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Superior Precision Anr aa_ytica/, Inc. <br /> 825 Arriold Drive, Suite 114 Martinez, California 94553 • '(510) 229-1512 / fax (5 101 229-1526 <br /> C E R T I F I C A T E O F A N A L S I <br /> LABORATORY NO. : 86975 DATE RECEIVED: 10/23/92 <br /> CLIENT: Kleinfelder DATE REPORTED: 10/30/92 <br /> CLIENT JOB NO. : 24-220165--DOI DATE SAMPLED 10/22/92. <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by MODIFIED EPA SW-846 METHOD 5030 and 8015 <br /> LAB Concentration (mg/kg) <br /> # Sample Identification Gasoline Range <br /> 1 74152 ND<1 <br /> 2 74153 ND<1 <br /> 3 74154 ND< 1 <br /> 4 74155 ND<1 <br /> 5 74156 ND<1 <br /> 6 74157 ND<1 <br /> mg/kg - parts per million (ppm) <br /> Q'IMethod Detection Limit for Gasoline i1ri Soil : 1 mg/kg <br /> QAQC Summary: <br /> Daily Standard run at 2mg/L: RPDIGasoline = <15 <br /> MS/MSD Average Recovery = 96% Duplicate RPD = 9% <br /> Richard Srna, Ph.D. <br /> aboratory Direct <br /> Ce t ed Laboratories <br /> r ifi <br />