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on drill hole sites and abandoned roads, after exploration <br />• activities are concluded, is the planned method to prevent possible <br />soil erosion. <br />Some exploration drilling will be conducted ahead of the surface <br />mining activities. Where the drill site will be mined through <br />shortly (less than one growing season) after the conclusion of <br />drilling, reclamation will be accomplished after mining, not as <br />described in this Section, but rather in accordance with reclama- <br />tion plan 2.05.4. <br />Because air is the anticipated drilling medium, contamination of <br />water producing areas, such as streams, springs, stockponds and <br />groundwater, will be negligible. In the event air proves to be an <br />insufficient drilling medium, a non-toxic biodegradable foam will <br />be used. It is anticipated that mud will not be used as drilling <br />medium. Water, if used in the drilling operation, will be <br />recirculated to eliminate contamination to water areas. <br />If necessary, access roads and drill sites will be sprinkled with <br />water to prevent dusty conditions. No blasting will be conducted, <br />• nor is any gas or water pressure expected to be encountered in the <br />drilling program. No blowout control devices will be necessary <br />because there are no known valuable oil, gas, or geothermal <br />resources in the planned drilling area. Drill sites will be <br />maintained at all times to prevent injury to persons, livestock and <br />wildlife. If mud pits are necessary and are used, they will be <br />fenced to prevent entry by livestock or wildlife. All drilling and <br />exploration personnel will wear hardhats and steel toed shoes or <br />boots, and will adhere to the applicable Federal, State and Colowyo <br />safety and health regulations. <br />Exploration holes containing significant amounts of water will be <br />plugged the entire depth with concrete or other suitable media. <br />Otherwise, all dry holes will be backfilled with drill cuttings to <br />within 10 feet of the top, then plugged with concrete up to the <br />surface. All remaining cuttings will be scattered evenly over the <br />drill pad followed by the completion of reclamation. <br />Colowyo will use a rotary drill to conduct the coal exploration <br />work. <br />,~ <br />2.02-3 <br />