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CHRQMALAB, INC. <br /> Environmental Services (SDB) <br /> ' April 9, 1998 Submission #- 9803309 <br /> AQUA SCIENCE ENGINEERS INC <br /> Atten Charlie Rous <br /> ' Pro3ect UNOCAL Pro3ect# 3254 <br /> Received March 20, 1998 <br /> re One sample for Gasoline BTEX analysis <br /> Method SW846 8020A Nov 1990 / 8015Mod <br /> Client Sample ID BH-H <br /> Spl# 176539 Matrix WATER <br /> Sampled March 19 , 1998 Run# 11971 Analyzed April 2 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> ' RESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE (ug/L) (uq/L) (ucr/L) M _ <br /> GASOLINE 9500 250 N D 115 5 <br /> ' BENZENE 410 2 5 N D 89 5 <br /> TOLUENE 4 9 2 5 N D 89 5 <br /> ETHYL BENZENE 32 2 5 N D 86 5 <br /> XYLENES 9 6 2 5 N D 85 5 <br /> ' Vincent Vancil Michael Verona <br /> Chemist Operations Manager <br /> 1 <br /> 1 <br /> 1 <br /> 1220 Quarry Lane • Pleasanton, California 94566-4756 pM ui3z 0 BTEXOCO <br /> ' GbRY t <br /> (510) 484-1919• Facsimile (510) 484-1096 <br /> Federal ID #68-0140157 <br />