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Mountain Coal Company <br />West Elk Mine <br />Exhibit 69 <br />lvester Gulch Facilities <br />level gate will normally be closed and will only be used to draw the Second Pond down when <br />necessary for cleaning or other maintenance. The new discharge pipe will then continue <br />approximately 170 feet from the weir/gate structure to a connection point to the existing outfall <br />pipe at approximate El. 6800 ft MSL. <br />As needed to maintain less than 2 feet of sediment in either pond, sediment or sludge that <br />accumulates in the ponds will be removed by small equipment such as a Bobcat, mechanical <br />dredging, or sludge pumps after pond dewatering. The material will either be disposed at an <br />existing refuse pile at the West Elk Mine or disposed off site in accordance with applicable State <br />and Federal laws. <br />Storm Water Controls <br />Site drainage will be consistent with drainage designs provided in PR07 and MR212, and as <br />required by Rule 4.05.6. All storm water will either be contained within the ponds themselves, <br />captured in existing road ditches DSLY-10 and 11 as shown on Map 54B, or covered under a <br />Small Area Exemption (i.e. second pond outslopes). Calculations are included in Exhibit 66. <br />The SGFA is also inspected on a semi-annual basis in accordance with the West Elk Mine Storm <br />Water Management Plan. <br />The disturbance area associated with the new pond construction will be less than 2 acres. Silt <br />fence will be installed below the pond and pipeline construction areas involving ground <br />disturbance to control sediment in the event of precipitation during construction activity. <br />CONSTRUCTION AND O&M PLANS <br />Final Plans and Technical Specifications will be completed for the mine water treatment system. <br />Construction Quality Assurance (CQA) will be performed during construction to verify that the <br />constructed system complies with the design plans and specifications. CQA will also be <br />performed to satisfy the inspection and certification requirements of Rules 4.05.9(14) and <br />4.05.9(15). An Operations and Maintenance (O&M) Plan will be developed prior to the <br />completion of construction. Start-up testing for the new mine pump and pond treatment system <br />will be completed after construction. The ponds will be inspected at least quarterly as required <br />by Rule 4.05.9(17). <br />RECLAMATION <br />Maps 58B and 59B illustrate the reclamation plan for the SFGA, including the dewatering and <br />treatment facilities. The areas will be returned to approximate original contours. The pond liners <br />will be ripped, and concrete structures, side slope liners and embankment material will be <br />placed/buried in the pond excavations. As necessary, additional fill from site stockpiles will be <br />used to establish the final grade. After regrading, topsoil will be spread, seeded, and mulched in <br />7 <br />Rev. 10197-TR83, Rev. 04109-TR116