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<br />Colorado Dept. of Health. August 2005. "Regulation No. 31, The Basic <br />Standards and Methodologies for Surface Water" <br />Colorado Dept. of Health. December 2005. "Regulation No. 33, <br />Classification and Numeric Standards for the Upper Colorado River Basin" <br />Colorado Dept. of Health. November 2004. "Regulation No. 41, The Basic <br />Standards for Ground Water" <br />EPA. 1976. "Quality Criteria for Water" <br />Hem, John D. 1969. "Study and Interpretation of the Chemical <br />Characteristics of Natural Water" USGS Water Supply Paper 2254, Third <br />Edition <br /> <br /> <br />16 <br />