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~ • pH. The A and B-Groove aquifers are similar in water quality with <br />moderate TDS, conductivity, SAR, but high fluoride and pH. The <br />Dissolution Surface aquifer is characterized by high TDS, <br />conductivity, SAR, magnesium, potassium but moderate fluoride, and <br />low pH. <br />Water level data indicate a baseline condition with four distinct <br />zones. The potentiometric level of the Perched aquifer is located <br />at approximately 310 feet from surface and exhibited no water well <br />pumpage effects. The potentiometric level of the A-Groove and B- <br />i <br />Groove aquifers was measured at 439 and 449 feet from surface <br />respectively and did indicate pumpage effect. The water well <br />Na26-90-1 was completed in the A-Groove, therefore pumpage effects <br />• were expected, but the B-Groove data also indicated pumpage effect <br />to a lessor degree. Communication between the A and B-Groove was <br />expected based on data from the Horse Draw and Maxi-pad tests. <br />The Dissolution Surface aquifer located at approximately 459 feet <br />from surface, did not exhibit pumpage effects. Figure 2-6 <br />illustrates potentiometric levels prior to water well pumpage. <br />Figure 2-7 illustrates levels before and during pumpage. <br />No change in level was noted in Perched or Dissolution Surface <br />aquifers. A direct correlation is noted between pumpage and <br />levels reported for the A-Groove. The pumpage effect on the B- <br />Groove is less than for the A-Groove, but notable. <br /> Figure 2-8 illustrates water level data after extended pumpage, <br />• with no effects noted on Perched or Dissolution Surface aquifers. <br />38 <br />