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units of the Barren Member of the Mesaverde Formation. Numerous MDW drill pads are <br />accessible from this traverse including E1 -15, E1 -19, E1 -26.5, E1 -30.5, E1 -34, E1 -38, E2 -38, <br />E1-42, E2 -42, E2 -44.5, E1-45, and E2 -47.5. Each of these sites was visited during the spring <br />2012 field activities except E1-19 which has been reclaimed (this was also true for a portion of <br />the MDW E1-15 and E1-26.5 pads). E -seam longwall mining had already occurred beneath each <br />of these MDW pads. No changes were observed along this traverse or at the various MDW drill <br />pads. <br />4.4 Traverse K -K' <br />Spring 2012 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />This traverse follows Dry Fork Road from Monument Dam (Minnesota Reservoir) eastward to <br />just beyond the point where the road crosses Deep Creek (see Maps 2 and 4). Portions of this <br />traverse are above mined E -seam Longwall Panel El, E2, and E3 as well as unmined portions of <br />E -seam Longwall Panels E4 through E6. The extreme western end of this traverse is adjacent to <br />Minnesota Reservoir and well outside the proposed E -seam mining influences of Longwall <br />Panels El through E8. <br />Thick soil and colluvium derived primarily from the Wasatch Formation is observed along this <br />traverse with E -seam overburden depths ranging from 400 to 1,200 feet. The estimated thickness <br />of the surficial material ranges from 75 to 250 feet. <br />Photographic Observation Point 12 is located along this traverse near where the Dry Fork Road <br />crosses Dry Fork. This photographic location was established to view an area of free - standing <br />sandstone columns (or stacks) above the eastern end of E -seam Longwall Panel El to observe <br />evidence of subsidence. A comparison between photographs taken in fall 2009 and spring 2010 <br />revealed that one of the rock columns had collapsed shortly after mining beneath the area. <br />Photographs obtained since spring 2010 of this same rock outcrop area reveal that there has been <br />no additional rockfall or column collapse. <br />During the spring 2011 field visit, Photographic Observation Point 12 was also the point of <br />observed subsidence cracks in the road resulting from mining of the western end of E -seam <br />831 - 032.794 <br />November 2012 <br />Wright Water Engineers, Inc. Page 10 <br />