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E 1 LFR Levine-Fricke Creek, an intermittent stream, is located 500 feet to the south. Other surface water in the vicinity of the Site consists of Delta Mendota Canal (located approximately 0.5 mile to the southwest) and the California Aqueduct (located 1 mile to the southwest). 3.0 FOURTH QUARTER GROUNDWATER MONITORING i 3.1 Scope of Work Duringthe fourth quarter 2 q 003, LFR staff measured the depth to groundwater and collected groundwater samples from the five site monitoring wells (MW-1 through MW-5). The five groundwater samples were submitted to a state-certified laboratory for chemical analysis and LFR staff evaluated the monitoring and sampling results. 3.2 Groundwater Monitoring Quarterly groundwater samples were collected from wells MW-1 through MW-5 on > October 9, 2003. Before the wells were purged and samples were collected, depth to groundwater was measured using an electronic water-level meter. Groundwater ' elevations were calculated by subtracting depth to water from previously surveyed monitoring well elevation measurements. Groundwater elevations are summarized in Table 1 and groundwater elevation contours for May, August, and October 2003 are shown in Figures 3, 4, and 5, respectively. Each well was purged prior to sampling by removing at least 3 well casing volumes of water. The specific conductance, pH, and temperature of the removed water were measured and observed during well purging. The water-quality parameters and other pertinent information were recorded on water-quality sampling data sheets (Appendix A). After water parameters stabilized, groundwater samples were collected using a new, disposable bailer at each well. The water was poured into laboratory-supplied containers. Each container was capped, labeled with the well identification, time and date of sample collection, and analysis requested, and then placed into an ice-chilled cooler for transport to the laboratory. Standard chain-of-custody protocol was followed during the sample handling process. Water generated during sampling activities was transferred into properly labeled 55- gallon drums. The water in the drums will be sampled and analyzed for appropriate disposal. 3.3 Chemical Analyses Collected groundwater samples were submitted to Severn Trent Laboratory, Inc. (a state-certified analytical Iaboratory), located in West Sacramento, California, on a z TTFS QMR Q4-03.FINAL:IEE page 3