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The operations at Coal Basin neither have nor <br /> • will remove strata overlieing the coal seams to be mined . <br /> d . Near surface geology <br /> The major surface disturbed areas in the <br /> Coal Basin mine permit area are the five mine portals and <br /> their related haul road systems , the preparation plant area , <br /> and the tunnel portal area . (See Table III-D-2) <br /> The No . 1 , 3 , 4 and 5 mine entries have been <br /> made to extract coal from the B bed , which forms the upper <br /> 6 ' -8' of the Coal Basin interval. The Coal Basin interval <br /> overlies the Rollins Sandstone member of the Cretaceous <br /> Mesaverde formation. It is the upper member of the Iles <br /> formation, and the base of the coal-bearing series in Coal <br /> Basin. The Rollins outcrops in a nearly vertical cliff . <br /> The portal area of the No . 1 mine entry is <br /> cut into the Rollins Sandstone member. Since the Rollins is <br /> transitional into the unlieing Mancos Shale formation, which <br /> floors the majority of the basin, the road which connects <br /> the portal area to the preparation plant area traverses <br /> Mancos Shale below the portal area. <br /> The No . 2 Mine entry has been made to extract <br /> coal from the Middle bed , which ranges from 5 ' -20 ' thickness <br /> and overlies the Middle Sandstone member of the Williams <br /> Fork in the Cretaceous Mesaverde formation. The Middle <br /> Sandstone member is nearly identical to the Rollins Sand- <br /> stone member , and outcrops in a , nearly vertical cliff . <br /> 33 <br />