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III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl of Nalu ral Resources II~~~ <br />l i l } Sherman 51., Room ? I $ <br />Denver, Colorado RO203 <br />Phone. (Al}I BGL-}5(+7 <br />FAX' 130]1 R32 RIOG <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />To: Dan Mathews RoY Romer <br />~'yl~,~ Governor <br />From: Barbara Pavlikv~' Ia mesS Loihhrad <br />E.eculive Duec^n <br />Michael B Lnnl; <br />Date: December 4, 1995 o~~i,~n„u~+e,~„r <br />Re: Annual Hydrology Report <br />Roadside Portals Mine (C-81-041) <br />I have reviewed the surface water portion of the above referenced <br />AHR and have the following comments: <br />1) The operator has calculated a conductivity - tons/a.f. <br />ratio in order to determine salt loading to the Colorado <br />River. However, the calculations for determining this <br />ratio were not provided. The Division needs this <br />information in order to evaluate whether the operator's <br />estimate of salt loading is accurate. Please have the <br />operator submit the calculations for the ratio. <br />2) The page numbering system for the data pages is extremely <br />confusing and makes it difficult to quickly locate <br />information. The Division suggests a more standard <br />format of page numbering to facilitate review of future <br />reports (e.g., numbers). <br />3) Table M94-2 lacks units which obstructs an evaluation of <br />this information. It is also unclear, at first glance, <br />whether the "Mass Avg" indicates the average of the <br />conductivity of each location or whether it indicates <br />something else. The operator should clarify this table. <br />If you or the operator have any questions, please call. <br />cc: Larry Routten <br />