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<br />(3) Mine Facilities <br />Structures <br />All support facilities associated with the surface mine will be portable and moved as the mines <br />progress. These facilities will be limited to offices, lunch rooms, and equipment and supply <br />storage. No permanent buildings or structures will be constructed to support the surface mines. <br />A small (approximately one acre) service area will be located to the north of and adjacent to the <br />Jeff Canyon Haul Road, as shown on Figure 2.05.3-146 and Map 2.05.3-2. The service area will <br />be used for placement of portable fuel tanks, ANFO pull bins, a cap house and miscellaneous <br />equipment. <br />Portable fuel tanks will be located within earthen structures constructed to safely contain tank <br />capacity. Transformers will be skid mounted and will reduce power from 69kV to 12,470 volts, <br />which will be distributed to the surface mine at 4,160 or 7,200 volts. Power will be supplied by <br />San Isabel Power from the transmission line which parallels the Purgatoire River. <br />Roads <br />• Haul roads will be located to transport coal via tractor dump-trailer and smaller [rucks, and to <br />provide access for personnel and equipment from underground and surface mine locations to the <br />rail coal loadout facility. Haul road and access road preliminary designs, and construction <br />drawings were prepared by or under the direction of a qualified registered professional engineer <br />experienced in the design and construction of roads. Roads, including light use of roads, are <br />shown on Maps 2.05.3-1 and 2.05.3-2. <br />A number of best management practices will be employed to minimize erosion and contributions <br />of suspended solids to stream flow. To the extent possible using the best technology currently <br />available, haul roads shall not cause damage to fish, wildlife, and related environmental values <br />and shall not cause additional contributions of suspended solids to streamflow or to runoff outside <br />the permit area. All exposed surfaces will be stabilized (cuts in unconsolidated materials and fill <br />embankment slopes will be mulched and seeded, and the travel way will be graveled). The entire <br />haul road system is within the permit area. Mulching, straw bales or silt fences will be used as <br />temporary measures of sediment control until vegetation protection is established. Straw bales and <br />closely-spaced cross drains and relief gaps (located at natural upland or incised drainages) reduce <br />flow velocities. Recovered topsoil may be used to promote a good vegetation cover. Slash and <br />debris may be left at the toe of embankments to trap sediment in runoff. The gravel surface will <br />be watered to provide for dust suppression (control) from haul road traffic. <br />`J <br />/11/x'0 <br />PERMIT rtv\OCiober E5. 3001 2.05-13 (Revised 10/18/01) <br />