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wafer [o the surface facilities. A second centrifugal pump delivers water to the mine for dust control and fie p,oteetnonn.
<br />A second source is a Nvate,-like, which runny ffonnn a Colo,ado Yampa Coal Co,n,t,anny ,nanhole station 220 feet to a
<br />box1iolC ippio.:i,i,ately 170 tee[ deep, constructed of 4- inch PCV pipe, as shown on Map 24, Surtace Facilities. This
<br />line will provide water to the TC7CYCC water system.
<br />TC proposes to install an additional waterline between CYCL and TL. The line will be installed between CYCC''
<br />wash bay and TCC's pUlliphouse. The approitiunate location of the wale, linne is shown on Map 24, Surtace Facilities.
<br />A 40 -foot Corridor ,vill be disturbed during installation. TC is adding an $-inch HDPE, 400 -toot long waterline
<br />between Location 6 inspection manhole and the treshwater borehole. A 40 -foot Cv„ido, will be diz,nl,bed dai nig
<br />installation.
<br />Mine Water Discharge and Recycle System (Revised - 1x09 -i0, TRO -73, MR07-216, MR08-230, MROS-231,
<br />MI'(1,-L88, lyll'(16-2915)
<br />Transfer of nnnin,e %%JTI 10 TLC ZW,farc Cat oecui at six locations, [he Portal/0-Entry Borehole7Pond D (Sites 109
<br />0,lactive)7005), the Fish Creek Boreholes (Site 115), the iORT Boreholes (Site 001 under the veneral Coal Permit, the
<br />18 -Lett Shaft Site (connects to Fish Lreek Pipeline), and the 19 -Right Bo, chole and 5MN Bo,el,oles (both connect to
<br />6mN Mi„e Watcci Re3ei voii). Water discharged from the Portal and 0 -Entry Borehole (general mine discharge) is
<br />routed through the Area 1 Pit Mine Water Storage Reservoir, with discharge to Sedimentation Pond D p,ioi to
<br />discharging to Foidel Creel: at Site 005. Mine discharge ware, fionn, the Fizl, C,e& Bomholes (SWMD) may be treated
<br />P1,101, to U.1113I1Ti to the ,,nine .vat,:r systenll or discharge to Fish Creek at Site 115, or may be pumped back to the Area 1
<br />Pit for use in the Washplan( or discharge through Pond D and Site 005. A treatment system for the iutct (tJiv1D)
<br />Dewatering Boreholes Inas not bee„ C'v„at,uctcd to date, altln'vugl, TCC may install a temporary mobile treaullent
<br />syste,rl. The water can be pumped from this site directly to the mine water system, to the 6MN Mine Water Storage
<br />Reservoir and 6MN Million -Gallon Tank (connected to the ,iniac ware, �yaTcnn,), back to the A,ea 1 Pit fon use i„ the
<br />Wa3hplaia or Tluougl, Po„d D aad Site 005, or directly discharged to Foidel Creek at Site OU1, under the Coal
<br />General Permit. Mine water can also be transterred tronl the I8 -Lett Shatt Site to the existing pipeline dinning f,on,n
<br />the Fish Creel: Water Treatment Facility to the A,ea 1 Pit. Henna The A,ea 1 Pit_ this water can then be transterred to
<br />.my of Tl,e of rise po;ats previously identified. Mine water trom the 19 -Right Dewatering Borehole and 5MN
<br />Borehole is transferred to the 6MN Mine Water Storage Reservoir, where it can be routed back to the Innine wate,
<br />system tlll'Otlgll the 61viN water borehole. Will] futln,e appn'vvaI3 and un'vdntncatnous_ water troln the 5MN Borehole
<br />cOrIld be routed tL,i oayL, n lila,l,led passive treatment system for re -use or discharge from the 6MN Reservoir.
<br />U, addition to the pi ilna„*) ,,nine ,vatei discharge locations, there is a very limited potential for production mine water to
<br />discharge at the NOI'lh\\esL Mains Ventilation Shatt through a pressure relief7accumulator pipe for the p,oduetio„ nn,inne
<br />,v\ater s)stenl. Although di3CLarge occuired in, n„id-2005 due to CalaShONIuC tailure of both the primary and back-up
<br />p1*1733LIX relief , al, es, TCC has taken positive steps to assure that this site will not discharge in the future.
<br />TC previoUSlj Co„StrNCted a ,,nine wate, pipehinne tion,, the Fish Creek Water Treatment Facility that ties into the
<br />B.,iiiCade Cl,a,,,beiTCM-2 Boreholes and TORT Water Transter Pipeline, and has more recently constructed
<br />additional pipelines tying these tacilities to the 6MN Mine Water Storage tcesC,voi, and Million -Gallo„ Tannk and
<br />the Area I rit Storage Rczxrvoir. I„ ender to dewatei the ,eceatly completed Northern Mining District and the new
<br />Western Mining Disufict, TC has, or proposes to complete additional pipelines trom the 19 -Right Mine Dewatering
<br />Borehole. and the 18 -Left Ventilation Shaft Installation,. The locatno,,3 of the,)e pipehin c;3 an,d an�or;zaed facilities
<br />a, �I,ovv„ o„ Map 24, Surface Facilities. The water pipeline network enhances TC's ability move either treated or
<br />untreated aline water between mine areas and the ability to recycle mine water, thereby minilnnizing the volume of
<br />sUpplenlental sUpphy water needed to unCM Mille ux,gC.
<br />Portal and 0 -Entry Borehole and Transfer Pipeline (MR08-z30, MR08-231) — Watc, fionn, tie nnnnnne ware,
<br />3y3te,nn Ca„ be di3CLarged fro,,, the Minae Portal, where it flows by gravity or can be conveyed by temporary
<br />pipeline to Ditch D-2 and the Portal Sump. A transfer pump in the Portal Sump moves the water through a binried
<br />HDPE transFer pipeline to the Area 1 Pit Mine Ovate, Stmage Rez)e,voi,. Wate, can, alae be t,auste,red from Tile
<br />,,nine waici 3y3icni to Tie Anea 1 Pit through the 0 -Entry Borehole and pipeline. The U -Entry Borehole is a 12 -inch
<br />(maximum) diameter steel -cased borehole extending tronl the 0 -Entry Fan Pad (location show„ On the Su,faCC
<br />F.,CIlitie3 and tiC3l,-Water Sy3tcu,3 Map, (Map 24, Sleet I of 3)) to a depth of approximately 100 feet, where it
<br />daylights in the O -Envy of the underground mine workings. Because they are in previously disturbed areas, the u
<br />MR 16-295 2.05-50 04/01716
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