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KLE/NFELDER <br /> B l9M1 oCl 19M1 5 I <br /> 3 ACTIVITIES CONDUCTED <br /> Three existing on-site monitoring wells/piezometers in the plant area (P-1, P-2, and P- <br /> 3), three on-site monitoring wells in the McKinley Avenue Rapid Infiltration Area south <br /> of the plant (W-1, W-4 and W-5), and the six monitoring wells in the Louise Avenue <br /> Recharge Area located southeast of the plant (L-1, L-2, L-3, L-4, L-5, and L-6) were <br /> 1 sounded for depth to groundwater during the quarterly monitoring event. Groundwater <br /> samples were subsequently collected, and submitted for chemical analysis, from the <br /> ' three monitoring wells located in The Rapid Infiltration Area and the six monitoring wells <br /> in the Louise Avenue Infiltration Area. <br /> 3.1 THIRD QUARTER 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 <br /> beginning of the sampling round prior to purging and sampling the wells. The depth-to- <br /> water was measured in each well according to the protocol described in Appendix A, <br /> Section A-4. The depth-to-water measurements were converted to groundwater <br /> elevations with respect to mean sea level or a local benchmark by subtracting them <br /> from the surveyed casing elevations. <br /> i3.1.2 Collection of Groundwater Samples <br /> On September 14 and 15, 2011 nine groundwater samples were collected. The wells <br /> were purged and sampled using disposable bailers as described in Appendix A, Section <br /> ' A-3.2. During the purging of the wells the groundwater was monitored for pH, specific <br /> conductivity, temperature and color. Copies of the monitoring well purging and sampling <br /> log are included in Appendix B. The water purged from the wells was not contained. <br /> 101486.41ST011 R242 Page 7 of 17 October 31, 2011 <br /> ' Copyright 2011 Kleinfelder <br />