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KLEINEELDER <br /> i <br /> 5 MONITORING RESULTS <br /> The depth to groundwater was measured in. each monitoring well included in this event. The <br /> depth to groundwaterdata was converted to elevation in reference to mean sea level for the <br /> calculation of groundwater flow direction and gradient. <br /> The 12 groundwater samples were submitted under chain-of-custody procedures to Sequoia <br /> Analytical Laboratories of Sacramento, California. Table 2 is a summary of the analytical results <br /> for groundwater. For a complete report of the analytical results please refer to the chain-of-. <br /> custody forms and laboratory analytical reports included in Appendix C. <br /> 5.1. WATER LEVELS <br /> On February 262003 all twenty monitoring wells and three piezometers were sounded for depth <br /> to groundwater. On March 4, 5, and. 6, 2003 twelve of the twenty monitoring wells were <br /> sampled (see Section 4). The depth to groundwater ranged from 43.33 feet below the top of well <br /> casing (T.O.C.)to 52.53 feet below T.O.C. <br /> The groundwater elevations ranged from —32.28 feet msl to —33.07 feet msl at the site. The <br /> ,groundwater gradient was calculated to be relatively flat at 0.0006 feet/foot, and a general <br /> direction of flow to the cast/southeast. Plate 3 shows the interpreted groundwater contours. The <br /> reported groundwater flow direction has been consistent with the historical data collected at the <br /> site. Please refer to Table 1 for the recorded groundwater elevations on February 26, 2003 and <br /> past monitoring events: <br /> 12280.MON I ST03R524 Page 8 of 12 <br /> C 2003,Kleinfelder,Inc May 6,2003 <br />