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~• APPENDIX III-8d <br />EAGLE N0. 5 MINE - 2 I~JEST EXTENSION <br />Round Bottom Alluvium <br />The soils of the Round Bottom alluvium are made up of the following: <br />Havri fine sandy loam, Absher fine sandy loam, Busby sandy loam, Glendive <br />loam, Spicerton variant very fine sandy loam. Typically, the topsoil is <br />60 inches deep and overlies gravels which vary in depth. It is assumed <br />that the Round Bottom alluvium is similar both in structure and function, <br />to the Williams Fork and Big Bottom alluvia. The reader is referred to <br />• Section III fora decision of these alluvial bodies. <br />C ~. <br />The Round Bottom's function is flood irrigation. The area is flooded <br />during the growing season to augment the rainfall received in the area. <br />The western extension of the No. 5 Mine will not impact the Round Bottom <br />alluvium or disrupt the essential function of the valley floor. The two <br />units effected by the mine dewatering, the F coal seam .and the Middle <br />Sandstone, do not subcrop under the Round Bottom alluvium, and therefore, <br />will not draw any water from it. Plate III-le (confidential) confirms <br />this statement. <br />Spring and Seep Survey <br />• The spring and seep survey of the Bell Rock Gulch drainage was redone <br />~ on October 29, 1983 by Mr. Steve Korte, who is a consulting geologist. <br />(RE!'. 11/21/83) <br />