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CHRQMALAB, INC. <br /> Environmental Services(SDB) <br /> jApril 2 , 1998 Submission # 9803309 <br /> AQUA SCIENCE ENGINEERS INC <br /> ' Atten Charlie Rous <br /> 1Project UNOCAL Project#. 3254 <br /> Received March 20, 1998 <br /> ' re One sample for Gasoline BTEX analysis <br /> Method SW846 8020A Nov 1990 / 8015Mod <br /> CI i en t Sample ID BH-D <br /> Spl# 176535 Matrix WATER <br /> Sampled March 19, 1998 Run# 11922 Analyzed April 2 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> ' RESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE _ _ (ug/L) (uq/L) (ug/L)___-_--(%) <br /> GASOLINE 94000 2500 N D 94 50 <br /> BENZENE 2000 25 N D 92 50 <br /> TOLUENE 110 25 N D 95 50 <br /> ETHYL BENZENE 5700 25 N D 101 50 <br /> XYLENES 4300 25 N D 91 50 <br /> Vincent Vancil Michael Veron <br /> Chemist Operations M ger <br /> r <br /> 510-837-4853 <br /> ' 1220 Quarry Lane • Pleasanton, California 94566-4756 PMvtasO BTEXQCO2 <br /> (510)484-1919 • Facsimile(510) 484-1096 °INCE'` <br /> Federal ID #68-0140157 <br />