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' LK DER 3. BngM Poop4.FyM 5olutlani ' 3. ACTIVITIES CONDUCTED ' Three on-site monitoring wells/piezometers in the CNP Plant Area (P-1 , P-2, and P-3), three on-site monitoring wells in the McKinley Avenue Rapid Infiltration Area south of the plant (W-1, W-4 and W-5), and the six monitoring wells in the Louise Avenue ' Recharge Area located southeast of the plant (L-1, L-2, L-3, L-4, L-5, and L-6) were sounded for depth to groundwater during this quarterly monitoring event. Groundwater samples were subsequently collected and submitted for chemical analysis from the monitoring wells located in the McKinley Avenue Rapid Infiltration Area and the Louise Avenue Application Area. ' 3.1 FIELD ACTIVITIES CONDUCTED ' 3.1.1 Measurement of Groundwater Levels ' Water level measurements were made in each monitoring well and piezometer at the beginning of the sampling round prior to purging and sampling the wells. The depth-to- water was measured in each well according to the protocol described in Appendix A, Section A-4. The depth-to-water measurements were converted to groundwater ' elevations with respect to mean sea level or a local benchmark by subtracting them from the surveyed casing elevations. ' 3.1.2 Collection of Groundwater Samples On December 20 and 21, 2011 nine groundwater samples were collected. The wells ' were purged and sampled using disposable bailers as described in Appendix A, Section A-3.2. During the purging of the wells the groundwater was monitored for pH, specific conductivity, temperature and color. Copies of the monitoring well purging and sampling logs are included in Appendix B. The water purged from the wells was not contained. ' 3.1.3 Chemical Analysis of Groundwater Samples ' Each of the groundwater samples collected for quantitative analysis was submitted under chain-of-custody control to the following laboratories: 101486.41ST012R025 Page 8 of 20 February 1, 2012 Copyright 2012 Kleinfelder