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1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petal4954 <br /> (ma,CA07)79291865 <br /> FAX(707)792-0342 <br /> Analytical www.sequoialabs.com <br /> Cambria Environmental-Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St,Ripon Reported: <br /> Emeryville CA,94608 Project Manager: Owen Ratchye 03/09/01 14:16 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015MI8020M - Quality Control <br /> Sequoia Analytical- Petaluma <br /> kq-ting Spike Source %REC RPD <br /> Analyte Result limit Units Level Result %REC Limits RPD [Amit Notes <br /> Batch 1030160-EPA 5030,waters <br /> Matrix Spike Dup(1030160-MSDI) Source: P103117-01 Prepared&Analyzed:03/07/01 <br /> Gasoline 165000 2500 ug/l 138000 29600 98.1 65-135 1.83 20 <br /> Benzene 2760 25.0 1600 674 130 65435 7.91 20 <br /> Toluene 11700 25.0 9650 2510 95.2 65-135 8.00 20 <br /> Ethylbenzene 3690 25.0 2300 1100 113 65-135 4.72 20 <br /> Xylenes(total) 18600 25.0 11600 6810 102 65-135 7.24 20 <br /> Methyl tert-butyl ether 3330 125 2600 ND 128 65-135 5.56 20 <br /> Surrogate:a.a a-Trifluorotoluene 371 300 124 65-135 <br /> Surrogate:4-Bromofluorobenzene 319 300 106 65-135 <br /> I <br /> i <br /> I <br /> equoia Analytical-PetaluMa The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 4 of 5 <br />