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CAM B R l A Ms Vicki McCartney <br /> April 14, 2005 <br /> RECOMMENDATIONS <br /> Groundwater samples from all wells have been analyzed for ethylene dibromide and <br /> 1,2-dichloroethane for five quarters, and none have been detected in any of the wells Therefore, <br /> Cambria recommends that these analyses be discontinued In our SCM mentioned above, <br /> Cambria recommended reducing the sampling frequency of wells MW-1 through MW-6 and <br /> MW-10 to annual We will implement these changes with SJCEHD's concurrence beginning <br /> with the second quarter 2005 sampling event <br /> Cambria also recommended drilling four additional cone penetration test borings in our <br /> October 7, 2004 SCM If SJCEHD concurs with this recommendation, we will submit a work <br /> plan further detailing these activities <br /> HISTORICAL REMEDIATION SUMMARY <br /> iA soil vapor extraction (SVE) system operated at this site from September 1992 to <br /> November 1996 During this time, the SVE system removed approximately 17,628 pounds of <br /> vapor phase total petroleum hydrocarbons as gasoline from the subsurface <br /> 2 <br />