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TatjmW <br /> Groundwater Monitoring wand Analytical Results <br /> Chevron Service Station#9-1452 <br /> 334 East Main Street <br /> Ripon,California <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to November 29,2001,were compiled from reports prepared by Blaine Tech Services,Inc <br /> TOC=Top of Casing TPH-G�Total Petroleum Hydrocarbons as Gasoline (ppb)=Parts per billion <br /> (ft)=Feet B=Benzene --=Not MeasuredlNot Analyzed <br /> i <br /> DTW=Depth to Water T=Toluene ND=Not Detected <br /> (ms])=Mean Sea Level E=Ethylbenzene QA=Quality Assurance/Trip Blank <br /> GWE=Groundwater Elevation X=Xylenes <br /> TPH-D=Total Petroleum hydrocarbons as Diesel MTBE=Methyl tertiary butyl ether <br /> * TOC elevations are reference to ms] TOC elevations were resurveyed by Morrow Surveying on April 14,2003 Elevations are based on USGS benchmark H-1413, <br /> (Benchmark Elevation=71 71 feet,NAVD 88) <br /> 13TEX and MTBE by EPA Method 8260 <br /> Wel]development performed <br /> I <br /> I <br /> 9-1452 xls/#386582 6 As of 08/11/03 <br />