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CHROMALAB, INC. <br /> . Environmental Services(SSB) - <br /> Apral 9, 1998 Submission # 9803309 <br /> AQUA SCIENCE ENGINEERS INC <br /> ' Atten Charlie Rous <br /> ' Project UNOCAL Protect# 3254 <br /> Received: March 20, 1998 <br /> re One sample for Gasoline BTEX analysis <br /> IMethod SW846 8020A Nov 1990 / 8015Mod <br /> Client Sample ID BH-F@6 . 5 ' <br /> Spl## 176545 Matrix SOIL <br /> Sampled March 19, 1998 Run# 11921 Analyzed April 2 , 1998 <br /> REPORTING BLANK BLANK DILUTION <br /> RESULT LIMIT RESULT SPIKE FACTOR <br /> ANALYTE (mcq/Kcr) (mg/Kq) (M/Ka) (o) _ <br /> GASOLINE 4300 100 N D. 109 10 <br /> BENZENE 12 6 2 N D 88 10 <br /> ' TOLUENE 35 6 2 N D 9S 10 <br /> ETHYL BENZENE 70 6 2 N D 102 10 <br /> XYLENES 390 6 2 N D 96 10 <br /> • Note Su ogate Recoveries biased high due to Hydrocaxbon co-elution <br /> Vincent Vancil Michael. Verona <br /> Chemist Operations Manager <br /> 1 <br /> t� <br /> 1 <br /> 510- -4 <br /> 1220 Quarry Lane• Pleasanton, California 94566-4756 PMV17Go BTEXQCC <br /> (510) 484-1919• Facsimile (510) 484-1096 GAR) <br /> Federal ID #68-0140157 <br />