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<br />305 Denver Avenue – Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 <br /> <br /> <br /> <br />May 9, 2020 <br /> <br /> <br />Mr. Eric Scott <br />Environmental Protection Specialist <br />State of Colorado <br />Division of Reclamation, Mining, & Safety <br />1313 Sherman Street – Room 215 <br />Denver, CO 80203 <br /> <br /> <br />RE: Broken Arrow Investments, LLC – Derr Pit – Technical Revision No. 4 Adequacy Review <br />Response File No. M-2008-017 <br /> <br /> <br />Dear Mr. Scott, <br /> <br />On behalf of Broken Arrow Investments, LLC we are providing additional cross sections for the slope <br />stability analysis as requested. <br /> <br />Broken Arrow Investments, LLC appreciates your consideration of additional information and looks <br />forward to your response. <br /> <br />Please feel free to contact me with any questions or comments. <br /> <br />Sincerely, <br /> <br /> <br /> <br /> <br />J.C. York, P.E. <br />J&T Consulting, Inc. <br /> <br /> <br />Attachments: <br /> <br /> Updated Mining Plan Exhibits <br /> Slope Stability Analysis Cross Sections <br /> <br /> <br />cc: Broken Arrow Investments, LLC <br /> File