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2023 Cultural Resource Site Assessments for Collom Expansion Project Colowyo <br />Tetra Tech June 2023 29 <br />For Official Use Only: Disclosure of Site Locations Prohibited (43 CFR 7.18) <br />very dense in 2019 throughout the site, completely obscuring the ground surface. Artifact <br />concentrations and Feature 4 could not be relocated. Features 1, 2, 3, and 5 were in similar <br />condition as reported in the 2015 assessment. There were no observable impacts from mining <br />activity on the site. Tetra Tech recommended that mining activities continue to avoid the area until <br />further assessment. <br />In 2023, Tetra Tech revisited the site as closely as possible as part of the third round of <br />assessments (Figure 20). The wash was full of swift moving spring runoff and no bridges or other <br />means of crossing the wash were available during the time of revisit. Tetra Tech was not able to <br />revisit portions of the site on the east side of the wash. From Tetra Tech’s vantage point on the <br />west side of the wash, the site appears to be in the same condition as documented in 2019. There <br />are no observable impacts from mining activity on the site. Tetra Tech recommends that mining <br />activities continue to avoid the area until further assessment. <br /> <br />Figure 20. Site 5MF.6128 overview, facing east. Taken by E. Shikrallah on 5/16/2023. <br />NRHP Status and Condition Assessment <br />In 2005 TRC recommended Site 5MF.6128 as eligible for listing on the NRHP under Criteria A <br />and B. The site is associated with the large historic-era settlement influx into northwestern <br />Colorado. The homestead owner, Edwin Collom, was one of the earliest settlers in the area and <br />argued to be of regional historical significance. Tetra Tech agrees with this recommendation. The <br />overall condition of the site is unchanged since 2005. Due to high water, Tetra Tech could not <br />access the entire site during the 2023 revisit; however, from accessible vantage points not <br />changes were observed to the site. The site should continue to be avoided by any proposed <br />mining-related activities. <br />