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• chemical fingerprint of the well water is virtually identical with the DP Spring water, (see Section K.2), <br />~a hich also originates from the Burro Canyon Formation. <br />It is interesting to note that only one of the seven exploration holes drilled by Cotter in 1996 near the <br />Whirlwind Mine ena~untered water in the Burro Canyon Formation. A tlow of less than 2 gpm was <br />reported in Drill Hole JB-96-1 at a depth of 94 Feet (see Appendix D). The lark of Burro Canyon water <br />in G ofthe 7 drill holes indicates that the Burro Canyon aquifer may he discontinuous over this portion <br />of the mesa. This could he due to limited recharge and natural edge effects along the perimeter oCthe <br />mesa or imparts from historic mining activities. As discussed in Section 7, there is an existing vent <br />shaft and historic drill holes in this area that may have drained portions of the Burro Canyon and <br />Brushy Basin aquifers into the underlying mines. <br /> <br />~: <br />• <br /> <br />r <br />.~ .~_ ~ ..t.._ _. _ a.ii7 `< <br />(3/.a/ l1'rl/ <br />6f'hirl-ri~tc! ;t-find O7 (rcr. : f Aril Ot+') G-9 <br />