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There is no significant trend in TDS differences from the overburden water to the spoil water, <br />although averaging the samples from 1995, 1996, 2000 and 2001 shows a difference of 200 ppm <br />or a 6.6% increase. Overall, water quality of the spoil water may be only slightly higher in TDS than <br />the undisturbed overburden water. The quality of both waters are relatively poor. However, the <br />spoil water quality is affected to a significant degree by the time of year when irrigation is occurring <br />on the surface. Table 2.05.6.(3)-3 shows the TDS levels and flow rates for various samples taken <br />from 1987 to the present for the Spoil Spring and the NPDES 001 discharge. TDS for wells GW - <br />N9 and GW -N15, which are located in undisturbed overburden, are also included in the table. <br />The monthly flows and TDS values from the NPDES 001 discharge show a direct correlation <br />between TDS and flow rate. As the flow rate gets lower, the TDS gets higher. <br />July 2016 (TR -74) 2.05.6(3)-22 <br />