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AME <br />M-2017-049 <br />Correspondence <br />January 11, 2oi8 <br />Warren H. Dean <br />3131 Little Turkey Creek Road <br />Colorado Springs, CO 80926 <br />719-440-1722 <br />warren@rosenbaumdean.com <br />Amy Eschberger <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street <br />Denver, CO 80205 <br />CDRMS Permit Application M-2017-049 <br />Dear Amy, <br />RECEIVED <br />JAN 3 0 2818 <br />DIVISION OF RECLAMATION <br />MINING AND SAFETY <br />This is a formal request related to Transit Mix's work submitted relative to <br />the above Permit Application. I assume you have a copy of the model to <br />review with the other information. <br />Can you please provide the following: <br />Appendix E contains the Modeled Impact Results for the HRR quarry. We <br />would like the actual Visual Modflow model files for the steady state and <br />transient runs used in their impact analysis including any base maps used <br />to construct the model such as geologic, topographic, precipitation and soils <br />maps in formats compatible with Visual Modflow. The purpose of <br />providing the model files is for us to extract model input inadequately <br />explained in the Hydro --Logic report including: <br />• The hydraulic conductivity, specific storage, and specific yield <br />distribution matrixes; <br />• Streambed conductance values (Hydraulic conductivity of <br />streambed (Ksb) and the thickness of the river bottom /m) used in <br />river cells (Figure E-3); <br />• Calibrated hydraulic conductivity distribution; <br />• Drain cell locations and conductance value components (hydraulic <br />conductivity (K) and length (L) <br />