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Sequoia 1455 McDowell Blvd North, Ste D <br /> Petaluma CA 94954 <br /> 4 (707)792-1865 <br /> (D Analytical FAX(707) 792-0342 <br /> Cambna Environmental Project Shell Oil Co Sampled 8/11199 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 Gasoline and BTEX by EPA 8015M/8020M/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 % Motes* <br /> Batch 9080398 Date Prepared_ 8/17/99 Extraction Method EPA 5030 soils <br /> Blank 9080398-BLK1 <br /> Gasoline 8117/99 ND mg/kg 0 400 <br /> Benzene ND 000200 <br /> Toluene ND 000200 <br /> Ethylbenzene ND 000200 <br /> Xylenes(total) ND 000400 <br /> Methyl tert-butyl ether ND 00100 <br /> Surrogate a a a-Trifluorotoluene 0 300 0 328 650-135 109 <br /> Surrogate 4-Bromofluorobenzene 0 300 0 272 650-135 90 7 <br /> Blank 9080398-BLK2 <br /> Gasoline 8/18/99 ND mg/kg 0 400 <br /> Benzene ND 000200 <br /> Toluene ND 000200 <br /> Ethylbenzene ND 000200 . <br /> Xylenes(total) ND 000400 <br /> Methyl tert-butyl ether ND 00100 <br /> Surrogate a,a,a-Trifluorotoluene 0 300 0 342 650-135 114 <br /> Surrogate 4-Bromofluorobenzene 0 300 0 275 650-135 91 7 <br /> Blank 9080398-BLK3 <br /> Gasoline 8119/99 ND mg/kg 0 400 <br /> Benzene ND 000200 <br /> -Toluene <br /> 00200 <br /> Toluene -- - T - - - - -_ - - - -- ND- -- = 000200 -- --- - - - -�_ <br /> Ethylbenzene ND 000200 <br /> Xylenes(total) ND 000400 <br /> Methyl tert-butyl ether ND 00100 <br /> Surrogate a,a a-Trifluorotoluene 0 300 0 335 650-135 112 <br /> Surrogate 4-Bromofluorobenzene 0 300 0 278 650-135 92 7 <br /> LCS 9080398-BSI <br /> Benzene 8/17/99 0200 0205 mg/kg 650-135 102 <br /> Toluene 0200 0205 650-135 102 <br /> Ethylbenzene 0200 0201 650-135 101 <br /> Xylenes(total) 0 600 0 663 65 0-135 110 <br /> Surrogate a,a a-Trifluorotoluene 0 300 0 289 650-135 963 <br /> LCS 9080398-13S2 <br /> Benzene 8/18199 0200 0207 mg/kg 650-135 103 <br /> Toluene 0200 0209 65 0-135 105 <br /> Ethylbenzene 0200 0204 65 0-135 102 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitio <br /> Page 10 of 16 <br />