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TABLE 1 - GRAB GROUNDWATER SAMPLE CHEMICAL ANALYTICAL DATA <br /> Tosco (76) Service Station No.11195 <br /> 16500 South Interstate 5 <br /> Lathrop, California <br /> Ethyl- Total <br /> Sample Sample TPHg Benzene Toluene benzene Xylenes MTBE' MTBE2 Ethanol TBA DIPE ETBE TAME 1,2-DCA EDB <br /> No. Date (ppb) (ppb) (Ppb) (ppb) (ppb) (Ppb) (ppb) (Ppb) (ppb) (ppb) (Ppb) (ppb) (Ppb) (ppb) <br /> B-1 2125102 <50 <0.50 <0.50 <0.50 <0.50 130 95 <500 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <br /> B-2 2125102 <50 <0.50 <0.50 <0.50 <0.50 6,100 10,000 <25,000 <1,000 <100 <100 <100 <100 <100 <br /> B-3 2/25102 <50 <0.50 <0.50 <0.50 <0.50 <2.5 <2.0 <500 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <br /> B-4 2125102 <50 <0.50 <0.50 <0.50 <0.50 12 25 <500 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <br /> B-5 2125102 <50 <0.50 <0.50 <0.50 2.8 6.2 3.0 <500 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <br /> EXPLANATION: ANALYTICAL LABORATORY: <br /> ppb=parts per billion Sequoia Analytical,Walnut Creek(ELAP#1271) <br /> =MTBE by EPA Method 8021 <br /> Z=MTBE by EPA Method 8260B <br /> <50=Samples not reported at or above the laboratory reporting limit. <br /> ANALYTICAL METHOD: <br /> TPHg=Total Petroleum Hydrocarbons as gasoline by EPA Method 8015 modified <br /> Benzene,Toluene,Ethylbenzene and Total Xylenes by EPA method 8021 <br /> MTBE=Methyl tert-butyl ether by EPA Method 8021/8260B <br /> Ethanol by EPA Method 8260B <br /> TBA=tert-Butyl alcohol by EPA Method 8260B <br /> DIPE=Di-isopropyl ether by EPA Method 8260B <br /> ETBE=Ethyl tert-butyl ether by EPA Method 8260B <br /> TAME=tert-Amyl methyl ether by EPA Method 8260B <br /> 1,2-DCA=1,2-Dichloroethane by EPA Method 8260B <br /> EDB=Ethylene dibromide by EPA Method 8260B <br /> 140193.11. <br />