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state Rea. <br />Aquifer tests were performed on wells oong~leted in the Lbw Camp (Peek <br />alluvium (46-A and 69-A) arxi one well ownpleted in the Howl Creek .- <br />alluvium (68-A). At well 46 A, both a bailer test and a slug test. <br />were conducted to verify the tr.~n~,,;~~ivity value at this site. .fie <br />results of the aquifer testing are ciimmarized in Table 7-96; specific <br />test data and graphs for well 46 A can be found in 4hb 7, Section <br />V.II.A.2.c. of the 1986 Seneca II Mine rene4ral package, and <br />information for wells 68-A and 69-A is located in AppPT~IY C of the <br />1988 Seneca II Mine Annual Hydrology Report. <br />As can be seen in Table 7-96, trancm;ssivities in the Cow Camp Creels <br />and Bowl Creek alluvium range frcnn 4.1 ft2/day (slug removal test) at <br />46-A to 26 ft2/day at 69-A, relatively low values for alluvial <br />aquifers. However, these values are similar to an alluvial aquifer <br />r*~*~~+~~sivity value measured at Peabody's Seneca II-W Mine, 1.4 <br />ft2/day. <br />Due to the low yielding nature of the Caw Cam Creek and Bond Creek <br />alluvial aquifers, slug or bailer aquifer tests were perfannod. • <br />Since these tests stress a relatively small volume of the aquifer, <br />aquifer characteristics derived using these tests probably reflect <br />conditions near the well bores. It also should be noted that bailer <br />tests should be used to assess confined aquifers; however, the yields <br />from the unconfined Bond Creels and Cow Camp Creek alluvium are <br />sufficiently low that delayed gravity flow is insignificant, and the <br />alluvial aquifer's response is similar to that of a confined aquifer. <br />D. Review of Pit Inflows at Seneca II Mine <br />A detailed hydrologic analysis was provided in Section III.B.l.b., <br />'Tuning Operation", of the permit application to estimate ground <br />water flow into mine pits. 'This analysis determined that each Wadge <br />Coal pit would yield 1.722 acre-feet of water per pit, and that the <br />Wolf Creek seam would yield negligible amounts of water (7.26 x 10 11 <br />acre-feet per pit) which would be entirely last thrax~i evaporation. • <br />7-331 Revised 08/20/93 <br />