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Spring 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas <br />spring) approximately 0.75 miles to a `T' intersection with another road south of the headgate <br />entries of unmined E -seam Longwall Panel E7 (see Map 1). Two additional stock ponds (P74 and <br />P93) with earthen embankments are located lower in the drainage. Both of these ponds are also <br />fed by nearby springs. <br />This traverse is located above the E -South Mains and the western ends of mined E -seam Longwall <br />Panels E3, E4, and E5, as well as unmined E -seam Longwall Panels E6 and E7. Previous <br />observations of subsidence cracks were described on the MVB E5-20 pad beginning in the Fall <br />2015 Subsidence Report with follow-up observation discussed in both 2016 reports. The <br />subsidence cracks on and near the pad are well healed and becoming difficult to identify. <br />Where this Deer Creek Road crosses the USFS gate a short distance southwest of the two stock <br />watering troughs, several small earthen ridges and valleys were observed on and adjacent to the <br />road (Location 1). These features were not tracks left by previous vehicles during wet conditions, <br />but rather appeared to be sections of soil and vegetation that had been shoved randomly together <br />creating uplifted and down -dropped areas over a linear distance of approximately 100 feet (roughly <br />equal distance on each side of the gate). Additional details about these observed features are <br />discussed in Section 4.2.1. <br />No other subsidence -related features were observed along this traverse during our spring 2017 <br />field visit. <br />4.2.1 Location 1 <br />Location 1 is an area of approximately 100 feet in length along Traverse B -B' at the USFS gate. <br />At this location, sections of soil and vegetation appeared to have been randomly shoved together <br />reminiscent of small thrust faults in which one section is thrust into and over the other creating <br />uplifted and down -dropped areas. Upon first inspection, the area appeared to be heavily rutted <br />from a large vehicle that had driven through when the area was wet (Figure 1). However, the slope <br />of the road leading up to the gate from the north would not have allowed such features to have <br />been created. South of the gate, some features resembled the surface expression of tunneling by a <br />ground hog or shallow burrowing mammal (Figure 2). This was discounted given the height of <br />some features and the lack of such evidence elsewhere. Therefore, the features were considered <br />831-032.799 Wright Water Engineers, Inc. Page 10 <br />August 2017 <br />