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Table 1 <br /> Groundwater Monitoring DA&nd Analytical Results <br /> Chevron Service Won#9-3232 <br /> 8660 Lower Sacramento Road <br /> Stockton, California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to June 22,2000,were compiled from reports prepared by Blaine Tech Services, Inc <br /> TOC=Top of Casing TPH-G=Total Petroleum Hydrocarbons as Gasoline MTBE=Methyl tertiary butyl ether <br /> (ft)=Feet B=Benzene (ppb)=Parts per billion <br /> GWE=Groundwater Elevation T=Toluene --=Not Measured/Not Analyzed <br /> (msl)=Mean sea level E=Ethylbenzene QA=Quality Assurance/Trip Blank <br /> DTW=Depth to Water X—Xylenes NP=No Purge <br /> * TOC elevations were resurveyed in April of 2002 by Morrow Surveying Elevations are based on San Joaquin County Benchmark No IN-6 Brass disk <br /> in well at Thornton and Davis Roads(Benchmark Elevation= 14 43 feet) <br /> ' TOG elevation changed due to well head maintenance <br /> Z MTBE by EPA Method 8260 <br /> 3 Laboratory report indicates gasoline C6-C12 <br /> 4 Laboratory report indicates unidentified hydrocarbons C6-C12 <br /> 5 TQC has been altered <br /> 6 Well development performed <br /> BTEX and MTBE by EPA Method 8260 <br /> B TOC was incorrectly presented as 13 73 feet in previous report GWE has been updated <br /> I <br /> 9-3232 cls/4386463 9 As of 07/01/05 <br />