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mainly reflects an undulation of the fold axis. <br />• 2.2.2.2 Lithologic Analyses <br />A total of 113 core and chip samples from the Edna Mine drilling program have <br />been analyzed in accordance with the methods listed in Section 2.2.3.2 by Front <br />. Range Lab., Inc., of Fort Collins, Colorado. Eighty-five samples from the Moffat <br />area, eleven from the reclaimed area and seventeen samples from the South Edna <br />area were acquired from the drill holes used for construction of the cross sections <br />described above. Samples thought to be lithologically representative of various <br />horizons were selected for analysis. The results of the analyses are listed in Section <br />2.2.4.2. <br />These analyses are consistent with previously published whole rock and water <br />quality analyses from the Edna Mine (McWhorter, et al., 1979; Skogerboe, et al., <br />1979; and Hounslow, et al., 1978). The analyses listed in Section 2.2.4.2 indicate no <br />obvious or unexpected geochemical problems. Three parameters merit further <br />discussion (electrical conductivity, boron and selenium). <br />Analyses yielding electrical conductivity above 2.0 mmhos per centimeter, boron <br />• above 0.75 ppm and selenium above 0.02 ppm were associated to their parent strata <br />and correlations attempted. Electrical conductivity above 2.0 mmhos does not <br />appear to be siratigraphically controlled, but generally tends to occur in a zone <br />below 20 feet and above 60 feet in depth. Boron analyses above 0.75 ppm and <br />selenium above 0.02 ppm likewise cannot be associated with specific strata, but in <br />general, tend to occur in the proximity of the prominent coal seams (Lennox, Wadge <br />Rider, Wadge, and Wolfcreek). <br />There is not an established method for estimating all aspects of water quality <br />impacts of surface mining from lithologic analyses. Moran, et al., 1978, discuss <br />sampling and analytical techniques but apparently relegate prediction of impacts to <br />judgmental approaches. In The case of The Edna Mine, two carefully executed studies <br />of water quality impacts due to surface mining have been made. Both studies <br />examined water quality from the Edna Mine and thus are deemed appropriate <br />analogs. <br />McWhorter, of al., 1979, constructed a model to predict the acquisition of <br />dissolved solids by water flowing through mine spoils using data collected from the <br /> <br />2.2-5 <br />