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5b-3) What seed mix (type and amount) will be used for revegetation; <br />Reseeding will be with the appropriate seed mix for the upland, rangeland or riparian area. Refer <br />to table 2 for the rangeland seed mix. <br />Table 2. Rangeland seed mix and rate. <br />Species Name Rate lbs/acre <br />Western wheatgrass 2.00 <br />Thickspike wheatgrass 0.50 <br />Streambank wheatgrass 1.50 <br />Blue grama 0.67 <br />Sideoats grama 2.50 <br />Smooth brome 1.00 <br />Spike muhly 0.33 <br />Buffalograss 0.50 <br />Little bluestem 1.20 <br />5b-4) Depth of drill holes; <br />Estimated depth of drill holes range from 450 ft to 1250 ft as indicated in Table 1. <br />5b-5) Whether aquifers will be encountered (include supporting references); <br />The Trinidad Sandstone has been identified as a regional aquifer. It is located below the Lower <br />Raton member and the Vermejo Formation at a depth of 500-900 ft below the Allen <br />Seam.Groundwater monitoring associated with the Golden Eagle Permit and the New Elk permit <br />indicate groundwater aquifers located within and above the Allen and Maxwell coal seam. (2005 <br />Annual Hydrology Report for the Golden Eagle Mine filed with DRMS May 10, 2006) <br />5b-6) Precise description of how drill holes will be sealed and plugged in accordance with <br />Rule 4.07; and <br />Abandoned drill holes will be plugged and capped below ground level, with a continuous <br />concrete plug from the bottom of the hole to the 1 ft below grade. Those holes will be marked <br />with a 4 ft long by 5/8 rebar pin at the top of the plug. A 1 1/2 inch diameter aluminum cap will <br />be attached to each pin that will identify it for location and surveying purposes. Holes that will <br />be left open for use as monitoring wells will be constructed per Rule 14 of the 2 CCR 402-2 <br />Water Well Construction Rules. <br />NECC 2011 NOI Attachment 2/7/2011