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iii-iiiii-iniiiiii <br />S 1ATE OF COLOre4D0 Rif HAgn D. l/MM. ~nv¢~n n. <br />DEPARTMENT OF NATURAL RESOURCES <br />D. Monte Pascoe, Executive Director <br />MIlVED LAND RECLAMATION <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. (303) 866-3567 <br />David C. Shelton <br />Director <br />j. <br />~e' <br />~. <br />December 6, 1982 <br />T0: Jim Herron cJ' ~ <br />FROM: Roy L. Cox <br />RE: Completeness Review for Seneca II-W <br />File No. C-057-82 <br />I have completed my completeness review of Seneca II-W. In this review, I have <br />found only one completeness inadequacy. <br />Rule 2.04.6(1)(a) - The geologic cross-sections (Exhibits 6~XrR through 6-GX-9) <br />are incomplete. •These cross-sections only show the coal seams to be mined. <br />No attempt was made to correlate and draft overburden and underburden strata on <br />the cross-sections. The locations of sandstone, shale and siltstone units <br />within the overburden and underburden are important in assessing the movement <br />of ground water in these strata. Therefore, the applicant should redraft and <br />resubmit geologic cross-sections of the permit and adjacent areas. The geologic <br />cross-sections should include the location of lithologic strata. The applicant <br />should also include within the geologic description the prominent trend of <br />lenticular sandstone units in the overlying and underlying strata. The submittal <br />of the cross-sections and geologic description are required to satisfy the <br />permit requirements under Rule 2.04.6(1)(a), which requires that the geologic <br />cross-sections of the permit area describe the nature, depth and thickness of <br />each stratum down to and including the stratum below the lowest coal seam to <br />be mined. <br />All other geology sections are complete and adequate. <br />The ground and surface water sections are complete for the mine site. However, <br />there are numerous inadequacies. The most glaring inadequacies and the analyses <br />presented on water balance and on potential ground water impacts of mining. <br />Also, the spring survey is inadequate to assess seasonal fluctuations in the <br />quantity and quality of spring flows. These inadequacies will be discussed in <br />more detail in the future technical adequacy review. <br />/mt <br />~r <br />