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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma to 94954 <br /> FAX(707)792-0342 <br /> Analytical www sequolalabs com <br /> Cambria Environmental Project Equiva Sampled 3/27/00 to 3/30/00 <br /> 270 Perkins St Project Number 620 W Charter,Stockton Received 3/31100 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 4/17/00 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M/Quality Control <br /> -===SequpI Analytical=PetalUinia ` <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal e Analyzed Level Result Result Units Recov Limits % Lurut % Notes* <br /> Blank(continued) 0040114-BLKI <br /> Ethylbenzene 416/00 ND ug/1 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 250 <br /> Surrogate a a a-Triuorotoluene 300 321 650-135 107 <br /> Surrogate 4-Bromofluorobenzene 300 272 650-135 907 <br /> LCS 0040114-BSI <br /> Benzene 4/6/00 100 944 ug/l 650-135 944 <br /> Toluene 100 956 650-135 956 <br /> Ethylbenzene I00 91 5 650-135 915 <br /> Xylenes(total) 300 288 650-135 960 <br /> Methyl tert-butyl ether 100 882 650-135 882 <br /> Surrogate a a,a-Tr fluorotoluene 300 318 650-135 106 <br /> Matrix Spike 0040114-MSI P004023-34 <br /> Benzene 4/6100 100 ND 95 9 ugll 650-135 95 9 <br /> Toluene 100 ND 965 65 0-135 965 <br /> Ethylbenzene 100 ND 926 650-135 92 6 <br /> Xylenes(total) 300 ND 290 650-135 967 <br /> Methyl tert-butyl ether " 100 ND 88 8 "�65-0-135 88 8 <br /> Surrogate a,a a-Triuorotoluene 300 329 650-135 110 <br /> Matrix Spike Duo 0040114-MSDI P004023-34 <br /> Benzene 416/00 100 ND 964 ug/1 650-135 964 200 0 520 <br /> Toluene 100 ND 966 65 0-135 966 200 0 104 <br /> Ethylbenzene I00 ND 922 650-135 922 20 0 0 433 <br /> Xylenes(total) 300 ND 291 650-135 97 0 200 0 310 <br /> Methyl tent-butyl ether 100 ND 93 3 650-135 933 200 494 <br /> Surrogate a a,a-Trifluorotoluene 300 330 650-135 110 <br /> Batch 0040115 Date Prepared 415100 Extraction Method EPA 5030 soils <br /> Blank 0040115-BLK1 <br /> Gasoline 4/6/00 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tent-butyl ether ND 00500 <br /> Surrogate a a,a-Trifluorotoluene 0 600 0 596 650-135 993 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 643 650-135 107 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Da Page 17 of 22 <br />