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Fall 2015 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mininq Areas <br />3.0 TRAVERSES AND OBSERVATIONS IN THE SOD AND DRY FORK MINING <br />AREAS <br />A detailed discussion of observations associated with Traverses A -A' through J -J' (including J -Ji' <br />and J -J2') is provided in this section (see Maps 1 and 2). Several of the photographs obtained <br />during the fall 2015 field visit are included as figures in the text of this report. Where these images <br />have notable differences from previous photographs, the older image has been included for <br />comparison purposes. To reduce the overall size of this document, narrative text and photographs <br />for traverses where there have been no observable change are generally excluded. <br />Map 1 shows the outline of E -seam mine workings along with surface topography and other <br />surface features (including the named traverses). Map 2 shows the same area and detail as Map 1 <br />(minus traverses) along with recently -active landslide and rockfall areas as delineated from aerial <br />photo research and field observations. <br />3.1 Traverses A -A' and B -B' <br />These traverses overlie portions of mined E -seam Longwall Panels E1, E2, and E3. All but one <br />of the methane ventilation boreholes (MVBs) accessed via these traverses (E3-51) have been <br />reclaimed. Note that in this report, a designation similar to E2-51/52/54 indicates one MVB pad <br />containing three drill holes. As denoted on Map 1, the surface and termination point of each drill <br />hole is shown by a small and large filled green circle, respectively, that are connected by a straight <br />green line. <br />No subsidence -related features were observed along either of these traverses during our fall 2015 <br />field visit. <br />3.2 Traverse C -C' <br />This traverse follows the Dry Fork Road from Monument Dam (Minnesota Reservoir) eastward to <br />the road crossing of Deep Creek (see Maps 1 and 2). Several portions of this traverse parallel the <br />Dry Fork, itself. Portions of this traverse are above mined E -seam Longwall Panels E1 through <br />E5 as well as unmined portions of E -seam Longwall Panel E6. The western end of this traverse is <br />831-032.797 Wright Water Engineers, Inc. Page 4 <br />March 2016 <br />