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B <br />Superior Precision / ■nab ca®, Inc. <br />h' 825 Arnold Drive, Suite 1 14 • Martinez, California 9455-3/ • (510) 229-1512 / fax (510) 229-1526 <br />C E R T I F I C A T E O F A N A L Y S I S <br />LABORATORY NO.: 85608 <br />CLIENT: Kleinfelder <br />CLIENT JOB NO.: 24-220152-B00 <br />DATE RECEIVED: 04/28/92 <br />DATE REPORTED: 04/29/92 <br />DATE SAMPLED : 04/28/92 <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 />---- --------------------- -------------- <br />1 70984W ND<l <br />2 70985E ND<l <br />3 70986W ND<1 <br />4 70987E ND<l <br />mg/kg - parts per million (ppm) <br />Method Detection Limit for Gasoline in Soil: 1 mg/kg <br />QAQC Summary: <br />Daily Standard run at 2mg/L: RPD Gasoline = <15 <br />MS/MSD Average Recovery = 102%: Duplicate RPD = 3 <br />Richard Srna, Ph.D. <br />Laboratory Director j <br />Cerilfieti I.,ihc�r<jlorie; <br />