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2023 Cultural Resource Site Assessments for Collom Expansion Project Colowyo <br />Tetra Tech June 2023 24 <br />For Official Use Only: Disclosure of Site Locations Prohibited (43 CFR 7.18) <br />was found. The mano is oval with two well ground faces and shaped edges measuring 7.9 cm by <br />10 cm by 2.5 cm. <br />In 2019, Tetra Tech revisited the site as part of the second round of assessments. The condition <br />of the site had not changed since the 2015 revisit. The mano identified in 2015 was relocated <br />along with one grey chert utilized flake. No other recorded tools or projectile points were relocated. <br />The site had not been affected by mining activities. <br />In 2023, Tetra Tech revisited the site as part of the third round of assessments (Figure 16). The <br />condition of the site has not changed since the 2015 revisit. The mano identified in 2015 and <br />relocated in 2019 was relocated during the revisit. No other 2005 recorded tools or projectile <br />points were relocated. Tetra Tech recommends that mining activities continue to avoid the site <br />until further assessment is completed to fully evaluated the site’s NRHP eligibility. <br />NRHP Status and Condition Assessment <br />In 2005 TRC recommended Site 5MF.6088 as needing additional data to determine its eligibility <br />for inclusion on the NRHP. TRC conducted two auger tests during recordation but did not <br />encounter any evidence of a subsurface cultural component(s). However, more intensive testing <br />was recommended to confirm the presence or absence of any component(s). Tetra Tech agrees <br />with this recommendation. The 2015, 2019, and 2023 revisits observed no significant changes or <br />impacts to the site. The site should continue to be avoided pending additional subsurface testing <br />to determine whether unobserved subsurface cultural material is indeed present at the site. <br /> <br />Figure 16. Site 5MF.6088 overview, facing north. Taken by E. Shikrallah on 5/16/2023. <br />