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CHROMALAB, INC. <br /> Environmenlal Services(SDB) <br /> Apr3-1 9, 1998 Submission #- 9803309 <br /> AQUA SCIENCE ENGINEERS INC <br /> Atten: Charlie Rous <br /> Prolect UNOCAL Pro]ect# 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-B <br /> Spl# 176533 Matrix WATER <br /> Sampled March 19, 1998 Run# 11.971 Analyzed April. 2 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> ' RESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE (ug/L) (ug/L) (ug/L) (o) <br /> GASOLINE 39000 500 N D 115 10 <br /> BENZENE 64 5 0 N D 89 10 <br /> TOLUENE 23 5 0 N D 89 10 <br /> ETHYL BENZENE 360 5 0 N D 86 10 <br /> X>incent <br /> ES 43 5 0 N D 85 10 <br /> lie <br /> ' Vancil Michael Verona <br /> Chemist Operations Manager <br /> 1 <br /> 510-937-4851 <br /> 1220 Quarry Lane • Pleasanton, California 94566-4756 PMV1320 BTEXocc <br /> ' (510) 4$4-1919• Facsimile (510) 484-1096 GM <br /> Federal ID #68-0140157 <br />