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~' <br />KLM AQUIFER <br />Well GA2 has been used to monitor the KLM at the GA site. Figure 4.8-38 shows <br />the TDS for this well with time. A similar TDS to that observed for water from well <br />GAl is shown for well GA2. The KLM aquifer, which is above the QR aquifer, is <br />monitored a[ well GF3. Results from this well show steady concentrations with time <br />see Figure 4.8-39). <br />Field pH variations have been observed for well GA2 in the range of 6.4 to 7.9 <br />since 1974. These changes are thought to be from natural fluctuation. KLlf aquifer <br />well GF3 contains water with a pH of approximately 8.5. <br />SAR values for well GA2 are low with an average value of approximately 0.3, <br />while values for well GF3 are above 40. SAR values for well GF3 could create a <br />problem for irrigation of tight soils. <br />HI AQUIFER <br />Well GE2 is used to monitor the HI aquifer at [he GE site. TDS concentrations <br />for the HI aquifer in this area have been fairly steady with time with no <br />significant trends see Figure 4.8-40). The H and I coal seams have recently been <br />mined uphill of well GF4. TDS data from this well does not show a trend see Figure <br />4.8-41). <br />The TDS concentration, at the GB location in the HI aquifer, has not varied as <br />it has in the Third White Sandstone. Figure 4.8-42 shows a fairly steady <br />concentration with time except for three outliers. The values for the last two <br />4-233 z ~~,°1~~~ ~c3 Y '> ~t1~ <br />