2009-04-15_REVISION - X200923100

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truck andior pipe trailer. rig-up truck, air compressor. cure trailer. and two or three 4 x -) pickups fin- the drill-cre\? and company representatives. For each coal exploration (nun-geotechnical) drillhale. a spurt section (t\ picalk 40-60 feet) of threaded surface casing %? ill he set to stahiliie unconsolidated surface materials. Drillholes \N ill be a nominal 6.25 inches in diameter and \\ ill yarn in depth from approximately 100 to 1,900 feet. Holes drilled for geotechnical investigations range from 50 to 150 feet. The anticipated total depth for each coal exploration drillhale is identified in fable ?. Sofa Ovek Pi-aide') 2001) h'xploratii,n Prf) ran! Drillhole 5Jwcifrc ariuus. It is anticipated that tile Wadge coal seam and associated roof and fluor units \\ ill he cured in each non-ucotech drillhale. Several hales (ccu037. ccu044, ccuW8. ccu042, ccu048. ccu046 and ccu040) mll be drilled down to the wolf Creek coal seam. Associated roof and floor units "ill also be cored for these drillholcs. Ifother coal seam, of interest arc penetrated (c.g.. Lennox or Sage Creek) they nim he cared. as \\cll. Cares gill be recovered, examined and lugged b\ a qualified geologist. and core samples ntav he sent-off for analysis of coal and roof'floor chemistry and characteristics and ruck-strength parameters. It is anticipated that the ma_joritN ol'drillholes will extend approximatcly 40 feet bcla\\ the Wadge or Wolf Creek coal scam. The primary circulation medium N\ ill be \\atcr and drillinu, mud. In the event that subsurface conditions are favorable, air or an air'foant medium may be utilized, as an altcrnamc to niud. Air or an al'i-46ant medium mll be utilized for all geotechnical holes. Water far drilling will he obtained from stuck ponds located on surface controlled by Sage Creek. Drilling contracts \%ill specify that only non-toxic. blurdegradable compounds and additives may be used for drillim, muds. IIJ p,k rl'/ 10