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u <br />, 2.3 RECHARGE STRUCTURE NORTHWEST OF MONTE VISTA NATIONAL <br />WILDLIFE REFUGE <br />' <br />A ground water recharge structure was constructed west of the Monte Vista National Wildlife <br />' Refuge along the Monte Vista Canal in an attempt to correlate recharge outside of the so called <br />"Blue Clay" with change in the confined aquifer. Sketch showing the location of the recharge <br />' structure is included as Figure 2-3. <br />' Included on the sketch is the approximate locations of the upper most confining clay and the <br />' monitoring wells measured during the study period. Water levels in six wells were measured on <br />a monthly basis. Two of the six wells (Abandon and #13-1-16P) are located near the canal and <br />' are believed to be outside the confining clay so they are tapping the unconfined or ground water <br />aquifer. The remaining wells are assumed to tap the confined or artesian aquifer and the three <br />, easterly wells (#'s 14-10-16A&P, 14-14-2A and 14-23-2A) have been known to flow freely in <br />the recent past. <br />, <br />A thorough investigation into the location of the westerly limit of the upper most confining clay <br />, near this site has led to the conclusion that the limit is likely to be westerly of the recharge pit. <br />As a result, recharge from that portion of the Monte Vista Canal adjacent to the Refuge and from <br />' the recharge pit is likely to contribute primarily to the unconfined aquifer. <br />� <br />1 <br />' <br />, <br />' <br />J <br />2-5 <br />' <br />