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[C-21 I <br /> HISTORY <br /> COLORADO <br /> Zach Trujillo <br /> Environmental Protection Specialist <br /> Colorado Division Reclamation,Mining and Safety <br /> 1313 Sherman St, Rm 215 <br /> Denver, Colorado 80203 <br /> Re: Colowyo Coal Mine (Permit No. C-1981-019), Minor No. 229 (MR-229), MR-229—Exhibit 5, Item <br /> 3, Collom Topsoil Removal(HC 467752) <br /> Dear Mr. Trujillo: <br /> We have completed our review of supplemental materials provided by Tony Tennyson, Senior <br /> Environmental Engineer,Tri-State Generation and Transmission Association, Inc. on April 19, 2021 <br /> including the following reports: <br /> 1. Cultural Resource Site Assessments for Colowyo Coal Company L.P.'s, Collom Expansion <br /> Project,Moffat County, Colorado; <br /> 2. Data Recovery Results Report for Sites 5MF.8393, 5MF.8394, and 5MF8395 as part of Colowyo <br /> Coal Company's Collom Expansion Project,Moffat County, Colorado; <br /> 3. Data Recovery Results Report for Site 5MF.8490 as part of Colowyo Coal Company's Collom <br /> Expansion Project,Moffat County, Colorado; and <br /> 4. Cultural Resource Site Assessments in 2019 for Colowyo Company Collom Project,Moffat <br /> County, Colorado. <br /> We find the referenced documentation acceptable as we do Tri-State's request to relinquish <br /> archaeological monitoring as required by Exhibit 5, Item 3. Additionally,we find the revisions to this <br /> exhibit as presented by your January 2021 correspondence satisfactory as written. <br /> Should unidentified archaeological resources be discovered in the course of the project,work must be <br /> interrupted until the resources have been evaluated in terms of the National Register eligibility criteria(36 <br /> CFR 60.4) in consultation with our office pursuant to 36 CFR 800.13. Also, should the consulted-upon <br /> scope of the work change please contact our office for continued consultation under 36 CFR part 800. <br /> We respectfully remind all parties that timely notification and consultation is a critical step that we <br /> anticipate will occur in the future. <br /> We thank you for the opportunity to comment. If we may be of further assistance,please contact Mark <br /> Tobias, Intergovernmental Services Manager, at(303) 866-4674 or mark.tobiaskstate.co.us. <br /> Sincerely, <br /> Dr. Holly Kathryn r n Norton rto n Digitally signed by Dr. Holly Kathryn Norton <br /> Y Date: 2021.05.04 17:44:13 -06'00' <br /> Steve Turner,AIA <br /> State Historic Preservation Officer <br /> ST/mt <br /> cc. Tony Tennyson, Senior Environmental Engineer,Tri-State Generation and Transmission <br /> Association, Inc. <br />