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{ <br /> Table 1 <br /> Groundwater Monitoring Data and Analytical Results <br /> I Tosco(Circle K)Unit#08671 <br /> 11 8606 Thornton Road <br /> I f - I <br /> Stockton,California <br /> I EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to May 14, 1949,were compiled from reports prepared by Secor International,Inc <br /> TOG=Top of Casing TPH-G� Total Petroleum Hydrocarbons as Gasoline (ppb)=Parts per billion <br /> }=Feet B BenzeneNot Measured/Not Analyzed <br /> (ft <br /> DTW=Depth to Water T 1=Toluene ND = Not Detected <br /> S I =Screen Interval E L}Ethylbenz�i]benzene QA=Quality Assurance/Tnp Blank <br /> (ft bgs)=Feet Below Ground Surface X=Xylenes <br /> GWE=Groundwater Elevation MTBE 1Ii Mettilyl tertiary butyl ether i <br /> (msl)=Mean sea level I{ f <br /> I <br /> * TOC elevations are based on City of Stockton Benchmark#8 A brass disk in monument box marking the east 114 corner of section$Township to North range 6 East <br /> MTBE by EPA Method$260 1' I <br /> _ Laboratory report indicates gasoline C6-C12 Ij <br /> Laboratory report indicates unidentified hydrocarbons Cb-G12,, ! 4 <br /> 4 Data provided by Secor International,Inc <br /> 5 TPH-G and BTEX by EPA Method 8260 <br /> I , <br /> 6 TPH-G,BTEX and MTBE by EPA Method 8260 +� <br /> Laboratory report indicates a hydrocarbon pattern is present in the requested fuel quantitation range but does not resemble the pattern of the requested fuel <br /> I <br /> I, <br /> ii I I <br /> 'j <br /> I> I <br /> i I ti <br /> I <br /> I <br /> 4 <br /> I ' <br /> J. <br /> I I , <br /> 08671 x1so198 r �',I . i AO/14/03 <br />