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Preliminary Report for Data Recovery at Sites MK -1-082317 and MK -2-082317 Colowyo Coal Company <br />Figure 6. Site MK -1-082317, Feature 1, Full Excavation, facing southwest. <br />3.1.3.2 Feature 2 <br />Feature 2 is an amorphous soil stain with charcoal flecking and HAIR measuring approximately <br />66 cm north to south by 44 cm east to west (Figures 7 and 8). Actual top of the feature is unknown, <br />but it appears to have been approximately 20 cm below ground surface. The stain is likely the <br />remains of a thermal feature; however it has been significantly impacted. A collapsed rodent <br />burrow cuts into the north central part of the stain distorting the overall shape. The size and <br />location of the feature within the site grid system necessitated one 1 by 1 m unit being established <br />to investigate it. <br />The feature's depth is 12.4 cm below the 205N 200E unit datum. Overall feature shape has been <br />compromised by rodent impacts; however, based on the remaining portions it appears to have be <br />a circular basin. Additional disturbances to the feature include moderate root action also distorting <br />the overall shape. Feature fill consisted of dark stained sediment (10YR2/1, Black); varying dense <br />charcoal flecking and moderately dense HAR. Twenty-one pieces of HAIR were recovered. Most <br />of the HAIR is in the 5 to 3 cm diameter size class (11 pieces (0.25 kg)) and the 10 to 5 cm diameter <br />size class (7 pieces (1.75 kg)). HAIR also occurs in the 3 to 1 diameter size class (2 pieces (0.02 <br />kg)) and the 10 cm diameter size class (1 piece (0.5 kg)). <br />Tetra Tech September 29, 2017 <br />