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South Permit Boundary <br />Bowie #2 Mine <br />Paonla, Colorado <br />PROJECT NO. 24004 <br />Figure 3 -Site location, subject slope, looking northwest <br />~J <br />We did not note any portion of the slope which showed evidence of past rockfall <br />events. The outcropping sandstone unit shows some evidence of potential future <br />rockfall, although the frequency of rockfall from this area is low as evidenced by <br />the existing, undisturbed vegetation. <br />GEOLOGY <br />The geology at and surrounding the site includes the Bowie Shale Member (680 <br />to 1,000 feet thick) and the Paonia Shale Member (560 feet thick) of the Williams <br />Fork Formation, which are major coal producing units of the Upper Cretaceous <br />age Mesaverde Group. Above the mine area is the unnamed, upper Williams <br />Fork Formation, which is 2,000 to 4,000 feet thick and is comprised of cliff <br />forming sandstone and conglomerate, and slope forming siltstone and shale. <br />Geological hazards from these formations include landslide, debris flow and <br />rockfall. <br />a <br />