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West Elk Mine 2004 Annual Hydrology Report 22 <br />Laboratory of Steamboat Springs Colorado. Flows aze measured using Parshall flumes and <br />continuous flow data are collected using Stevens Type F recorders and data loggers and Global <br />Water pressure transducers and data loggers. Field water quality and lab samples are collected at a <br />non-aerated flowing section of streams with minimum turbidity. Field measurements are taken <br />with a Hydac multimeter that has been calibrated with standard buffer solutions. All sampling <br />equipment is rinsed with distilled water and sample water prior to testing or sample collection. <br />Water samples for lab analysis aze collected in pre-fixed sample bottles provided by the laboratory. <br />Sample bottles are sealed, labeled, placed on ice, and shipped to the lab in coolers for analysis. <br />Chain of custody forms are completed for all samples sent to the lab for analysis. <br />Spring and seep monitoring follows the same protocols as described for surface water monitoring <br />described above, with the exception of flow measurement methodology. For springs and seeps, the <br />flow channel is dug to facilitate positioning a measuring bucket. Flow is measured by the timed <br />volumetric method. Flow rate is determined by recording the time required to fill a container of <br />known volume. This procedure is repeated several times and an average flow rate is calculated. <br />The sampling of ground water wells includes recording water level measurements, recording field <br />parameters, and collecting laboratory samples for analysis. The static water level in the well is <br />• measured to the nearest 0.1-inch, using a Solinst or Heron brand electronic well sounder. <br />Following water level measurement, field parameters are recorded and lab samples are collected, as <br />described above. The wells at the Project are not bailed prior to sampling because of their very <br />slow recharge rates. Rather than bailing several volumes of water, samples are collected using a <br />point source bailer. A point source bailer can be lowered to a selected interval in the well to collect <br />an undisturbed sample from that zone. <br />Underdrain and mine inflow monitoring includes measuring and recording flow, recording field <br />parameters, and collecting laboratory samples for analysis. Flow rates are measured using the <br />timed volumetric method, described above for spring and seeps. The protocols for recording field <br />water quality and collecting lab samples are the same as described above for surface water <br />monitoring. <br />4.0 MINE WATER MANAGEMENT ACTIVITIES <br />The mine water management activities or water balance pertain to the water flows into and out of <br />the mine and include fresh water intake (appropriated diversions) from the North Fork, mine <br />discharge of treated sanitary wastewater, sedimentation ponds, and mine water inflow. The <br />Angus[ 2005 HydroGeo, Inc. <br />