2016-08-10_PERMIT FILE - P2016021 (2)

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Drill holes will be abandoned as completed such that only one drill hole is open at any time. Upon completion of drilling operations, a bentonite and fresh water slurry or neat cement grout that is specifically formulated for well or drill hole abandonment will be placed through the drill pipe and circulated from the bottom of the drill hole in a manner that assures against the vertical movement of groundwater found in the drill hole. This will include the annular space surrounding casing left down the hole. If circulation from the bottom is not possible, abandonment slurry or grout will be mixed at the surface, circulated through the drill pipe from the bottom of the drill hole under pressure and placed in stages as the drill pipe is retrieved from the drill hole. A ten -foot cement surface plug will be placed within the top twenty feet of each drill hole. Portland cement mixed with clean water and aggregates, or bagged cement mixed with clean water, will be used for the surface plug. Remaining surface casing will be removed below the ground surface in a manner that will not interfere with reclamation requirements. If the surface casing cannot be removed, the casing will be cut at least two feet below ground surface. The annulus will be sealed in a manner that assures against the movement of surface water down the drill hole. The top of the surface plug will be two feet below the ground surface to eliminate physical hazards to humans and animals as well as to prevent ponding of water directly over the drill hole, allow for placement of growth media, and allow for passage of vehicles and equipment. 2.6.4. Solid Waste and Hazardous Substances [43 CRF 3809.420 (b) (vi)]; Non -hazardous exploration project -related refuse will be collected in trash bins and/or containers and removed from the site for proper disposal at an authorized site on a regular basis. No refuse will be disposed of on site. Materials used at the site may include diesel fuel, gasoline, hydraulic fluid, and lubricating grease. Approximately 100 gallons of diesel fuel and gasoline will be stored in fuel delivery systems on drill rigs and support vehicles. Approximately 50 pounds of lubricating grease and 35 gallons of hydraulic fluid will be stored on each drill rig or transported by drill trucks. Transportation of these materials will be conducted in accordance with applicable regulatory guidelines. 2.6.5. Air Quality [43 CRF 3809.420 (b) (1Q, Vehicles associated with the exploration program will maintain a safe and appropriate speed limit for existing road conditions which will minimize fugitive dust emissions, protect wildlife, and maintain operational safety. Existing roads will be watered as necessary to control fugitive dust. Gasoline combustion engine 4x4 trucks will be used daily to move crews, drill supplies and core to and from the drill sites. Intermittent daily use will include 2 to 3 4x4 vehicles. A single, small water pump would run continuously supplying water to the drill sites. Daily fuel consumption —10 gallons.