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hn KLEINFELDER <br /> 5 MONITORING RESULTS <br /> V <br /> E <br /> The depth to groundwater was measured in each monitoring well included in this event. The <br /> depth to groundwater data was converted to elevation in reference to mean sea level for the <br /> calculation of groundwater flow direction and gradient. <br /> The 7 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 <br /> hain-ofcustody forms and laboratory analytical reports included in Appendix C. <br /> 5.1. WATER LEVELS <br /> On May 15, 2003, all twenty monitoring wells and three piezometers were sounded for depth to <br /> groundwater. On May 16 and 19, 2003 seven of the twenty monitoring wells were sampled (see <br /> Section 4). The depth to groundwater ranged from 42.51 feet below the top .of well casing <br /> (T.O.C.) to 51.74 feet below T.O.C. <br /> The groundwater elevations ranged from —31.42 feet msl to —32.30 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 east/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 May 15, 2003 and past <br /> monitoring events. <br /> f <br /> I. <br /> 12280.MON/ST03RS97 Page 8 of 12 <br /> ®2003,Kleinfelder,Inc July 1,2003 <br /> f <br />