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Tony Tennyson <br />Page 2 <br />November 30, 2020 <br />of this parameter noted in the Colowyo November 24 letter is appreciated. This type of <br />discussion is the ideal form of additional analysis that will provide a more thorough <br />review of future AHRs. It is noted that Tri-State plans to install additional stormwater <br />management BMPs along the Collom Haul Road to protect the water quality in this <br />creek. <br />• Regarding the analytical method used to determine concentrations of dissolved lead, the <br />Division notes that Tri-State plans to use a more robust method (with a lower detection <br />limit) in the future. <br />Thank you for addressing all of the items in the initial 2018 and 2019 review. <br />Sincerely, <br />V4- / . <br />Robert D. Zuber, P.E. <br />Environmental Protection Specialist II <br />Cc: Jason Musick and Zach Trujillo, Division of Reclamation, Mining and Safety <br />