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• . 0 <br /> TABLE 1 - GROUNDWATER MONITORING AND CHEMICAL ANALYTICAL DATA <br /> TOSCO (Former BP) Service Station No 11192 <br /> 1403 Country Club Boulevard <br /> Stockton, California <br /> Total Well' Depth Ground <br /> Well Elev. to Floating Water Ethyl- Total <br /> Sample Sample Depth (ft Water Product Elevation TPHg Benzene Toluene benzene Xylenes MTBEZ MTBE' <br /> No. Date ft.) MSL (ft) {ft.) (ft.MSL} b (Pub) (ppb) (ppb) ( b)) (ppb) b) <br /> MW-11 1014101 7959 5 18 1825 000 -1307 <50 <0 50 <0 50 <0 50 <0 50 280 200 <br /> EXPLANATION- ANALYTICAL LABORATORY, <br /> ft =feet Sequoia Analytical Walnut Creek,ELAP#1271 <br /> ft MSL=feet relative to Mean Sea Level <br /> ppb=parts per billion <br /> I =Well elevations reported as top of casing(TOC)surveyed by Virgil Chavez,Licensed California Land Surveyor No 6323 <br /> 2=MtBE by EPA Method 8020 <br /> 3=MtBE by EPA Method 8260 <br /> ANALYTICAL METHODS: <br /> TPHg=Total Petroleum Hydrocarbons as gasoline according to EPA Method 8015 Modified <br /> Benzene,Toluene,Ethylbenzene,and Total Xylenes according to EPA Method 8020 <br /> MtBE=Methyl tertiary butyl ether according to EPA Method 8020/8260 <br /> I I <br /> I <br /> 140245 06 <br />