2008-10-03_PERMIT FILE - C1982056A (4)

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Another portion of the system as shown on Map 24, is utilized to supply water to the mine. A borehole, and pumphouse were placed at the Site 114 spring, and awater-line buried from the pump over to the million- gallontank and borehole. The line was buried to an Pump, 30-inch diameter approximate depth of 7 feet. In order to facilitate the installation of this line, topsoil was bladed to the side to provide an acceptable work azea. uPBmded with gravel to allow yeaz-round access to the um h The current tem o Pad. The original borehole culvert was backfitled with washed ootc ~th the topsoil bein P rely access road was to the Site 114 flume, This will provide a reserve diversion g wmdrowed tO isle side of the thin I-foot of the existing overflow point leading A powerline will be installed from the comer of Colorado ~~ should problems develop with the 30-inch borehole. located at the spring. This will require the installation of 3-4 p we ploles betxeen the mobile ri P Y' equipment parking lot to the pump g will be utilized to install the poles. Ahernatively, TCC may tie into an exi parking lot and the pump. A extend it some I50 feet to the proposed pumphouse. A minimal ~g buried the existing line and burial of an amount of digging will be necessary to allow testing f powered generator will be used t hesion in the previously disturbed area. bring the interim eri cable will run from it to the Pump. The generator will be set on the road leading to the PM Uay,dand a Pump. As soon as the powerline is installed, the generator will be taken out of service, When the mine fast experienced a water shortage, equipment was brought into the spring area to deepen the spring and remove the flume from the spring's outlet. This resulted in a minor amount of disturbance to the reclaimed site when the snow was pushed out of the way. When ground conditions allowed, the disturbed azea as necessary. Likewise, the material excavated from the spring was stabilized or placed back into the excavated hole. ffthe spring is to be utilized for more was smoothed and reseeded If the road to the site is continues to be usanedl~vhile ~e a fence will be constmcted around the spring to kee with the temporary seed mix, ground is soft, the topsoil will be bladed to the side and stabilized seeded with the Upon abandonment of this system the topsoil would be redistributed over the site and approved seed mixture. TCC also proposes to temporarily divert the portal mine disehaz emergency water supply to the trillion-gallon tank. This will ginvolve Sooting Site 1109 flows rder to au operation center by means of a 6-inch diameter line ] ~ gment the flow to the Site 114 Ymg on the surface. Water di upslope toward the inscribed from the PM road bculvert to S tehi 14 in orders tohroute the flow to the hurt tem o~ from this pipe will then overland line will be disconnected allowi P raz}' ditch tray need to be removed. ng the 109 discharge to again flow to Pond pp~ When no longer required, the and the temporary ditch will be A Pumphouse was constructed at Pond A to supply water to the coal r aPPmximately I S x15 foot metal building on a concrete slab. The building contains ~e plant' The The water is pumped throu pumphouse is an Tipple to Pond A. ~ a new 8-inch waterline buried along the shoulder of pumps and associated controls. The waterline Wins from Pond A to a new valve box at the exlstmg access road from the to a new valve box at Location B. The new &ne then continues adjacent to Haul R Location A. The buried waterline continues to new Location C. New waterlines were laid from Location C into the preparation plant and to exiyrtin L The location of the new waterlines and valve boxes aze shown on Ma 2q Sn g I'O~ion 8 and on be located within existing disturbed areas. P rface Facilities. Ail new watedi~nes will Pumnhouse Addition fMR06 205) The existing pumping system delivering water from the TCC million-gallon tank to the underground operations would not meet anticipated water requirements for the new longwall. To requirements, TCC installed two I50-HP, 480-Voh, variable fre uenc system provides meet increased water delivery Peaking capacity and allows one pump to serve as a backu dnve «Dj Pumps. The dual-pump The pad for the Pumphouse is in a previously disturbed area, but r P under normal operational conditions. establish a stable foundation. The pad foo equired some fill placement and grading to compacted to one-foot below r tPnnt was over excavated, and suitable fill material was placed and extending approximately 4 feet de e The Pumphouse foundation is a 6-inch thick reinforced slab with the footings ep. Following foundation excavation and construction, six inches of/.-inch TR07-59 2.05-52 02/27/07