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Appendices — DRMS Form 2 Public <br />Royal USA Inc. Wray Mesa NOl <br />Figure A -1: Schematic map of proposed drill pad <br />Mud pits will be constructed as needed to contain the drilling fluids and to ensure that no fluids will be <br />introduced into ephemeral drainages or anywhere not contained. In the event that large amounts of water <br />are encountered during drilling, the pits will be designed and maintained so that only decanted water is <br />allowed to absorb into surrounding areas that are not ephemeral drainages. <br />Some of the access trails and drill pads may require some cutting of brush, tree limbs and possibly the <br />removal of select pinion or juniper trees. Cut material will be temporarily placed in a pile or piles <br />adjacent to the access trail or drill site, and then scattered back over the trail or site during reclamation. <br />See Appendix C for photos showcasing the general vegetation surrounding the proposed drill sites. <br />Drill Hole Abandonment <br />0 <br />No more than three drill holes will be left open at any one time. <br />A) Plugging Procedure <br />- Dry or Damp Hole - The drill hole will be backfilled as much as possible with cuttings, using <br />all the mineralized material first. After backfilling to within about 5 feet from the surface, a <br />spray foam plug or concrete plug will be brought to within about 2 feet of the surface. The <br />remainder of the hole to the surface will be filled with native topsoil. <br />- Wet Hole — Non - flowing Aquifer - While not expected to occur, the hole will be backfilled <br />with a thick bentonitic mud with a > 50 second viscosity to a point 50 feet above the static <br />water level. The mud will be pumped to the bottom of the hole through the drill pipe and the <br />pipe will be periodically withdrawn as the mudlevel rises in the hole. If closure occurs when <br />the drill rig is not available, 3/8 "bentonite chips will be added to the hole in a manner as to <br />avoid bridging until the bentonite chip backfill column is at least 50 feet above the static water <br />level. The remainder of the hole will be backfilled as per a dry or damp hole. <br />Appendices Page 4 of 9 <br />