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� 79 1455 McDowell Blvd.North,Ste,D <br /> Sequoia Petaluma, 94954 <br /> (707)792-18b5-1865 <br /> 4D <br /> FAX( 792-0342 <br /> Analyticalwww.sequosnoialabs.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 04/05/01 13:20 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %nREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />—B atchA 030698—EPA5030,_waters <br /> Blank(1030698-BLK1) Prepared&Analyzed:03/30/01 <br /> Gasoline ND 50.0 ug/l <br /> Benzene ND 0.500 " <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:a,a,a-Trifluorotoluene 183 300 94.3 65435 <br /> Surrogate:4-Bromofluorobenzene 309 300 103 65-135 <br /> Blank(1030698-BLK2) Prepared&Analyzed:04/02/01 <br /> Gasoline ND 50.0 ug/1 <br /> Benzene ND 0.500 " <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:a,a,a-Trifluorotoluene 191 300 97.0 65-135 <br /> Surrogate:4-Bromofluorobenzene 286 300 95.3 65-135 <br /> LCS(1030698-BS1) Prepared&Analyzed:03/30/01 <br /> Gasoline 2980 50.0 ugll 2750 108 65-135 <br /> Benzene 36.2 0.500 32.0 113 65-135 <br /> Toluene 213 0.500 193 110 65-135 <br /> Ethylbenzene 47.6 0.500 46.0 103 65-135 <br /> Xylenes(total) 259 0.500 231 112 65-135 <br /> Surrogate:a,a,a-Trifluorotoluene 199 300 99.7 65-135 <br /> Surrogate:4-Bromofluorobenzene 311 " 300 107 65-135 <br /> LCS(1030698-BS2) Prepared&Analyzed:04/02/01 <br /> Gasoline 2690 50.0 ugll 2750 97.8 65-135 <br /> Benzene 42.1 0.500 32.0 132 65-135 <br /> Toluene 201 0.500 193 104 65-135 <br /> Ethylbenzenc 44.5 0.500 46.0 96.7 65-135 <br /> Xylenes(total) 244 0.500 231 106 65.135 <br /> Surrogate:a.a,a-Trifluorotoluene 290 300 96.7 65-135 <br /> Surrogate. 4-Bromofluorobenzene 301 300 100 65-135 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain 010 <br /> custody document. This analytical report must be reproduced in its enfirety. <br /> Page 5 of 8 <br />