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r r <br /> TABLE 2 <br /> CHEMICAL ANALYSIS - GROUNDWATER <br /> Diesel Performance <br /> Stockton, California <br /> (Page 3 of 3) <br /> Sample Date MTBE B T E X TPHg TPHk TPHd <br /> ID <br /> ug/I ug/l ug/1 ug/I Ug/1 ug/1 ug/1 ug/I <br /> MW5 12/12/01 <2 0141 <05 <05 <06 <1 0 <50 <50 <50 <br /> 10/25/02 <2 014} <05 <05 <0 5 <1 0 <50 <50 <50 <br /> 01/23/03 <2 0141 <05 <0 5 <05 <1 0 <50 <50 <50 <br /> 04/07/03 <2 0141 <06 <05 <05 <1 0 <50 <50 <50 <br /> 07/09/03 <2 0141 <05 <05 <05 <1 0 <50 <50 <50 <br /> MW6 12/12/01 <2 014} <05 <05 <05 <1 0 <50 <50 <50 <br /> 10/25/02 <2 0143 <05 <0 5 <05 <1 0 <50 <50 <50 <br /> 01/23/03 <2 0143 <05 <0 5 <05 <1 0 <50 <50 <50 <br /> 04/07/03 <2 0141 <05 <05 <05 <1 0 <50 <50 <50 <br /> 07/09/03 <2 0141 <05 <0 5 <05 <1 0 <50 <50 <50 <br /> MW7 12/12/01 <2 0141 <05 <0 5 <0 5 <1 0 <50 <50 <50 <br /> 10/25/02 <2 014} <05 <0 5 <05 <1 0 <50 <50 <50 <br /> 01/23/03 <2 014} <05 <0 5 <0 5 <1 0 <50 <50 <50 <br /> 04/07/03 <2 014} <05 <05 <05 <1 0 <50 <50 <50 <br /> 07/09/03 <2 0141 <05 <0 5 <0 5 <1 0 <50 <50 <50 <br /> CPT1 12/13/01 <2 0f41 <05 <0 5 <0 5 <1 0 <50 <50 <50 <br /> MCLs 130 1 0 150 700 1,750 NE NE NE <br /> NOTES <br /> ugh - Micrograms per liter = Parts per Billion (ppb) <br /> MTBE = Methyl Tertiary Butyl Ether by EPA Method 8260 or 8260E <br /> B = Benzene by EPA Method 8020 or 8021B <br /> T = Toluene by EPA Method 8020 or 8021 B <br /> E = Ethylbenzene by EPA Method 8020 or 80218 <br /> X = Xylenes by EPA Method 8020 or 8021 B <br /> TPHg = Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015 or 8015B <br /> TPHk = Total Petroleum Hydrocarbons as Kerosene EPA Method 6015 or 8015B <br /> TPHd = Total Petroleum Hydrocarbons as Diesel by EPA Method 8015 or 80158 <br /> NE = None Established <br /> NA = Not Analyzed for that constituent <br /> < _ Not Detected at or Above Stated Method Detection Limit <br /> 1 = Sample analyzed by 8260 for fuel oxygenates including Ethanol, t-Butanol, D1-Isopropyl Ether, Ethyl t-Butyl Ether, <br /> — and t-Amyl Methyl Ether These fuel oyxgenates were below method detection limits <br /> 2 Unidentified hydrocarbon, see laboratory report <br /> 3 Overlapping chromatogram patterns, see laboratory report <br /> 4 = Sample analyzed by 8260B for fuel oxygenates including t-Butanol, D1 isopropyl Ether, Ethyl t-Butyl Ether, <br /> t-Amyl Methyl Ether, 1 2-Dlchloroethane, and ,2-Dibromoethane These fuel oyxgenates were below method <br /> detection limits <br /> W,625771TABLEG',wat-TABL DOC [8r 19/2003] <br />