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r-NWO[ OO-Tr=CH CERTIFICATE OF ANALYSIS <br /> Ar7alya a a I Laboratory .Tuescla);hfarck 12,.2002 <br /> TO: William Little , <br /> Advanced GeoEnviron mental <br /> 837 Shaw Road <br /> Stockton CA 95215 t <br /> Aromatic Compound in Gasoline by GC/MS i <br /> Sample Information <br /> Sample ID:}14494-01 _ Sample Type: Grab <br /> Sample Description: Tank#1 North End 'Project Name: 4040 E. Main ST. <br /> Date/Time Sampled: 3/6/2002 4:30:00 PM Sample Matrix: Soil <br /> ANALYTICAL RESULT QAIQCREPORT <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Blank LCS% MS% MSD RSD <br /> Conc. Conc. <br /> Benzene EPA 82606 5 ug/kg ND 08-Feb-02 ND 12.8 90.0% 13 97.1% 94.4% 0.7% <br /> Toluene EPA 82608 5 ug/kg ND 08-Feb-02 ND 12.8 90.0% 12.8 100-6% 100.0% 0.2.% <br /> ;..�:.� - �.,....,.. <br /> Ethylbenzene- EPA 8260B 5 Ug/kg ND 08-Feb-02 ND 12.8 W 88.0% 12.8 109.4% 95.2% 3.5% <br /> m,p-Xylene EPA 8260B 5 ug/kg ND 08-Feb=02 ND 25.6 87.5% w25.6 97.2% 97.7% 0.1% ., <br /> EPA 5 uglkg ND ,..:.08-Mar-02 .:Nn. 128. 89.5% ..,. 12.8 96,6.99 <br /> O-Xylene .� /° 98.0% 0.3% <br /> 112-Dichloroethane d4(Surrogate) %Recovery 910% <br /> 4-BFB-(Surrogate) %Recovery 912°/u <br /> ntgfL =milligrruns per 1.tter=ppm RSL)-represent relai we pereent(Jrlferew(RPL))bet}reert duplicates spike Qfsamples <br /> u);1. =rnicroVwms per 1.iter=pp(, or Lhrplicrtte.of Sample <br /> RE''SPE TFUL M " TED, MSIUS'D-measure of alre percent recovery cfJicienries within the mrrNiv <br /> C=C'onrposit8 Ci=Grob , <br /> LCS-measure of the percent recovers of lite Laboraloty Control Spike(LCS) <br /> J sat air Hao V Le, Laboratv►y.DiYeetvr C)I.H-1�cttctrlion Linrit fir the.1'rirpnse nfHeportiog. Erceptionrrl sample <br /> malrices or infoi fereneces may result in higher detection linuts <br /> E'P�I-L'tivirrtnnrenrnl!'rnu:ctran.4gc:ncy M1lethod. Sh1-Strrndrrrd A1<lhorfRu.I'xrrmiruttinn of 1Yatr:r llastesrrrler 18th kd. Page I of 1 <br /> 545 E. Cleveland St. Suite A Stockton, CA 95204 Tel.: (209) 462-0892 Fax: (209) 462-7935 <br />