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• Zones of marginally suitable to unsuitable material were identified at each of the six Phase I and <br />Phase II sample locations and are documented by parameter, lithology, location, and sample <br />interval <br />TABLE 2.04.6-9 <br />ADDITIONAL CHEMICAL PARAMETERS REQUIRED BY CDMG FOR <br />PHASE I DRILL HOLE 870E, <br />NEW HORIZON 2 STUDY AREA, MONTROSE COUNTY, COLORADO <br /> <br /> LITHOLOGIC UNITS' <br />PARAMETER <br />(UNITS) <br />1 <br />2 <br />3 <br />4 <br />5 MEANZ <br />Copper, ppm 0,5 0.4 0,3 1.1 0.8 0.5 <br />Lead, ppm 0.5 1.2 1.6 2.0 1.4 0.7 <br />Arsenic, ppm <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <br />Zinc, ppm 0.5 1.2 0.8 0.8 1.3 0.6 <br />Nickel, ppm 0.3 0.4 0.1 1.2 0.2 0.3 <br />Cadmium, ppm <0.02 <0.01 <0.01 <0.01 <0.02 <0.02 <br />Mercury, ppm 0.03 <0.02 0.01 0.04 0.01 <0.03 <br />' Lithologic units are identified in Peabody Appendix 6-1 and discussed earlier in the <br />Overburden, Interburden, and Underburden Characteristics section. <br />z Weighted mean value only includes Lithologic Units 1, 2, 3, and 4 which will atl be disturbed <br />by mining. Mean thickness of Lithologic Units 1, 2, 3, 4, and 6 is 55.9, 6.5, 7.1, 2.7, and 9.7 <br />feet, respectively. <br />• Revised 27 Aug 2002 35 <br />