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aquifer as the Lewis Shale would be expected to contain high <br />• TDS concentrations at times. TDS in well P3 has generally shown <br />steady increases in 1988. TDS concentration in the Second White <br />Sandstone well (PS) has varied with time (see Figure B-33). TDS <br />concentrations have been rising since 1984. Values for 1988 may <br />be showing some stabilizing effects. This variation is probably <br />caused by variable amounts of recharge. The TDS concentrations <br />from the Third White Sandstone (PB) in this area have been much <br />more stable. Figure B-34 generally shows a gradual increase in <br />concentrations with time, except for the August, 1983 value. <br />Figure H-35 indicated an increasing trend in TDS for the <br />Johnson Gulch well J1 until 1986 and has since shown a decrease <br />similar to the increase prior to 1986. The 1986 value is <br />• significantly higher than other values, although it is believed <br />to be a good measurement. These changes relate to the flow <br />changes with time observed in Johnson Gulch. An increasing trend <br />has been observed in the Flume Gulch well (COY) since October <br />1985. The TDS value 4or August 1965 is probably a good value, <br />but is significantly higher than other data. The increasing <br />trend in the COY alluvial well is natural. <br />The plot for Third White Sandstone well 81-03a is shown on <br />Figure 8-37. TDS concentrations have been steady since <br />monitoring of this well began in 1987. The Glux-1 well was <br />installed in September of 1988 to monitor the First White <br />Sandstone upgradient of the Lux domestic well. Figure B-38 <br />presents the TDS collected for the newly completed Glux-1 and <br />• also the 1986 and 1987 values from the Lux domestic well showing <br />a good comparison between the values. <br />3-H <br />