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Arsenic - The average arsenic value for the 26 Wadge samples analyzed was less than 0.11 ppm with a range of less <br />than 0.01 to 0.49 ppm (Wolf Creek samples were all below detection limits). Neither the Wyoming nor Montana <br />Guidelines present a suspect level for arsenic; however, the analysis values are sufficiently low to preclude the <br />possibility of any adverse impacts. <br />Cadmium - The range of cadmium content of the Wadge samples was found to be less than 0.02 ppm to a maximum <br />of 0.04 ppm. According to the Guidelines of the Montana Department of State Lands, cadmium values of between 0.1 <br />to 1.0 ppm are considered suspect. Of the 20 samples, none exceeded this minimum and due to the extremely low <br />values detected, the potential for adverse impacts of any cadmium contamination to the revegetation or hydrologic <br />processes is remote. <br />Copper - The average copper concentration for the Wadge samples was 2.2 ppm with a range of 1.1 to 4.6 ppm. The <br />guidelines of the Montana Department of State Lands reports that copper at concentrations in excess of 40 ppm is <br />considered suspect. Due to the extremely low copper values contained in these samples it appears that the likelihood <br />of copper being a problem with reclamation is highly remote. <br />Iron - The average iron concentration of the Wadge samples analyzed was found to be 75.3 ppm with a range of 31 to <br />132 ppm. Iron values for the Wolf Creek samples ranged from 31 to 63, averaging 50. The suspect level of iron, <br />according to the Montana Department of State Lands, is unknown: however, due to the fact that iron values reported <br />in CYCC's Permit Application No. 79 -177 averaged 59.3 ppm with a range of 2.3 ppm to 198 ppm, and no <br />environmental problems have been associated with this parameter, it is unlikely that iron poses any threat to either <br />reclamation or the hydrologic process. <br />Lead - The average lead concentration of Wadge samples analyzed was 2.7 ppm with a range of 1.15 to 5.4 ppm <br />(Wolf Creek samples were all below detection limits). The suspect level of lead, according to the Montana <br />Department of State Lands, is between 10 and 20 ppm. Since none of the lead values approach the suspect level, no <br />lead associated problems appear likely. <br />Manganese - The average manganese concentration of the Wadge samples analyzed was found to be 4.1 ppm with a <br />range of 0.4 to 10.97 ppm. The Wolf Creek samples ranged from 0.4 to 2.2, averaging 0.9. The suspect level of <br />manganese, according to the Guidelines of the Montana Department of State Lands, is 60 ppm. Since all values are <br />well below the suspect value, it is highly unlikely that manganese levels would affect eith reclamation of hydrology. <br />Molybdenum - All of the molybdenum values were below the detection limits of the laboratory value of 0.5 ppm. It <br />is unlikely that molybdenum poses any potential environmental problem. <br />Zinc - The average zinc concentration of the Wadge samples analyzed was 4.1 ppm with a range of 1.37 ppm to 13.4 <br />ppm. The Wolf Creek samples averaged 1.8, with a range of 10 to 3.4. The suspect level of zinc, according to the <br />Montana Department of State Lands, is greater than 40 ppm. Since all zinc values are well below the suspect value it <br />appears highly unlikely that zinc will pose a problem in the reclamation process of this site. <br />Mercury - Every Wadge sample analyzed was below the detection limit of 0.2 ppm. The suspect level of mercury, <br />according to the Montana Department of State Lands, is 0.4 ppm (400 ppb). With subsequent changes in mercury <br />detection limits, the Wolf Creek samples ranged from 25.6 to 68.6 ng/g (ppb), averaging 45.5. It is unlikely that <br />mercury will pose an environmental problem for this site. <br />Sulfur - Three forms of sulfur have been analyzed in order to predict the likelihood of acid - forming overburden. All <br />of the sulfur analysis values appear to be low. The buffering capacity of the associated strata, as indicated by pH, EC, <br />and calcium values is relatively high, and acid formation has not been a problem to date in either the mine spoils or the <br />coal refuse, so the likelihood of creating acid - producing spoil is considered to be low. <br />TR13 -83 2.04 -18 11/03/14 <br />