M you are aware, <br />I have bcenretained by Bliea Produco and Andereeo 6elvege m [avlew the Anderson Cmtmilting, Inc. <br />October S, 2004 HydreuEe Analyse and impeats'from uncertified levee coratrw^tion on the mouth bank of <br />the Cache I¢ Poudre Rive coat of G'acetey. 8peoitically, [will review the 1IEC-2 tnodeb prepared by <br />AMenon Cotttultmrta, Isw., which arc the tec)mical basis for the remmmmdationa in tha Ootabes 4, 2064 <br />engines repurl. In addition, I will ideodty aay teshrdod defioimdu with the hydraulio msumptiona and <br />model structure, ¢nd provide tkese diroctly to Andenwn consulting, hro.,. Pinally, ono I egret with the <br />HEC-2 beaetine and existing conditlons hydraulic calwlatlons, l mote aaiat in dewlopmant of pcmlanent <br />Road cannel measures. 1 will else assist in the development of any interim Rood control rrrse•uas should <br />my clicnn agree to the implementation of such tnidgation mecums on lF¢ir respective properdea. <br />Pleane provide me wiQl a CD of the entire Varra DMO Sle, hd•78-036, for [he Durham Pit. Fmlosed is o <br />check for S7 to cover the preparatldn of the CD. <br />aa: MikcHliaa <br />Deaa Mdereon <br />Sincerely, <br />L <br />Pornat Leat: <br />Water Rights • Hydrology • Hydraulics • Water Quality <br />E'JianBllaASCaamnPema Angnal b00 11 ¢I O,dm <br />1 <br />FORREST 0. LEAF _ 1EJl41mD4 <br />Di.ioaa arw>9ra Rwu~•Dmner 1411 <br />s. <br />CIIeM P.+ryman _ <br />ckn lair oc la/aa s.ad <br />