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<br />. <br /> <br />. <br /> <br />problems. At this time, the total produced flow from the 16 wells <br /> <br />was 720 gpm and the temporary brine pond contained 70 acre-feet (AF) <br /> <br />of its 170 AF safe capacity. Lowering of the brine-freshwater inter- <br /> <br />face levels was evident in observation wells throughout the wel1 field. <br /> <br />Several feet of interface drop were noticed as shown on attached <br /> <br />Figure 1. Figure 1 shows elevation versus time of the ground water, <br /> <br />50,000 mmho/cm electroconductivity, and 150,000 mmho/cm electrocon- <br /> <br />ductivity levels of a typical observation well, 3El in the upper <br /> <br />east well field. <br /> <br />The Dolores River flows started to increase in April because of <br /> <br /> <br />spring snowmelt, with high flows in the range of 8,500 cfs by mid- <br /> <br /> <br />month. A reduction in brine inflow throughout the valley was antici- <br /> <br /> <br />pated by this tim~ but the high flows carrying IGW levels of dissolved <br /> <br />solids masked the brine inflow throughout the valley. By mid-April, <br /> <br />the temporary brine pond contained 110 AF of its 170 AF safe capacity. <br /> <br />To save capacity in the brine pond until after high flows when the <br /> <br />pump testing results could be positively identified, the pumping rate <br /> <br />was reduced. Because the brine-freshwater interface level was belm, <br /> <br />the river bottom along the upper west well fiel~ test wells along this <br /> <br />area (1\" 211, 23A, 3\<, 4\<, and 10\<) were shut down. The pumping rate <br /> <br />stabilized at 560 gpm. Water table and brine-fresh water levels began <br /> <br />to rise during the last part of April and into May. The water table <br /> <br />levels increased more than the brine-fresh water interface leaving a <br /> <br />larger freshwater zone above the interface. Refer to Figure 1. <br /> <br />()OC4~4' <br />