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Historical data from the evaluation monitoring wells were evaluated for temporal trend using <br /> Sen's Slope trend analysis. Graphs of the Sen's Slope analyses are included in Appendix G. The <br /> only constituent to exhibit an increasing trend according to Sen's Slope analysis was sulfate at <br /> MW-2. Sen's Slope analysis identified decreasing trends in barium at MW-2, chloride at MW- <br /> IA and MW-2, and temperature at MW-IA. <br /> Eleven VOCs were detected above reporting limits in the samples from MW-IA and MW-2, <br /> which are screened in waste material. Table 2.3 presents the VOCs detected at MW-IA and <br /> MW-2 during the first quarter 2006 monitoring event. Only one VOC exhibited an increasing <br /> trend according to Sen's Slope analysis: 1,4-dichlorobenze at MW-IA. <br /> 3 <br />