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Spring 2014 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas (E -Seam) <br />Figure 18. Spring 2014 view looking north at a slump on the outside edge of the Traverse 1 -1 road <br />(Location 7) where E -seam overburden depth is between 450 and 500 feet. <br />4.14.2 Location 8 <br />Several subsidence - related features were observed on the E4 -16 MDW pad. One crack was <br />observed over a relatively continuous distance of 150 feet both on and off the eastern edge of the <br />pad (Figures 19 and 20). A sandstone lens was observed at a depth of about 10 inches below the <br />pad surface at one location along this crack. Failure of this brittle unit appears to be the reason for <br />the relatively continuous crack with a N5 °E orientation. One location along this feature had a <br />measured depth of approximately 10 feet with a crack width of 2 inches. Several smaller sub - <br />parallel cracks were observed to merge with the larger crack at the south edge of the pad. <br />831 - 032.796 Wright Water Engineers, Inc. Page 30 <br />September 2014 <br />