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`. Superior Precisior7 Ana/ytica/, Inc. <br /> 825 Arnold Drive Suite 114 ■ Martinez California 94553 • (5 l 0) 229 1 51 2 / fax (510' 229 1 526 <br /> C E R T I F I C T E O F <br /> LABOR "TORY `O S'5301 DATE RECEIVED 03/30/92 <br /> CLIE',T ER'1-6�EST DATE REPORTED 04/06/92 <br /> CLiE'vT JOB ',O 1572 04 DATE SAMPLED 03/30/92 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by 'Llodifled EPA SW-846 Method 8015 <br /> LaB Concentration ( mg/kg ) <br /> Y Sample Identification Gasoline Range Diesel mange <br /> ---- <br /> -------------- ------------ <br /> --------------------- <br /> Si \I1q1A 5 0 240 *180 <br /> ? MW1A 7 5 11 **11 <br /> 3 'IW3A 7 5 1200 ND< 10 <br /> 4 k1W3A 15 ND<10 %D< 10 <br /> 5 MW2A 10 ND<10 ND< 10 <br /> P6 MW2A 13 . 5 ND< 10 ND<10 <br /> 7 MW4A 10 ND<10 ND< 10 <br /> 8 MW4A 15 ND< 10 ND< 10 <br /> mg/l.g - tai is per million ( PPm ) <br /> iMethod Detection Limit for Gasoline in Soil 10 m;/kg <br /> 'lethod Detection 1-i-mit for Diesel in Soil 10 mg/kg <br /> QAQC Summary <br /> DazlS Standaid run at 200mg/L RPD Gasoline = < 15 <br /> RPD Diesel = < 15 <br /> IS/,-ISD -\-ti erage Reco-, ery = 100 % Duplicate RPD = 6 <br /> B-Lesel range concentration reported . The pattern of peaks <br /> ubser� ed Ln the chromatogram is typical of gasoline . <br /> Diesel range concentrAtion reported The chromatogram shows <br /> onl, :L single peak in the diesel range <br /> Richard Srna , Ph . D . <br /> ahoratory Director I <br /> iCertified Laboratories <br />