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CHRQMALAB, INC. <br /> Environmental Services(SDB) _ - - <br /> ' March 31, 1998 Submission # 9803309 <br /> AQUA SCIENCE ENGINEERS INC <br /> ' Atten Charlie Rous <br /> Pro?ec t UNOCAL Pro_7 ec t# 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 /> CI i ere t Sample ID BH-G@6 51 <br /> ' Spl# 176546 Matrix SOIL <br /> Sampled March 19 , 1998 Run# 11898 Analyzed March 23 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> RESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE ugKS (ug/KS _ uqKg o <br /> TERTIARY BUTYL ALCOHOL (TBA) N D 25 N D -- - 5 <br /> METHYL TERTIARY BUTYL ETHER 40 25 N D 972 5 <br /> (MTBE) <br /> DI-ISOPROPYL ETHER (RIPE) N D 50 N D - 5 <br /> ETHYL TERTIARY BUTYL ETHER N D 25 N D - - 5 <br /> (ETBE) - - <br /> TERTIARY AMYL METHYL ETHER N D 25 N D 5 <br /> (TAME) <br /> Note Reporting limits raised due to matrix interference <br /> Fez //�4"Z <br /> Michael Lee Michael Verona <br /> ' Chemist Operations Manager <br /> 1 <br /> • <br /> 510-837-4853 PM 03127 i220' QuarryLane • Pleasanton California 94566-4756 V060 0 QC0405 Mik1FE it <br /> (510) 484-1919• Facsimile (510) 484-1096 <br /> Federal 1D #68-0140157 <br />