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�.ses� 4 <br />1 West Elk Mine 2016 Surface Water and Groundwater Quantity and Quality Data Summary 2 <br />Table 1. Baseline and Routine Monitoring Frequencies <br />Routine Monitoring <br />Baseline Monitoring <br />Rising Limb <br />April 3 to May 13 <br />Peak Flow <br />April 21 to June 26 <br />Low Flow <br />July 10 to October 8 <br />Month <br />Flow / Level <br />Field <br />Parameters <br />Laboratory <br />Analysis <br />January <br />February <br />March <br />April <br />X <br />X <br />X <br />M <br />May <br />X <br />X <br />X <br />June <br />X <br />X <br />X <br />July <br />X <br />X <br />X <br />August <br />X <br />X <br />X <br />September <br />X <br />X <br />X <br />October <br />November <br />December <br />Adapted from CDRMS (2006) <br />After monitoring sites have been monitored for five years (including approximately one year of <br />baseline monitoring), the analytical parameter suite list is typically reduced and samples are <br />submitted for laboratory analysis of total suspended solids (TSS), total dissolved solids (TDS), <br />EC, pH, dissolved iron, and total iron. Field parameters (pH, EC, temperature, and flow or water <br />level) are also recorded. <br />The Upper and Lower North Fork and Middle Sylvester Gulch monitoring sites have expanded <br />analytical parameter suite lists, in order to provide data for the on-going characterization of the <br />North Fork of the Gunnison River (North Fork). The North Fork and Middle Sylvester Gulch <br />lab parameters include those listed in Table 2, plus chromium, nickel, silver (total), cyanide <br />(total), iron (total recoverable), alkalinity (total CaCOA bicarbonate, carbonate, hydroxide, <br />nitrogen (ammonia), ortho-phosphorus (dissolved), and sodium adsorption ratio (SAR). <br />June 2017 HydroGeo, Inc. <br />