2015-05-11_REPORT - C1996083 - Laserfiche WebLink

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Bowie Resources, LLC Bowie No. 2 Mine 2013 Annual Hydrology Report Revised May 11, 2015 AW -6 Ave 2013 7.2 2739 4200 0.42 0.075 AW -11 Ave Baseline 7.3 553 760 4.93 0.34 AW -11 Ave 2013 7.6 746 1082 0.08 0.24 AW -12 Ave Baseline 7.5 330 567 42.55 0.864 AW -12 Ave 2013 7.4 530 700 1.19 0.03 AW -16 Ave Baseline 7.9 NB 740 NB NB AW -16 Ave 2013 7.4 5770 3416 10.08 1.126 AW -17 Ave Baseline 8.9 185 264 0.117 0.041 AW -17 Ave 2013 7.6 2974 4750 0.18 0.03 NB = No baseline Exceeds Baseline Surface Water Monitoring Stations: PONDS Ponds were sampled for water quality when discharging or inflows /outflows were occurring. Ponds are typically spring -fed or seep -fed and exhibit diffuse non - concentrated areas of inflow. Often the pond outlets present the only point of concentrated flow at which flow measurements and field parameters can be obtained. Where possible, quality measurements are obtained at the pond inlet. Stagnant water in ponds is not sampled since water quality results would show the effects of evaporation and stock use and could not be used to evaluate potential mine affects. Ponds are monitored quarterly. The following information is collected for the ponds; 1; inflow; 2) outflow; and 3) water level below spillway outlet or depth of water in pond measured from the bottom of the pond. Field data collected during the 2013 sampling season is consistent with baseline information provided in the permit application. Surface Water Monitoring Stations: SPRINGS Fifty nine springs were monitored during the 2013 monitoring season in accordance with the Hydrologic Monitoring Plan. Five of the springs have not be monitored since July 2007 because a slide made them inaccessible. This plan indicates that identified springs will be inspected quarterly for field parameters with full suite laboratory parameters required on springs with flows greater than five (5) gallons per minute. During the construction phase of the mine, four (4) springs (S -6, S -7, S -9 and S -15) were eliminated by road and portal bench construction activities. The 2013 field and laboratory analysis are consistent with baseline data provided in the permit application. There has been a trend in many of the springs that shows the conductivity increases as the flow decreases. This trend is most likely caused by the increased time the water is in contact with the alluvium because of the lower flows. Surface Water Monitoring Stations: STREAMS AND DITCHES Thirty seven surface water monitoring stations including the North Fork of the Gunnison, Terror Creek, Hubbard Creek, Freeman Gulch, the Deer Trail Ditch, Stephens Draw, the Fire Mountain Canal and Gulches A through D are monitored quarterly for field 10