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performed to prevent future soil erosion. The disturbed drilling sites will be <br />graded to the original levels with rakes and shovels. Significant soil <br />disturbance beyond these locations is not anticipated. <br />Surface and Groundwater Pollution <br />Pollution of groundwater aquifers will not occur as all drill holes will be <br />permanently filled with cement, concrete or bentonite, thus preventing <br />surface water from entering the drill holes. Mitigation of stream channels or <br />ponds will not be required. Prior to reclamation of the sites, runoff and <br />sediment will be controlled with a silt fence or berm down gradient from the <br />site. <br />Air Pollution <br />Pollution of the air is not anticipated. Cuttings blown from the drill holes by <br />drilling air will have minimal distribution, and are expected to be confined to <br />the drill site. <br />Damage to Fish and Wildlife. Habitat or Other Natural Resources <br />Damage to wildlife or their habitats is not expected. The drilling sites are <br />relatively confined areas, and damage to other natural resources is not <br />anticipated. Large game fish are not known to exist within the area. <br />The drilling sites do not interfere with known archaeology sites identified in <br />the survey. The State Archaeologist will be notified should any antiquities or <br />other objects of historic or scientific interest, including historic or prehistoric <br />ruins, fossils or artifacts, be encountered during drilling. <br />Hazards to Public Health and Safety <br />All actions and procedures necessary to ensure public health and safety, and <br />compliance with applicable laws and regulations will be strictly observed. <br />Method of Plugging Drill Holes <br />All drill holes, including holes with artesian flow, will be plugged according to <br />procedures recommended by the US Geological Survey for abandonment of <br />exploration drill holes, and in compliance with Rule 4.07. Generally speaking, <br />the drill holes will be plugged with cement slurry (or equivalent) that will be <br />tremied into the hole, effectively plugging and sealing all coal beds and potential <br />groundwater aquifers. Drill cuttings may be placed in the hole above the <br />uppermost coal seam or aquifer intercept. The drill holes will be sealed with a <br />surface plug consisting of at least five feet of cement (or equivalent). Reclaimed <br />drill holes will be marked with a metal survey cap. Locations will be accurately <br />surveyed and distinctly numbered. <br />Any holes developed into water wells will be permitted with the Colorado <br />Division of Water Resources. <br />