2009-05-22_PERMIT FILE - C1981044A (6)

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bearing zone in accordance with 43 CFR 3484.1(a)(1). All surface casing will be removed and/or cut off three (3) feet below the surface. An approved expandable plug will be placed ten (10) feet below the surface when cuttings are used to backfill the hole, and an approved cement slurry will be placed within three (3) feet of the surface. Development drill holes may be temporarily secured for possible re-entry or future use prior to final abandonment. In such instances, drill holes will either be cased or sealed to prevent possible aquifer communication as described above. Development holes will be surface-cased and cemented or grouted in all instances and tightly capped to prevent unauthorized entry or surface or subsurface water in-flow. Protective barricades or fencing will be installed to prevent damage to the portion of the casing protruding above the ground surface. If development drill holes are not subsequently used for mine development purposes, they will be abandoned in accordance with the standard procedure previously described. Items specific to hole DDP-94-001 (hole A94) are as follows: equipment will be cleaned and oil leaks repaired prior to such equipment using the river crossing. In the event a fuel tank is needed during the drilling, such tanks will be moved across the river on a truck-bed or elevated trailer. All materials produced by drilling will be contained and prevented from entering the river, with the possible exception of water encountered during drilling which will be discharged in accordance with our CDOH permit. The drilling pad will be located out of high flow channels and areas anticipated to be inundated by high spring flows. Disturbance to trees will be avoided, and disturbance io understory vegetation will be minimized to [he greatest extent possible. Items specific to hole DDP-95-14 (MR 95-40) are as follows: Following completion of drilling and logging of the hole, steel casing will be installed and grouted to prevent hydraulic movement through the annulus or surface. The Middle Sandstone aquifer will be screened for sampling. Well casing will be left protruding a minimum of three {3) feet above the ground surface and will be protected from damage by a fence. Prior to initiating sampling of 95-14, an approved sampling program for frequency and monitoring parameters will be obtained. A small water control berm will be constructed along the lower side of the site to prevent potential suspended solids migration from the drill pad. Reclamation costs are estimated on an average of $1,350.00 bulldozer fee plus $950.00 for mulched-seed mix per acre of disturbance. Seed Mix For Drill Sites Western Wheat Grass 8.1 PLS/ac Intermediate Wheat Grass 7.2 PLS/ac Indian Rice Grass 2.7 PLS/ac All seed to be broadcast covered by a straw mulch then crimped by a dozer. Proof of compliance will be provided within 60 days after abandoning a drill hole, specific drilling program approved by the Division, or when requested by the Division, the operator will submit a report detailing the following information: • Location of the drill hole as spotted accurately on a topographic map • Depth of drill hole • Surface elevation of drill hole • Intervals where water was encountered during drilling activities • Diameter of drill hole • Type of cement or other approval sealant used • Amount of cement, volume, slurry mixture or other sealant used in plugging drill hole • Name of drilling contractor and license number or drill and rig • A brief narrative of how and why the program was conducted. Permit Renewal No. 4 2.05-7 Revised 3/5/03