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Fall 2015 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mininq Areas <br />established to view an area of free-standing sandstone columns (or stacks) above the eastern end <br />of E -seam Longwall Panel El to observe evidence of subsidence. Photographs obtained regularly <br />since spring 2010 have provided no evidence of additional rockfall or column failure at this <br />location. No comparative photographs are therefore presented in this report. <br />3.4 Traverse D -D' <br />This is the first of four named traverses that originate from Traverse C -C'. This traverse starts at <br />the United States Forest Service (USFS) gate immediately east of Deep Creek along Dry Fork <br />Road (C' of Traverse C -C') and proceeds northward to the eastern end of E -seam Longwall <br />Panel E3 (see Maps 1 and 2). This traverse leads to two separate reclaimed pads previously <br />containing MVBs E3-68, E3-72, E3-75, E3-76, and E3-78. No subsidence features were noted <br />along this traverse during the fall 2015 field visit. <br />3.5 Traverse E -E' <br />This traverse originates along the north side of Dry Fork Road and continues northward across the <br />eastern mined portion of E -seam Longwall Panels E3, E4, and E5. This traverse terminates at <br />an MVB pad containing E3-64/65 above mined E -seam Longwall Panel E3. <br />This traverse contains several side tracks to other MVB pads including E3-59/63 (above mined E - <br />seam Longwall Panel E3), E4-1/2/3, E4-4, and E4-5/6 (above mined E -seam Longwall Panel E4) <br />and E5-5 and E5-6/7 (above mined E -seam Longwall Panel E-5). Most of the MVB pads above <br />E -seam Longwall Panels E3 and E4 had been reclaimed as of our fall 2015 field visit. The MVB <br />pad for E4-1/2/3 was undergoing reclamation and the well casings for EE4-5/6 were being cut off <br />below grade and filled with grout at the time of our fall 2015 field visit. MVB pads above E -seam <br />Longwall Panel E5 were still in place and included (E5-5 and E5-6/7). No subsidence -related <br />features were observed on these pads. <br />3.6 Traverse F -F' <br />This traverse originates along the south side of the Dry Fork Road (Traverse C -C) and proceeds <br />southeastward parallel to the Dry Fork for approximately 4,000 feet and then southward up Poison <br />Gulch (drainage east of Deer Creek). This traverse crosses mined portions of E -seam Longwall <br />831-032.797 Wright Water Engineers, Inc. Page 6 <br />March 2016 <br />