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r � W M aM = M M M <br /> Groundwater Monitoring Wand Analytical Results <br /> Tosco(Unocal) Service Station#5886 <br /> 2701 West March Lane <br /> Stockton,California <br /> X A ONS(cont): <br /> i <br /> B Instrument continuing calibration failed Since silica cleanup was requested on diesel has,the sample was not renin The results should be considered estimated values <br /> 16 Laboratory report mdhcates MTBE reported from a second run dilution <br /> 17 Laboratory report indicates this sample was analyzed out the EPA recommended holding time <br /> 18 MTBE by EPA Method 8260 was originally analyzed within holding time Re-analysis for confirmation or dilution was performed past the recommended holding time <br /> I <br /> Note Wells designated as"S"are screened in the shallow zone,wells designated as"I"are screened in the intermediate zone,and wells designated as"D"are <br /> screened in the deep zone <br /> I <br /> 5886 alst#180137 <br /> 13 <br /> As of 11117/00 <br /> 1 <br />