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Sequoia <br /> 1455 McDowell Blvd.[forth,Ste.D <br /> VLquola Petaluma, 79 94954 <br /> -1865 <br /> (707)792-1865 <br /> FAX(707)792-0342 <br /> 0 1W Analytical www.sequoialabs.com <br /> Cambria Environmental-Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St,Ripon,Ca Reported: <br /> Emeryville CA,94608 Project Manager: Owen Ratchye 04/16/01 10:22 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015MI8020M- 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 1040308-EPA 5030,waters <br /> Blank(1040308-BLKI) Prepared&Analyzed: 04/13/01 <br /> Gasoline ND 14.2 ppmv <br /> Benzene ND 0.157 " <br /> Toluene ND 0.133 " <br /> Ethylbenzene ND 0.115 " <br /> Xylenes(total) ND 0.115 " <br /> Methyi tert-butyl ether ND 0.556 " <br /> Surrogate:a,a,a-Trifluorotoluene 56.0 50.3 111 65-135 <br /> Surrogate:4-Bromofluorobenzene 41.5 41.9 99.0 65-135 <br /> LCS(1 040308-BS 1) Prepared&Analyzed:04/13/01 <br /> Gasoline 801 14.2 ppmv 780 103 65-135 <br /> JRenzene 10.5 0.157 10.0 105 65-135 <br /> oluene 58.7 0.133 51.3 114 65-135 <br /> Ethylbenzene 12.2 0.115 10.6 115 65-135 <br /> Xylenes(total) 61.3 0.115 53.3 115 65-135 <br /> Methyl tert-butyl ether 16.6 0.556 14.5 114 65-135 <br /> Surrogate:a,a,a-Trifluorotoluene 61.7 50.3 113 65-135 <br /> Surrogate:4-Bromofluorobenzene 44.1 41.9 105 65-135 <br /> Matrix Spike(1040308-MS1) Source: P104262-03 Prepared&Analyzed: 04/13/01 <br /> Gasoline 794 14.2 ppmv 780 ND 102 65-135 <br /> Benzene 12.5 0.157 10.0 ND 125 65-135 <br /> Toluene 59.7 0.133 51.3 ND 116 65-135 <br /> Ethylbenzene 12.5 0.115 10.6 ND 118 65-135 <br /> Xylenes(total) 62.4 0.115 53.3 ND 117 65-135 <br /> Methyl tert-butyl ether 19.8 0.556 14.5 ND 137 65-135 QM-07 <br /> Surrogate:a,a,a-Tris luorotoluene 62.0 50.3 123 65-135 <br /> Surrogate:4-Bromofluorobenzene 41.7 41.9 102 65-135 <br /> sequoia Analytical-Petalurna 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 6 <br /> �39 <br />