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CHROMALAB, INC. <br /> ' Environmental Services(SDB) <br /> March 31, 1998 Submission # 9803309 <br /> j AQUA SCIENCE ENGINEERS INC <br /> Atten Charlie Rous <br /> Project UNOCAL Project#: 3254 <br /> Received March 20, 1998 <br /> re One sample for Fuel Oxygenates by GC/MS analysis <br /> Method EPA SW846 Method 8260 Modified <br /> Client Sample ID BH-H <br /> Spl# 176539 Matrix WATER <br /> Sampled March 19 , 1998 Run## 11766 Analyzed March 21 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> RESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE (ug/L (ug/L u L <br /> TERTIARY BUTYL ALCOHOL (TBA) N D 1000 N D --- 200 <br /> METHYL TERTIARY BUTYL ETHER N D 1000 N D 90 0 200 <br /> (MTBE) <br /> DI-ISOPROPYL ETHER (DIPE) N D 2000 N D - - <br /> 200 <br /> ETHYL TERTIARY BUTYL ETHER N D 1000 N D - - 200 <br /> (ETRE) <br /> TERTIARY AMYL METHYL ETHER N D 1000 N D -- 200 <br /> (TAME) <br /> to Reporting limits raised due to matrix interference <br /> Michael Lee &ha,1AVerona <br /> ' Chemist Operations Manager <br /> r <br /> • <br /> 510--8 3 7-4 8 5 3 QM 6387 1220' QuarryLane• Pleasanton, California 94566-4756 v060 0 000495 MINIEE I I <br /> (510) 484-1919 • Facsimile (510) 484-1096 <br /> Federal ID #68-0140157 <br />