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NOV 01 '91 14~dc GUFFORD&bWLGECK <br />Colorado Department of Health <br />November 26, 1990 <br />PaSe 2 <br />~ yv(~uu i 1~ <br />open coal stockpile. In order to place more coal in the open <br />coal stockpile or to rotate the coal in the silo, coal was peri- <br />odically transferred from the silo into trucks and hauled to the <br />coal stockpile. All of the coal placed in the open coal stock- <br />pile was eventually reclaimed into the dump station then conveyed <br />to the silo. U.S. Steel ocG,asionally bought coal from other <br />suppliers to supplement their production. This coal was hauled <br />to the dump station in highway trucks. A schematic diagram of <br />U.S. Steel's coal handling operation is enclosed as Exhibit 1. <br />6. 5MC has been operating the surface facilities from late <br />1989 until the present. SMC has hauled the coal to the surface <br />facilities from another mine via highway truck. The highway <br />trucks either dump directly into the dump station or into an open <br />coal stockpile. The coal that is discharged into the dump sta- <br />tion is conveyed to the silo. The coal that is placed in the <br />open coal stockpile is eventually reclaimed into the dump station <br />then conveyed to the silo. During 3989 49,958 tons were handled <br />by the surface facilities. During 1990 to date 169,257 tons have <br />been loaded from the silo. Up to 500 tons are currently stored <br />on the ground. Up to 20,000 tons have been in the open coal <br />stockpile during 1990. A schematic diagram shooing SMC's current <br />method of operation is enclosed as Exhibit 2. <br />^r. SMC plans to beEin mining from the Sanborn Creek Mine <br />during 1990. An APEN has been obtained for the Sanborn Creek <br />Mine facilities and conveyor system. The Sanborn Creek Mine <br />conveyer system is designed to discharge into the dump station at <br />the existing mine facilities. The documentation supplied with <br />the APEN for the Sanborr. Creek Mine indicated that SMC assumed <br />that an emission permit was not required for the existing mine <br />and surface facilities. <br />8. The existing surface facilities will be operated to <br />support the Sanborn Creek Mine. Coal will be delivered from the <br />Sanborn Creek Mine to the dump station via conveyor. The coal <br />will either be conveyed from the dump station to the silo or it <br />will be placed in an open stockpile. Coal may also be delivered ~ ,_ <br />to the surface facilities from another mine via highway trucks. <br />A schematic of SMC's proposed_future operation is enclosed as <br />Exhibit 3. <br />9. SMC's future operation plan for the existing surface <br />facilities does not vary significantly from U.S. Steel's historic <br />use of the facilities. U.S. Steel used the damn station, tipple, <br />open coal stockpile and silo in the same way that SMC intends to <br />use them. Although 5MC will haul coal onto the site from another <br />