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• Although fewer exceedences of the livestock standards were noted for ell Yoest monitoring <br />wells in comparison with the domestic end agricultural standards, the suitability of <br />ground water in the various geologic units monitored et the Yoest mining arse is <br />questionable. Some monitoring wells show no livestock standard exceedences (f.e., YGAL 75, <br />YLOV4), suggesting ground water in select portions of each unit may be suitable for <br />livestock usage. Considering the proportion end magnitude of livestock standard <br />exceedences listed in Table 7-2G, the only potential use of ground water in the various <br />geologic units at the Yoest mining arse is livestock we taring, depending on Location of <br />the potential point of source. <br />Yell Yield Suitability. In addition to producing water of sufficient quality to meet the <br />recommended limits established for a given use (domestic, irrigation, livestock), an <br />aquifer also should be able to yield quantities of water sufficient for the given use. <br />Hydraulic properties (transmissivity, hydraulic conductivity, storetivity) of the geologic <br />units within end adjacent to the Yoest permit area have been assessed in the 'Aquifer <br />Characteristics" section of Teb 7, end summery information regarding these properties ere <br />presented in Tables 7-9 and 7-10. <br />• Table 7-25 shows a comparison of trensmissivi ty with potential use. With the exception of <br />alluvial Well TSAL7, Wedge overburden Well YOV1 and Yedge coal WeIL YW2, transmissivity <br />values determined et ell other wells in the various geologic units tested were less then <br />10z ftz/day. Trensmissivities determined at Yells YSAL7, YOV1, and YY2 do not exceed 300 <br />2 <br />ft /day, and ere suspect for Veils YOV7 and TV2. Table 7-25 indicates that well yields <br />determined et ell units tested at Yoest are not suitable for irrigation use. <br />Transmissivity values determined et select el luvial wells in Sage and Grassy Creek and et <br />Lennox overburden and coal wells indicate the well yields would be considered fair to good <br />for domestic use. All other units would be classified as either poor or infeasible for <br />domestic use based on well yields (transmissi vi ties). Although no information is provided <br />for livestock use in Table 7-21, it is reasonable to assume that livestock yield <br />requirements are similar to domestic requirements. <br />Sorinos <br />. spring water quality at the Yoest mining area has been monitored since 7997. Details of <br />the monitoring history on a site-by-site basis is described in Teb 15. Baseline <br />geochemicel data, statistical summaries, trilinear diagrams, tables of percent <br />73 <br />