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2011-08-03_PERMIT FILE - P2011025
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2011-08-03_PERMIT FILE - P2011025
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Last modified
8/24/2016 4:36:29 PM
Creation date
8/5/2011 2:19:51 PM
Metadata
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Template:
DRMS Permit Index
Permit No
P2011025
IBM Index Class Name
PERMIT FILE
Doc Date
8/3/2011
Doc Name
New NOI application (form 2)
From
Lynx-Royal JV LLC
To
DRMS
Email Name
RCO
Media Type
D
Archive
No
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Appendices — DRMS Form 2 Public <br />Lynx -Royal JV LLC Wray Mesa NOI <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 />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pipe will be periodically withdrawn as the mudlevel rises in the hole.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 />- Wet Hole — Flowing Aquifer — Penetrating a flowing aquifer is considered highly improbable <br />due to historic drill log data and the experiences and testimony of consulted drillers and <br />miners. If by chance a flowing aquifer is penetrated, then drilling will pause and, depending on <br />extent of flow, the hole may be abandoned. If encountered, a grout/bentonitic plug sufficient <br />to contain the flow will be placed above and below (if applicable) the aquifer. The permitting <br />agencies will be consulted for further recommendations on abandonment methods in a hole of <br />this type. <br />B) Surface Restoration — <br />The cutting pits will be backfilled, and graded with native soil forming the top surface. These <br />areas will be seeded with approved seed mixture (see Appendix B). Any cuttings which <br />surround the hole collar or otherwise do not get to the pit during drilling will also be buried. <br />Where these cuttings are thin ( <2 "), they will be raked to mix with native soil and seeded. No <br />mineralized cuttings will be buried in the containment pits. Areas where equipment is driven <br />and the soil becomes compacted will be scarified and seeded with an approved seed mixture. <br />All areas of moderate soil disturbance or more will be broadcast with seeds immediately <br />following reclamation. <br />To the extent possible, remaining drill cuttings will be placed into the containment pit for <br />burial. No mineralized (radioactive) cuttings will be buried within the surface containment <br />Appendices Page 4 of 8 <br />
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