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Gloyn, R.W., C. D. Morgan, D. B. Talbot, R.E. Blackett, B. T. Tripp, Mike Lowe; 1995. <br /> Mineral, Energy and Ground-water Resources of San Juan County, Utah. Utah <br /> Geological Survey, Utah Department of Natural Resources, Special Study 86. 39 pp. <br /> Gonzales, D, 2011, Rreview of Surface and Groundwater Conditions, May Day-Idaho <br /> Property, La Plata County, Colorado <br /> Hagar, F, 2011, Conceptual Hydrogeologic Model, May Day Mine-La Plata County <br /> Kirkham, Robert M., David A. Gonzales, Christopher Poitras, Kendra Remley, and <br /> Douglas Allen, Geologic Map of the Hesperus Quadrangle, La Plata and Montezuma <br /> Counties, Colorado, Colorado Geological Survey, Denver, Colorado. <br /> Levings, G.W, Kernodle, J.M. and Thorn, C.R. (1996)Summary of the San Juan <br /> Structural Basin Regional Aquifer-System Analysis, New Mexico, Colorado, Arizona and <br /> Utah. U.S. Geological Survey Water-Resources Investigation Report 95-4188. <br /> Linsley, Ray, K. and Joseph B. Franzini. 1972. Water-Resources Engineering. McGraw- <br /> Hill, Inc. New York. 690 pp. <br /> Topper, R, Spray, K.L., Bellis, W.H., Hamilton, J.L. and Barkmann, P.E. (2003) <br /> Groundwater Water Atlas of Colorado. Colorado Geological Survey Special Publication <br /> 53. <br /> b. Regulatory <br /> CDPHE <br /> Colorado Department of Public Health and the Environment, Regulation 31 The Basic <br /> Standards and Methodologies for Surface Water(5CCR 1002-31). <br /> Colorado Department of Public Health and the Environment, Regulation 34 Stream <br /> Classifications and Water Quality Standards. <br /> Colorado Department of Public Health and the Environment, Regulation 41 The Basic <br /> Standards for Ground Water(5CCR 1002-41). <br /> Colorado Department of Public Health and the Environment-Stormwater Permit <br /> COR0300000. <br /> Colorado Department of Public Health and the Environment-Commerce and Industry <br /> Permitting. <br /> County <br /> La Plata County Land Use Codes <br /> Colorado Division of Reclamation Mining and Safety <br /> May Day Idaho Mine Complex <br /> M-1981-185 <br /> January 19, 2017 <br /> Page I - 16- <br />