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EIIC�t® <br /> I ' <br /> Mr James L Barton <br /> July 27, 2005 <br /> Page 2 <br /> I90 feet bgs Unit D wells include MW-81D, MW-23D, MW-24D, and MW-32 and are screened from <br /> approximately 97 to 103 feet bgs <br /> Groundwater measurements recorded on April 11, 2005 from wells screened in Unit A were used <br /> to construct the groundwater elevation contour map included as Figure 3 The groundwater flow <br /> direction for Unit A was generally to the east, with a hydraulic gradient of approximately 0 005 feet <br /> per foot (ft/ft) <br /> rGroundwater measurements recorded on April 11, 2005 from wells screened in Unit B were used <br /> to construct the groundwater elevation contour map included as Figure 4 The groundwater flow <br />' direction for Unit B was generally to the east-southeast, with a hydraulic gradient of approximately <br /> 0 004 ft/ft <br />' Groundwater measurements recorded on April 11, 2005 from wells screened in Unit C were used <br /> to construct the groundwater elevation contour map included as Figure 5 The groundwater flow <br /> I .� direction for Unit C was generally to the east, with a hydraulic gradient of approximately 0 003 fttft <br /> Groundwater measurements recorded on April 11, 2005 from wells screened in Unit D were used <br /> to construct the groundwater elevation contour map included as Figure 6 The groundwater flow <br /> direction for Unit D was generally to the southeast, with a hydraulic gradient of approximately <br /> 0 005 ft/ft <br /> The groundwater gradients and directions are similar to previous quarters The overall <br />' groundwater elevation increased approximately 1 foot since January 2005 <br /> Copies of the groundwater sampling information sheets are included as Attachment B <br /> Tabulated results of recent depth to water (DTW) measurements are presented in Table 1 <br /> Groundwater elevations measured to date are presented in Table 2. A table of well <br /> construction details is included as Attachment C <br /> Groundwater Samglina and Analytical Results <br /> Groundwater samples were collected on April 12th through April 15'' and were submitted to <br /> California Laboratory Services (CLS) in Rancho Cordova, California, for analyses of total <br /> • <br /> 0 Celebrating 35 Years of Excellence to Environmental Services <br />