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I <br /> s� <br /> COLUMBIA ANALYTICAL SERVICES, INC - <br /> Analytical Report <br /> Plent ARCO Products Company Service Request- S9600779 <br /> roject 2I68 STOCKTON/21775-234 0021TO#19350 00 Date Collected 5115196 <br /> Sample Matrix Water Date Received. 5116196 <br /> Date Extracted NA <br /> BTEX MTBE and TPH as Gasoline <br /> EPA Methods 5030/8020/Calsforma DHS LUFT Method <br /> Units ug/L (ppb) <br /> Sample Name MW-1 (53) MW-2 (53) MW-3 (53) <br /> Lab Code 59600779-001 59600779-002 S9600779-003 <br /> Date Analyzed 5/21/96 5/23/96 5121/96 <br /> 3-nalVte MRL <br /> TPH as Gasoline 50 34,000 16,000 40,000 <br /> Benzene 0 5 9,400 2,600 12,000 <br /> Toluene 0 5 670 1,000 690 <br /> Ethvlbenzene 0 5 1,000 210 2,000 <br /> 0 Total Xvlcnes 0 5 2,100 910 1,300 <br /> %lethvl tort-Butvi Ether 3 <25* <200** <500* <br /> Raised MRL due to high analvte concentration requiring sample dilution <br /> Raised MRL due to matrix interference <br /> ZZ.D60194 <br /> Page 4 <br />