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CHRQMALAB, INC. <br /> Environmental Services(SDB) - <br /> April. 2 , 1998 Submission # 9803309 <br /> AQUA SCIENCE ENGINEERS INC <br /> Atten Charlie Rous <br /> ' Project. UNOCAL Pro]ect# 3254 <br /> Received March 20, 1998 <br /> re One sample for Gasoline BTEX analysis <br /> Method SW846 8020A Noir 1990 / 8015Mod <br /> Cl i en t Sample ID BH-A@6 . 51 <br /> Spl# 176540 Matrix SOIL <br /> Sampled March 19, 1998 Run# 11921 Analyzed April 1 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> IRESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE (mg/K (mg/K m K o <br /> GASOLINE 640 20 N D 109 2 <br /> BENZENE 9 8 1 2 N D 88 2 <br /> TOLUENE 4 0 1 2 N D 95 2 <br /> ETHYL BENZENE 9 . 7 1 2 N D 102 2 <br /> XYLENES 3 1 1 2 N D 96 2 <br /> lie <br /> ' Vincent Vancil Michael Veron <br /> Chemist Operations Manager <br /> • <br /> 510-837-4853 <br /> ' 1220 Quarry Lane • Pleasanton, California 94566-4756 PMvinO BTEXQCO2 <br /> (510) 484-1919• Facsimile (510) 484-1096 "NCE It <br /> Federal ID #68-0140157 <br />