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4 <br /> w <br /> CERTIFICATE OF ANALYSIS <br /> Analytical Laboratory Ttresrfuj-,March 17, 7fx)2 <br /> TO: William Little <br /> Advanced GeoEnvironmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Total Petroleum in Gasoline <br /> Sample Infin-oration <br /> Sample ID: 14494-03C Sample Type: Grab <br /> Sample Description: Tank#2 North End Project Name: 4040 E.Main ST. <br /> Date/Time Sampled: 3/6/2002 3:40:00 PM Sample Matrix: Soil <br /> ANALYTICAL RESULT QA/QC REPORT <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result 'Analyzed Blank Conc. LCS% Conc. MS% MSD RSD <br /> TPH-Diesel ,._. .. EPA 8015MILUF r 500 ug/kg NO 08-Mar-02 ND a 5000'. 96.0% <.. 5000._ ,:. . ... .... .. <br /> . - 102.4% 104.0% 0.5% <br /> Ing/l., nrilligrarns per Luer—ppm RSD represenI relative percent different(1tPD)between duplicates sprite of samples <br /> ngr7. =micrograms per Luer=p)tb or Duplieate of Sample <br /> REP C FUL B TED, C Composite G Grab <br /> AVVAISD-measure grthe percent recovery efficiencies within the matrix <br /> = = <br /> LCS-measure of 1),e percent recoveq,of the Laboratoni Cartrol Spike(LCS) <br /> DLR-Detection Limit for the Putpose of Reporting. Exceptional snmple <br /> .Io ath It Hao V.Le,.Laboratory Director matrices or interfe rl'n@CCs nrati result in higher detection limits <br /> } <br /> i <br /> 1 <br /> L'1;4 L)rsironmenial Protection Agenry Uethod. Exrnnirurtion of H rater 13irsiet'inter 18ili Eel. Pose 1 of 1 <br /> 545 E. Cleveland St. Suite A Stockton, CA 95204 Tel.: (209) 462-0892 Fax: (209) 462-7935 <br />