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1455 McDowell Blvd.North,Ste.D <br /> l + 4954 <br /> equola <br /> Petaluma, <br /> 79281865 <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 04/05/01 13:20 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015NV8020M - Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1030698-EPA 5030,waters <br /> Matrix Spike(1030698-MSI) Source: P103646-01 Prepared&Analyzed:03/30/01 <br /> Gasoline 2850 50.0 ug/l 2750 ND 104 65-135 <br /> Benzene 34.5 0.500 32.0 ND 108 65-135 <br /> Toluene 208 0.500 193 ND 108 65-135 <br /> Ethylbenzene 46.4 0.500 46.0 ND 101 65-135 <br /> Xylenes(total) 252 0.500 231 ND 109 65-135 <br /> Surrogate:a.a.a-Trifluorotoluene 299 300 99.7 65-135 <br /> Surrogate:4-Bromofluorobenzene 318 300 106 65-135 <br /> Matrix Spike Dup(1030698-MSD1) Source: P103646-01 Prepared&Analyzed:03/30/01 <br /> Gasoline 2810 50.0 ugll 2750 ND 102 65-135 1.41 20 <br /> Benzene 36.5 0.500 32.0 ND 114 65-135 5.63 20 <br /> Vene 216 0.500 193 ND 112 65-135 3.77 20 <br /> ibenzene 48.3 0.500 46.0 ND 105 65-135 4.01 20 <br /> Xylenes(total) 261 0.500 231 ND 113 65-135 3.51 20 <br /> Surrogate:a,a,a-Trifluorotoluene 309 300 103 65-135 <br /> Surrngate:4-Bromofluorobenzene 313 300 104 65-135 <br /> &quoia 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 6 of 8 <br />