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Final Technical Report, 2014 Monitoring Well Rehabilitation Program Bowie Mine 1 <br />1.0 INTRODUCTION <br />Bowie Resource Partners, LLC (Bowie) is in the process of revising the Mine Permit for the <br />Bowie #2 Mine for the Spruce Stomp Lease (PR -14). During the review process, DRMS <br />identified deficiencies in the available groundwater baseline data for PR -14 and required Bowie to <br />initiate a program to rehabilitate or possibly replace six existing monitoring wells that have water <br />with high pH values, mud cake on the inside of the well casing, or pinched casing and cannot be <br />monitored (DRMS, 2014 and Bowie, 2014a). <br />Bowie contracted HydroGeo, Inc. (HydroGeo) to develop a work plan, supervise the field work, <br />and prepare a technical report summarizing the rehabilitation (rehab) program. HydroGeo <br />provided senior project management (Joe Frank), one field geologist (Paul Stubbe) and Bowie <br />provided temporary second and third field geologists (Brad Lindsay and Kendra Hinton) for part <br />of the field work. Bowie also contracted RACS LLC Drilling Company (RACS) from Delta, <br />Colorado to perform the rehabilitation and well drilling work including the use of one drill rig and <br />one workover rig. <br />2.0 SUMMARY OF FIELD WORK <br />The field work for the rehab program was initiated on July 22, 2014 and concluded on September <br />20, 2014, a total of 69 working days (including numerous weather delays and a few mechanical <br />interruptions). Bowie made a very concerted effort and committed a considerable amount of funds <br />to complete this program. During the program, two deep monitoring wells were successfully <br />rehabilitated (2010 -1SS and CWI- DH -60) and a new monitoring well, BRL- IP- 14 -67 -D -BLW, <br />was drilled and installed to replace BRL- IP- 00 -67 -D -BLW, which was abandoned. In spite of <br />extensive efforts, it was not possible to rehabilitate three of the wells, P- TC- 03 -01, P- TC- 03 -02, <br />and CWI- DH -58; however, wells P- TC -03 -01 and P- TC -03 -02 could still be used as piezometers <br />for measuring groundwater levels. <br />During the field work, RACS provided one Sterling 120 TC workover rig and one Speedstar 30K <br />rotary drilling rig. The following sections summarize the work performed on each well. It should <br />be noted that during the fieldwork, and as noted in the field book notes, the measured depths in <br />the wells did not exactly match the original completion diagrams. This was due to errors in the <br />downhole camera cable counting equipment, and strapped measurements of the tremie pipe. The <br />following descriptions use the original completion diagram measurements to provide consistency <br />for the reader. <br />A summary of the rehab program monitoring wells, work plan, and results is presented in Table 1. <br />Well locations are shown in Figure 1 and the original well construction diagrams are presented in <br />Appendix A. <br />November 2014 HydroGeo, Inc. <br />