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1455 McDowell Blvd. North,Ste. D <br /> Sequoia Petaluma,CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX(707) 792-0342 <br /> �,,, F <br /> Cambria Environmental Project: Shell Oil Co. Sampled: 8/11/99 to 8/12/99 <br /> 270 Perkins St. Project Number: 440 W Charter,Stockton Received: 8/13/99 <br /> Sonoma,CA 95476 Project Manager: Aubrey Cool Reported: 8/20/99 <br /> Total Petroleum Hydrocarbons as Diesel&others by EPA 8015M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 9080353 Date Prepared: 8/16/99 Extraction Method: CA LUFT-orb shaker <br /> Blank 9080353-BLKI <br /> Diesel(C10-C24) 8/17/99 ND mg/kg 5.00 <br /> Surrogate: o-Terphenyl 113.33 3.13 50.0-150 94.0 <br /> LCS 9080353-BS1 <br /> Diesel(C10-C24) 8/17/99 33.3 30.3 mg/kg 50.0-150 91.0 <br /> Surrogate: o-Terphenyl 113.33 3.27 50.0-150 98.2 <br /> Matrix Spike 9080353-MSI P908317-04 <br /> Diesel(C10-C24) 8/17/99 33.3 ND 30.4 mg/kg 50.0-150 91.3 <br /> Surrogate: o-Terphenyl " 3.33 2.58 50.0-150 77.5 <br /> Matrix Spike Duo 9080353-MSD1 P908317-04 <br /> Diesel(C10-C24) 8/17/99 33.3 ND 31.6 mg/kg 50.0-150 94.9 35.0 3.87 <br /> Surrogate: o-Terphenyl 3.33 2.94 50.0-150 88.3 <br /> Sequoia Analytical-Petaluma *Refer to end of report for cert of notes and definitions. <br /> Page 12 of 16 <br />