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Sequoia 1455 McDowell Blvd North Ste <br /> 1 4 <br /> Petaluma CA 949544 <br /> 5�_N <br /> Analytical (707 792-1865 <br /> FAX (707}) 792_0342 <br /> Wo <br /> Cambria Environmental Protect Shell Oil Co Sampled 9/29/99 <br /> 270 Perkins St Project Number 440 Charter, Stockton Received 9129199 <br /> Sonoma,CA 95476 Project Manager Tom Magney Reported 10/11/99 7-1 <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 Recon RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9100007 Date Prepared 1011199 Extraction Method EPA 5030 soils <br /> Blank 9100007-BLK1 <br /> Gasoline 10/1/99 ND ugfkq 1000 <br /> Benzene ND Soo <br /> Toluene ND 5 00 <br /> Ethylbenzene ND 5 00 <br /> Xylenes(total) ND 500 <br /> Methyl Cert-butyl ether _ _ _ ND 50 0 <br /> Surrogate a a a-Trifluorotoluene 600 658 650-135 Ito <br /> Surrogate 4-Bromofluorobenzene 600 583 650-135 972 <br /> LCS 9100007-BS <br /> Gasoline 1011/99 2000 _ _ _1850_ ug/kg 65 0-135 925 <br /> Surrogate 4-Bromofluorobenzene 600 588 650-135 98 0 <br /> LCS 9100007-BS2 <br /> Benzene 1011199 200 194 ug/kg 65 0-135 970 <br /> Toluene 200 194 65 0-135 970 <br /> Ethylbenzene 200 189 65 0-135 945 <br /> Xylenes(total) 600 622 65 0-135 104 <br /> Surrogate =a a a=7'rfluorotoluene " 600 646 65 0=135 108 <br /> Alatrix Spike —9100007=MS1 P909665=01 - <br /> Gasoline 1011/99 2000 ND_ __ 1030 ug/kg 650-135 51 5 <br /> -Surrogate 4-Bromojluoroberizene_ __600- 356 65 0-135 .593-- <br /> Matrix <br /> 93T-Matrix Spike 9100007-MS2 P909665-01 <br /> Benzene 10/1/99 200 ND 256 ug/kg 65 0-135 128 <br /> Toluene 200 ND 233 65 0-135 117 <br /> Ethylbenzene 200 ND 205 65 0-135 103 <br /> Xylenes(total) 600 ND 649 650-135 108 _ <br /> Surrogate a a a-Trifluorotoluene 600 729 " 650-135 122 <br /> Matrix Spike 9100007-MS3 P909665-01 <br /> Gai.ol:nc 10/1/99 2000 ND 1470 ug kg 65 0-135 73 5 <br /> Surrogate 4-Bromofluorobenzene 11 600 438 650-135 73 0 <br /> Matrix Spike Dup 9100007-MSDI P909665-01 <br /> Gasoline 10/1/99 2000 ND 1 170 ug/kg_ 65_0-135 585 200 12 7 <br /> Surrogate 4-Bromofluorobenzene 600 385 650-135 6-12 <br /> Sequoia Analytical -Petaluma *Refer to end of report foi tett of notes and definrti <br /> Page 6 of I 1 <br />