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4. The Trapper Mine proposed to use utility waste from the Craig Power <br />Station for backfilling into the mine pits. The average annual volume <br />of utility waste, consisting of fly ash, bottom ash, and scrubber <br />sludge is 160 acre-feet, after compaction and would be placed randomly <br />in the three pits. The waste materials contain high concentrations of <br />chemical constituents which could seriously degrade the ground water <br />quality by infiltration. A discussion of probable impacts to the <br />ground water is contained in the EA, page 5, and in CMLRD's Decision <br />Document, pages 53-55. To mitigate the probable impacts, the ChII.RD <br />required the applicant to selectively place rather than randomly place <br />the utility waste in the three pits. Six placement criteria were used <br />to minimize contact with water. <br />5. The configuration of the post-mining topography was presented for the <br />Trapper Mine. A comparison of the post-mining contour map with the <br />proposed permit perimeter indicates that the average elevation of the <br />reclaimed surface will be slightly increased because of overburden <br />swell. The applicant indicated that the post-mining topography cannot <br />be absolutely predicted in advance and that the map therefore, an <br />approximation. The CMLRD, to alleviate any uncertainty over <br />post-mining topography and to monitor conformance with performance <br />standards, required the applicant to submit a post-mining topography <br />map annually to the Division. <br />Utah International, Inc. originally submitted the permit application to <br />re-permit the Trapper Mine under the permanent program on November 8, 1982 <br />• (Letters of Concurrence). Trapper Mining, Inc., a wholly owned subsidiary <br />of Utah International, Inc., requested that the permit be issued to <br />Trapper Mining, Inc, instead of Utah International. The :Iotice of <br />Availability of the Technical and Environmental Analysis to be published <br />after the Secretary makes his decision on the MRP will advise the public <br />of the transfer of this application. <br />The applicant requested that the enCire life-of-mine area encompassing <br />10,335 acres be included within the permit area. The applicant has <br />proposed to continue coal extraction from its surface mining operations <br />generally in the western half of the permit area and to conduct the <br />following limited activities in the remaining eastern portion of the <br />permit area: <br />1. Vegetation sampling and monitoring; <br />2. Fish and wildlife sampling, monitoring, and mitigation; <br />3. Ground, surface and alluvial water sampling and monitoring; <br />4. Air sampling and monitoring; <br />5. Maintenance of perimeter markers, signs, and boundaries; <br />6. Activities related to security and safety of the operation; <br />7. Developmental drilling; <br />8. Cultural and historical resource sampling. <br />The advantage to the applicant is that all activities associated with the <br />mine will be under one permit secured by one bond. <br /> <br />