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Preliminary Report for Data Recovery at Sites MK -1-082317 and MK -2-082317 Colowyo Coal Company <br />3.2.3.6 Feature 8 <br />Feature 8 is semi -circular dark stained sediment with charcoal flecking and HAR measuring <br />approximately 48 cm north to south by 38 cm east to west (Figures 24 and 25). Actual top of the <br />feature is unknown. However, the feature appears to be approximately 15 cm below ground <br />surface. The size and location of the feature within the site grid system necessitated one 1 by 1 <br />m unit being established to investigate it. <br />The feature's depth below the mechanically exposed surface is 5 cm below the 174N 200E unit <br />datum. Overall feature shape appears to be roughly circular in planview with a lenticular profile. <br />Rooting and burrowing insects have caused minor distortion of the feature boundaries. Feature <br />fill consisted of dark stained sediment (10YR3/1, Very Dark Gray) with sparse charcoal flecking. <br />Of the HAR, one piece is 10 cm diameter size class (0.8 kg) and one in the 10 to 5 cm diameter <br />size class (0.08 kg). The sandstone HAR is blackened, angular, fractured pieces. <br />Figure 24. Site MK -2-082317, Feature 8, Pre -Excavation, facing west. <br />Tetra Tech September 29, 2017 23 <br />