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Final Technical Report, 2014 Monitoring Well Rehabilitation Program Bowie Mine 9 <br />2.3 Well P- TC -03 -01 (Upper B -Seam) <br />From August 10 through August 15, 2014, six days were spent cleaning and sampling <br />monitoring well P- TC -03 -01 Upper (U. B- Seam). Rehabilitation and development began by <br />jetting the 3 -inch steel well casing from 675 feet to 711 feet btoc. The return water from this <br />effort was murky tan -gray in color and brought up abundant gritty, gray cement/bentonite <br />particles. After a day and a half of jetting, the hole was evacuated using the airlift technique and <br />a recovery test was performed. Following the recovery test, the hole was continuously bailed for <br />two hours and a field water quality sample was collected every 30 minutes. The water quality <br />results on August 11, 2014 showed an average pH of 11.59 s.u., an average conductivity of 1,442 <br />µS /cm, and an average temperature of 22.5 °C. After a twelve hour recovery period, the well's <br />SWL on August 12, 2014 was measured at 667.2 feet btoc. <br />Review of the downhole video showed the top of screen interval appearing at about 703 feet and <br />about 2 feet of screen exposed before the well is packed off with a fairly hard gray -white deposit. <br />In an effort to remove the grayish deposit and expose more of the 10' length of screen, a jetting <br />tool impregnated with carbide material to facilitate mechanical grinding of the deposit along with <br />water jetting was used to grind away at the obstructing deposit. This technique was used for <br />three hours with only 2 feet of progress to a depth of 705 feet. After tripping the jetting tool out <br />of the hole, it was found that the tool face was severely abraded by something extremely hard at <br />the bottom of the well. A subsequent camera survey of the well showed a gold -white color metal <br />object with an irregular 'T' shape and appeared to be a T -fence post at the bottom of the well. <br />While waiting for a magnet to be constructed to attempt removal of the metal object, the well <br />was again evacuated using the airlift and bailing techniques and a suite of water quality samples <br />taken showing murky gray water with an average pH of 11.15 s.u., an average conductivity at <br />489 gS /cm, and an average temperature of 21.3° C. <br />Several attempts were made on August 19, 2014 to remove the t- post/object from the well using <br />a strong magnet attached to the bailing tool. Metal shavings were recovered and the magnet <br />grabbed the t- post/object several times, but was unable to remove it. It is thought that the t- <br />post/object is embedded in the grayish deposit clogging the borehole bottom, thus, making it <br />very difficult to extract. At this time it was decided to wait until the drilling rig with an overshot <br />extraction tool was available to continue the rehabilitation attempt on this well. <br />On September 14, 2014, RACS moved there drill rig to well P- TC -03 -01 (Upper B -Seam) in <br />order to re- attempt removing the t- post/object from the well. The t- post/object could not be <br />extracted after numerous attempts, so the rig was moved off the well and no further work was <br />done to rehabilitate this well. It is believed that this well may have been vandalized. It should <br />be noted that this well could still be used as a piezometer to monitor groundwater levels, but it <br />should not be used for collecting water quality data. The well completion diagram is presented <br />in Appendix A. <br />November 2014 HydroGeo, Inc. <br />