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G00(ogfcaf Technics Inc Page 2 <br /> Groundwater Momtonng Report <br /> Project No 425 2 <br /> June 25,2003 <br /> o one of the deeper screened wells MW-102 was analyzed this quarter and was <br /> Only o p { ) Y <br /> found to be non-detect This is the tenth consecutive event that this condition has <br /> ' been documented <br /> Three monitored domestic wells tested during the June 2003 were non-detect for all <br /> ' analyzed constituents <br /> 1.0 GROUNDWATER MONITORING <br /> 1.1 Hydrology of Site <br /> ' 1.1.1 Horizontal Groundwater Gradients <br /> The average water table elevation at the site on June 6, 2003, was 73 02 feet above mean sea <br /> ' level This represents a decrease of 0 37 feet since the March 2003 event The water table <br /> groundwater gradient was 0 0012 ft/ft flowing N07°E <br /> The average groundwater elevation in the intermediate depth wells (MW-102, MW-105 & <br /> MW-107) for the June 2003 monitoring event was 72 92 feet above mean sea level and the <br /> intermediate depth groundwater gradient was 0 0018 ft/ft flowing N70°E <br /> A review of the groundwater gradients shows that the predominant groundwater flow varies <br /> from north to northeast with the slope ranging from 0 0009 up to 0 0044 ft/ft in the water <br /> table wells Table 1 of Appendix A summarizes the water table groundwater gradients and <br /> levels to date, and Figure 2 illustrates the June 6, 2003, groundwater gradient <br /> The predominant groundwater flow is to the east-northeast with the slope ranging from <br /> 0 0014 to 0 0270 ft/ft in the intermediate wells Table 2 of Appendix A summarizes the <br /> ' intermediate groundwater gradients and levels to date, and Figure 3 illustrate the June 6, <br /> 2003, groundwater direction and gradient in the intermediate wells <br /> Table 2 also summarizes the groundwater level data from the deep well, MW-202 <br /> ' The historical water table and intermediate groundwater gradients are included in Figures 4 <br /> & 5- Shallow and Intermediate Rose Diagrams <br /> 1.12 Vertical Groundwater Gradients <br /> Vertical groundwater gradients were calculated using monitoring wells MW-2/MW-102 <br /> (shallow/intennediate well pair) and monitoring wells MW-102/MW-202 <br /> ' (intermediate/deep well pair) During the June 6, 2003 groundwater-monitoring event, the <br /> vertical groundwater gradient in the shallow/intermediate well pair was in an upward, <br /> positive, direction with a magnitude of 24 3 times that of the water table horizontal gradient <br />