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CERTIFICATE OFANAL.YSIS <br /> .4/7s��,�/t�Ca/ L�L7U,TatOr)/ Trres't!c<<r,March 12,2(1(12 <br /> TO: William Little <br /> Advanced GeoEnvironmental <br /> 837 Shaw Road. <br /> Stockton CA 95215 <br /> Aromatic Compound in Gasoline by GC/MS <br /> Sample Information <br /> Sample ID: 14494-04 Sample Type: Grab <br /> Sample Description: Tank#2 South End Project Name: 4040 E.Main ST. <br /> Date/Time Sampled: 3/6/2002 3:25:00 PM Sample Matrix: Soil <br /> ANALYTICAL RESULT QA/OCREPORT <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Blankone LCS% MS% MSD <br /> one.. . <br /> Benzene EPA 8260E 5 ug/kg ND 08-Feb-02 ND 12.8 90.0% 13y 97,1%0 ­94. 0.7% <br /> Toluene EPA 8260B 5 ug/kg ND 08-Feb-02 ND 12.8 90.0% 12.8 100.6% 100.0% 0-2% <br /> ..., <br /> Ethyl6enzena EPA 826008 5 ug/kg 44$ 08 Feb 02 ND 12.8 88.0% 12.8 109.4% 95.2% 3.5% '? <br /> m p Xylene EPA 8260B 5 ug/kg 2180 08-Feb-02 ND 25.6 87.5% 25.6 97.2.1% 97.7% 0-9.% <br /> o Xylena EPA 8260B 5 uglkg 29 08-Mar-02 ND <br /> . . 12.8 89.5%'. 12.8x9,6...9 <br /> % » 98.0%ry 0.3% <br /> 1,2-Dichlaroethane-d4(Surrogate) /Recovery 105% <br /> -BFB-(Surrogate) %Recovery 104% <br /> a,.a. nr(r <br /> `A ntilligrrnns per Liter=ppm RSD re)n-ovent relative percent dtffererr <br /> 11RPD)between riaplu.rrteses'ss <br /> pike oJ's•anrples. <br /> or Dtgrlicare of Sample <br /> qJoiatDn <br /> C FULL I" BD ugil_=mic'rog�rnrs per Liter=ppb <br /> f hISYh1S'Daneasure of the percent recon ery cf)iciencie.s Tait&1h nt0 _i.s <br /> C:=Composite G=Grab <br /> LC',5'-me°asure of the percent rccvrcry nJ1hF Lctborulory-Control Spike(L(:Sj_ <br /> Hao F: Le, Laboratofy Director L)Lfi-Deteclian I inrir firr the PraFayse o(ReFrorriug l_:viceptional sample <br /> rnr117"1Cc'.c or inter ferenem may result ir1 higher detection liniits <br /> 1 <br /> w._,.,..,... __N.. _.._......-_........_..._._.. _._...._._._,_.... M. .._....� <br /> ........... ....,..- <br /> 1J'.1 Entirronmrrrra!Protccrrvr.igerx) h4eihart S,11-Stantfard Aletharl f wExaminatiota of Water P"as•rewatcr 18111 Fri. Page 1 off <br /> 545 E. Cleveland St. Suite A Stockton, CA 95204 Tel.: (209) 462-0892 Fax: (209) 462-7935 <br />