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West Elk Mine <br />Surface and underground protection measures for streams aze presented in Section 2.05.6(6). <br />Augmentation and other mitigation measures for surface water rights that may be impacted aze <br />presented earlier in this section. <br />S rin s <br />Baseline data for springs are also being obtained as presented in Section 2.04.7, and more <br />specifically, on Table 4 Exhibit 71. The spring resources that are monitored or proposed for <br />monitoring aze shown on Map 1 of Exhibit 71. <br />Monitoring to determine the hydrologic consequences to springs is by seasonal measurements (three <br />times per year to correspond to the start of spring runoff, the peak spring runoff, and the fall low <br />flow) aze taken of spring flow, pH, conductivity, and temperature. Annually, during the second <br />sampling period, springs are additionally monitored for laboratory analyses of total dissolved solids <br />(TDS), total suspended solids (TSS), calcium, magnesium, sodium, SAR, hardness, bicarbonate, <br />chloride, nitrate/nitrite, phosphate (POi s as P), sulfate, iron (total and dissolved), manganese (total <br />and dissolved), aluminum (dissolved), arsenic (total recoverable), cadmium, copper, lead, mercury <br />(total recoverable}, molybdenum, selenium (total recoverable), and zinc. All parameters aze <br />analyzed for their dissolved form unless stated otherwise, <br />A seasonal, rather than quarterly or semi-annual spring flow and water quality monitoring schedule <br />was instituted for a variety of reasons. The primary reason for selecting seasonal sampling in the <br />case of spring flows, these are the only periods of measurable flow. Most of the springs are <br />ephemeral or internuttent at best, except in the wettest years. The spring flow baseline data, <br />summarized graphically in the Annual Hydrology Report, cleazly indicate that there is no reason to <br />attempt to sample these locations in the dead of winter. The adverse conditions encountered in the <br />remote areas of West Elk Mine lease azea severely hamper sampling procedures and influence the <br />collection of meaningful data. As a result, by restricting sampling to the periods of flow and <br />ensuring sample integrity, MCC will be able to provide meaningfixl data to the agency while <br />reducing the costs associated with collecting unnecessary or data that is not meaningful. <br />MCC has selected the water quality pazameters above and in Table 4 of Exhibit 71 for routine <br />measurement because they aze most commonly associated with coal mining impact on water <br />quality. Annual, full-suite monitoring will allow MCC to identify possible mining-induced changes <br />in water quality. Monitoring data, along with a discussion of any impacts observed or projected, <br />will be provided in an Annual Hydrology Report to be submitted by Apri130 each year. <br />Surface and underground protection measures for springs aze presented in Section 2.05.6(6). <br />Augmentation and other mitigation measures for surface water rights that may be impacted are <br />presented eazlier in this section. <br />i <br />LOS-295 RevisedJuae 2005 PRIG; Rev. March 2003; Rev. May 1003PR10 <br />