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Sequoia 1455 McDowell Blvd North,Ste D <br /> Petaluma CA 94954 <br /> Analytical <br /> �,� {707) 792-1865 <br /> FAX(707) 792-0342 <br /> 0 <br /> Cambria Environmental Project Equiva 10d Sampled 1216199 <br /> 270 Perkins St Project Number 2494 Fremont St,Stockton,Ca Received 1217199 <br /> Sonoma,CA 95476 Project Manager Bob Perlowski Reported 12/20/99 <br /> Total Petroleum Hydrocarbons as Gas6line and f3TEX by EPA 8015M18020M/Quality Control - µ ' <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Linuts % Limit % Notes* <br /> Batch 9120351 Date Prepared 12/15/99 Extraction Method EPA 5030 soils <br /> Blank 9120351-BLKI <br /> Gasoline 12/15/99 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> Surrogate a,a,a-Trifluorotoluene 0 600 0 516 650-135 860 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 652 650-135 109 <br /> LCS 9120351-BSI <br /> Gasoline 12/15/99 200 2 17 mg/kg 65 0-135 109 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 657 650-135 109 <br /> I1Wx Spike 9120351-MSI P912328-01 <br /> ohne 12/15/99 200 ND 1 56 mg/kg 65 0-135 78 0 <br /> Surrogate 4-Bromofluorobenzene Pf 0 600 0 419 fo 650-135 69 8 <br /> Matrix Strike Duo 9120351-MSD1 P912328-01 <br /> Gasoline 12/15/99 200 ND 1 60 mg/kg 650-135 800 20 0 2 53 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 405 650-135 675 <br /> ota Analytical-Petaluma *Refer to end of report far text of notes and definitions <br /> Page 4 of 5 <br />