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Spring 2016 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mininq Areas <br />4.3 Traverse C -C' <br />Traverse C -C' originates in the Deer Creek drainage adjacent to the lower stock pond (P74) and <br />proceeds eastward, trending north and then south, over mined E -seam Longwall Panels E2, E3, <br />E4, and E5 (see Map 1). E -seam overburden depths along this traverse vary from 450 feet in the <br />Deer Creek drainage to more than 900 feet over mined E -seam Longwall Panel E5. <br />Numerous MVB pads have been historically accessible from this traverse including E3-6, E3-12, <br />E3-17.5, E3-21, E3-25, E4-15, E4-16, E4-17, and E4-18 over mined E -seam Longwall Panels E3 <br />and E4. Our spring 2016 field visit found the pads for MVB E3-12, E3-17.5, E3-21, and E4-17 <br />had all been reclaimed. <br />Previous reported observations along this traverse included a small subsidence crack in the cut <br />slope at the beginning of this traverse, a slump on the downslope side of the drill road above the <br />Deer Creek valley, subsidence cracks on the E4-16 MVB pad, and cracks in the road near, and on, <br />the E5-17 MVB pad. No new subsidence features were observed at these locations. Of note was <br />the inability to identify the small crack in the cut slope at the beginning of the traverse and the <br />inability to identify the cracks previously observed in the road near the E5-17 MVB pad. All other <br />previously observed subsidence features had continued presence but exhibited continued signs of <br />weathering and healing. <br />Photograph from east- and west -facing overview locations were obtained as in previous visits. <br />Photographic comparisons to previous images found no substantive differences. <br />4.4 Traverse D -D' <br />This traverse originates along the south side of the Dry Fork Road (Traverse A -A') and proceeds <br />southward up Poison Gulch (drainage east of Deer Creek) to a location above the headgate entries <br />above unmined E -seam Longwall Panel E7. This traverse crosses mined portions of E -seam <br />Longwall Panels E3, E4, and E5, as well as unmined portions of E -seam Longwall Panels E6 and <br />E7 (see Map 1). The E -seam overburden depth along this traverse varies from slightly less than <br />700 feet to almost 900 feet. <br />831-032.798 Wright Water Engineers, Inc. Page 12 <br />August 2016 <br />