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" rA')J5 CCeL ELSIN C:;vuJ3 COAL <br /> 1058 CO;;NTY ROAD 100 • BOX.500 <br /> CAR60NDALE, COLOaADO 81523 <br /> TLX <br /> F .E . . 't a!'724 <br /> fAX <br /> E 3 :r n s:�• z F: 6 <br /> 1 'l , 1988 <br /> Ci:ndace Tl;o:npson <br /> I ydrolcgist <br /> Mined Land Reclamation <br /> 1 :s13 Sherman Street , Room 423 <br /> T`. nver, CO 80203 <br /> 0 022 <br /> :.ult of the hove referenced NOV Mid--Continent Resources <br /> .:aired to submit a plan detailing methois we intend to use <br /> 1_ :udle i-c-fuse in a controlled manner until the Fxtensicn of <br /> + :.:: nveyor can be installed . The purpose of this letter- is to <br /> ott ! ire this plan to the Division . <br /> is ic. llti , tl.e problem that now exists at the Sutty Films .s l;� <br /> 1 t•ut that has been dug out at the existing di-%barge j­,,, I nt . <br /> '•, c % .ited this hole ahead of time to allow coi;stiuction of the <br /> be•1 t t o L,roceed in a timely r:anner. As a resin t of t h ; s '_ ; w <br /> s} t- t being excavated, an upward slope now l=xists in all <br /> di rF-ct ions around the refuse discharge pc i „t . During dry S -a ' 1, r <br /> this poses no problem with refuse disposal . However, as we noted <br /> during your inspection, when we experience a large snowmelt or <br /> pi-r-cipitation event the water flows from the edge of the <br /> dt.-.,it-ssion back down to the conveyor building area. In order to <br /> f gent any more problems with run-off until the new belt is <br /> sti-ucted Mid-Continent proposes to implement the following <br /> p . <br /> I A ditch sired to carry a 100 yr/24 hr precipitation event <br /> : -e placed from the conveyor building down along side the <br /> yor ac(,c,s and t o thn ponds . <br /> 2 ) A sr all interceptor ditch will be Blared on the south <br /> of t 1, di s, h,)i t;r .,rr-a in refuse) in order to pick--up :-tny <br /> d ro ty it to the 100 } r ditch . This ditch will <br /> on a c1:ii I bas is . <br /> 3 ; ; l;t ntii- area of depression will have a positive slope <br /> l.e i :i r cif 1 e to the 100 year ditch. This will prevent <br /> g of t •i ;.,it he i c f::se pi le. <br /> n has t-n,ied there :,h,,uld 1.e no pr.•1, 1t ra <br /> f �- it ilii :,it-a with the .b0%-- -. :-iificati <,r:s in pl ,,-e . <br /> 162 <br />