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Superior Precision ,o"a6l cal, Inc. <br /> 825 Arnold Drive Suite 1 14 • Martinez California 94553 • (5 101 229-1512 / fax (5 10) 229-1526 <br /> i <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. : 85600 DATE RECEIVED: 04/28/92 <br /> CLIENT: Golden West Builders DATE REPORTED: 05/06/92 <br /> CLIENT JOB NO. : NA DATE SAMPLED : 04/27/92 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-846 Method 8015 <br /> LAB Concentration (mg/kg) <br /> # Sample Identification Diesel Range <br /> 1 P3 5 ' ND<10 <br /> 2 P3 10 ' ND<10 <br /> 3 P3 15 ' ND<10 <br /> 4 P3 20 ' 12* <br /> 5 P3 25 ' ND< 10 <br /> 6 P3 30 ' ND<10 <br /> 7 P3 35 ' ND<10 <br /> 8 P3 40 ' ND<10 <br /> 9 P2 40 ' 3100* <br /> i 10 PL 5 ' ND<10 <br /> 11 P1 10 ' ND< 10 <br /> 12 P1 15 ' ND<10 <br /> 13 P1 20 ' ND<10 <br /> 14 P1 25 ' 18* <br /> 15 P2 5 ' ND<10 <br /> 16 P2 10 ' ND<10 <br /> 17 P2 15 ' ND<10 <br /> 18 P2 20 ' 64* <br /> 19 P2 25 ' 390* <br /> 20 P230 ' 1200* <br /> 21 P2 35 ' 2000* <br /> * Diesel range concentration reported. A non-standard diesel <br /> pattern was observed in the chromatogram. <br /> mg/kg - parts per million (ppm) <br /> Method Detection Limit for Diesel in Soil: 10 mg/kg <br /> QAQC Summary: <br /> Daily Standard run at 200mg/L: RPD Gasoline = NA <br /> RPD Diesel = 4 <br /> MS/MSD Average Recovery = 96/95% : Duplicate RPD = 1 <br /> Richard'Srna Ph.D. <br /> Laboratory Director <br /> CerrRfied L3acraiones <br />