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buried soils or significant layering. A screening crew followed and screened all sediments with <br />1/4 -inch mesh hardware cloth. All auger probes were marked with a GPS capable of sub -meter <br />accuracy, and all auger probes were backfilled the same day. <br />All 162 auger probes on the proposed drill pad and along the access road were negative <br />for cultural materials. No charcoal staining or fire -cracked rocks were observed. Further, rock <br />inclusions were nearly non-existent within the majority of the probes. Sediments largely <br />consisted of moderately slopewashed residual fine-grained clay with little variation, particularly <br />on the drill pad area. Sediments along the access road varied somewhat as it crossed a drainage <br />and traversed a bench, although clayey sediments continued throughout. <br />No previously recorded sites are located within the current project area (irrigation ditch <br />site 5RT921 was revisited in the field and found to be 30 m to the north at its closest point), and <br />subsurface testing did not reveal the presence of any cultural materials. Thus, Metcalf <br />recommends a finding of no historic properties affected as. <br />Please let us know if you have any questions or would like additional information <br />Sincerely, <br />Garrett Williams <br />Staff Archaeologist <br />Kim Kintz <br />Principal Investigator <br />Metcalf Archaeological Consultants, Inc. <br />cc: Jerry Nettleton, Twentymile Coal Company <br />References Cited <br />McKibbin, Anne <br />2015 Work Plan for Site Discovery at Twentymile Coal Company's proposed 13L Grout <br />Borehole, Section 20, T5N R86 W, Routt County, Colorado. On file at the Office of <br />Archaeology and Historic Preservation, Denver, Colorado. <br />