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TABLE 3 1 GROUNDWATER EXTRACTION SYSTEM ANALYTICAL DATA Former Chevron Service Station 9-5775 301 West Kettleman Lane Lodi, California i Sample Sample TPHg Benzene Toluene Ethyl- Total MtBE TBA DIPE EtBE TAME Ethanol Methanol EDB 1,2 -DCA Date Location benzene Xylenes L L L L L L L l - L /L L L L 06/04/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 06/11/02 EFFL <50 <0.5 0.60 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 06/18/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 06/25/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 07/02/02 EFFL <100 <20 <20 <20 <20 <20 <10 <20 <20 <20 <50 <100 <20 <20 07116102 EFFL <100 <20 <20 <20 c 20 <20 <10 <20 <20 <20 <60 <100 <20 <20 07/30/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 08/13/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 08/28/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 09/12/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 09/24/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 10/08/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 10/22/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 11/05/02 EFFL <50 <0.5 <0.5 <0.5,. <0.5 <2 <10 <2 <2 <2 <100 <400 <2 <2 11/20/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 12/03/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 12/17/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 01/07/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 01/21/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 02104/03 EFFL <100 <2 <2 <2 <2 <2 <i0 <2 <2 <2 <100 <400 <2 <2 02/19/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 03/05/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 03/18/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 04101/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 1115103 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 5106103 EFFL <50 10.5 <0.5 <0.5 <0.5 <0.5 <5. <0.5 <0.5 <0.5 <50 <400 <0.5 <0.5 05/20/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 06/05/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 06/18/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 07/14/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 08/20/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 09/16/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 90/22/03 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <10 <0.5 <0.5 <0.5 <100 <400 <2 <0.5 11/14/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 12/11/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 01/19/04 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 02/09104 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 03/09104 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 Discharge Limitation ND <51 <51 <51 <51 ND ND ND ND ND ---- - EMLANATIONS- ANALYTICAL LABORAT4f31_FS ugA = micrograms per liter On - Effluent TPHg = Total Petroleum Hydrocarbons as Gasoline DIPS = Di -isopropyl ether Sequoia Analytical (ELAP #1271, #1624 and 012360) 1,2-DCA=1,2-Dichloroethane EtBE = Ethyl tertiary butyl ether Kiff Analytical (ELAP #2236) MtBE= Methyl tertiary butyl ether TAME = Tertiary amyl methyl ether Lancaster Laboratories (ELAP # 2116) TBA = lert-Butyl-alcohol NA = Not analyzed for this constituent EDB = 1,2-Dibro methane ND = Not Detected or below method detection limits NOTES- ' Sum of benzene, toluene, ehtylbenzene and xylenes not to exceed 0.005 mg/L (5 ppb). x Sample collected after approximately 1,400 gallons of tap water was pumped through system during cleaning procedures. a Sample included 2-butanacne and tetrahydrofuran which were quantified as TPHg. SSerclv,IMcretl Mia waaadMv t,5009IW,aMUPww virpunpetl Mwrplr apmrn Aui9 de�,iq gocMuru. Teh�hydrMurn rePahAw N(J I<51 s Split sample collected for Qualitative analysis (Kill Analytical) c Split sample collected for Qualitative analysis (Lancaster Laboratories) = 11ChevrON957757Tabl es/Gwe-q pr.xls 12 of 12