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West Elk Mine 2015 Surface Water and Groundwater Quantity and Quality Data Summary 4 <br />2.1 Surface Water Monitoring Program <br />The surface water monitoring program for the permit area includes 23 stream stations comprised <br />of 10 sites with continuous recording devices and 13 sites where flow is recorded <br />instantaneously. A discussion of the surface water stations on the major drainages and the <br />tributaries to these drainages is presented from upstream to downstream areas, and a map <br />showing the location of the stations can be found in the 2014 Annual Hydrology Report <br />(HydroGeo, 2015). A summary of the surface water monitoring program details is presented in <br />Table 3. <br />In September 2007 eight temperature data loggers were installed and deployed in Sylvester <br />Gulch and in the North Fork, in order to monitor the effects of mine discharge from Sylvester <br />Gulch on the water temperature of the North Fork. Details of the temperature monitoring <br />program can be found in the 2014 Annual Hydrology Report (HydroGeo, 2015), and a summary <br />of the temperature monitoring locations is presented in Table 4. <br />June 2016 HydroGeo, Inc. <br />