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4pC AM B R I A <br /> be developed due to a bulge in the casing at approximately <br /> 3 5 fbg causing the well to be inaccessible Blaine developed <br /> the other three wells using surge block agitation and pump <br /> evacuation Blaine sampled the site wells (excluding well MW- <br /> 3-119) on November 7,2005. Blaine's report, documenting the <br /> development and sampling events for all wells, is included in <br /> Appendix D <br /> Wellhead Survey• Since well MW-3-119 will need to be repaired and the casing <br /> elevation may change during these activities, Cambria will <br /> coordinate a survey of the horizontal locations and top of casing <br /> elevations of the newly installed monitoring wells after the <br /> repair of well MW-3-119 is complete <br /> HYDROCARBON DISTRIBUTION IN SOIL <br /> No TPHg or benzene was detected in soil samples collected from well boring MW-10-117 at 10, <br /> • 20, 30, 50, 110, and 120 fbg TPHg was detected in well boring MW-10-117 at 60 and 80 fbg at <br /> concentrations up to 4 5 ppm. Benzene was detected in well boring MW-10-117 at 60, 80, and <br /> 90 fbg at concentrations up to 12 ppm <br /> The soil analytical data are summarized in Table 2, and the TPHg and benzene results are <br /> presented on Figure 2 The certified analytical reports for these soil samples are presented in <br /> Appendix C <br /> HYDROCARBON DISTRIBUTION IN GROUNDWATER <br /> Cambria prepared a groundwater contour/chemical concentration map for the shallow <br /> groundwater zone(Figure 3)and groundwater elevation/chemical concentration maps for the two <br /> deeper water-bearing zones (Figures 4 and 5) Groundwater sampling at the subject site was <br /> coordinated with sampling at the Chevron service station(508 West Charter Way)and the former <br /> Arco service station (441 West Charter Way) on November 7, 2005 As of the date of this <br /> report, the Chevron data has not yet been received from their consultant Due to the lack of <br /> applicable groundwater data from the Arco site, and the orientation of the Shell wells, <br /> groundwater contours were not prepared for the two deeper zones Laboratory analytical and <br /> groundwater elevation data from the Arco site is included as Appendix E <br /> 1399 6 <br />