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(KLKL E/NFELOER <br /> Bright People Fight Solutions. <br /> 3 ACTIVITIES CONDUCTED <br /> Three existing on-site monitoring wells/piezometers in the plant area (P-1, P-2, and P-3), three <br /> on-site monitoring wells in the MARIA south of the plant (W-1, W-4 and W-5), and the six <br /> monitoring wells in the N/SLAIA located southeast of the plant (L-1, L-2, L-3, L-4, L-5, and L-6) <br /> were sounded for depth to groundwater during the quarterly monitoring event (Figure 2). <br /> Groundwater samples were subsequently collected and submitted for chemical analyses from <br /> the nine monitoring wells at the MARIA and N/SLAIA areas. <br /> 3.1 FIRST QUARTER 2015 FIELD ACTIVITIES CONDUCTED <br /> 3.1.1 Measurement of Groundwater Levels <br /> Water level measurements were made in each monitoring well and piezometer at the beginning <br /> of the sampling round prior to purging and sampling the wells (Figure 2). The depth-to-water <br /> measurements were converted to groundwater elevations with respect to mean sea level or a <br /> local benchmark by subtracting them from the surveyed top of casing elevations. <br /> 3.1.2 Collection of Groundwater Samples <br /> On March 24 and 25, 2015, nine groundwater samples were collected. The wells were purged <br /> and sampled using disposable bailers. During the purging of the wells the groundwater was <br /> monitored for pH, specific conductivity, temperature and color. Copies of the monitoring well <br /> purging and sampling log are included in Appendix A. The water purged from the wells was not <br /> contained. <br /> 3.1.3 Chemical Analysis of Groundwater Samples <br /> Each of the groundwater samples collected for quantitative analysis was submitted under chain- <br /> of-custody control to the following laboratories: <br /> • California Laboratory Services of Rancho Cordova, California. <br /> • FGL Environmental of Stockton, California <br /> 00101486.8/SAC15R19291 Page 9 of 17 May 6, 2015 <br /> ©2015 Kleinfelder <br />