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' COLUMBIA ANALYTICAL SERVICES, INC. <br /> Analytical Report <br /> client ' I1 CO Products Collipanv Service Request. 59700344 <br /> Prolef-t 2 168 STOCKTON/21775-234 002/TO##I9350 00 Date Collected: 2124/97 <br /> S.tmple Mat,ix 11 iter Date Received: 2/27/97 <br /> Date Extracted: NA <br /> BTI=X MTBE and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUIFT Method <br /> Units ug/L (ppb) <br /> Sample Name MW-7 (47) Method Blank <br /> Lab Code 59700344-007 5970228-WBI <br /> Date Analyzed 2/28/97 2128/97 <br /> Analvte MRL <br /> TPH as Gasoline 50 25 000 ND <br /> Benzene 0 5 L,300 ND <br /> Toluene 05 3,700 ND <br /> Ethvlbenzene 05 500 ND <br />. Total Xvlenes 0 5 2,200 ND <br /> Methvi tort-Buts t Ether 3 <700 MI ND <br /> Ml The MRL i% is elegy ated because of matrix interferences <br /> i�220o01)l <br /> Page 6 <br />