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1455 McDowell Blvd. North, Ste. D <br />e y' ®i a Petaluma, E A 94954 <br />ID a.R (707)792-1865 <br />FAX (707) 792-0342 <br />alyticalwww.sequoialabs.com <br />Cambria Environmental Project: Equiva <br />270 Perkins St. Project Number: 880 Victor Rd., Lodi, CA Reported: <br />Sonoma CA, 95476 Project Manager: Aubrey Cool 12/12/00 11:01 <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 0110649 - EPA 5030, soils <br />LCS (0110649-BS1) <br />Prepared & Analyzed: 11/28/00 <br />Gasoline <br />4.17 <br />1.00 <br />mg/kg 5.50 75.8 65-135 <br />Benzene <br />0.0626 <br />0.00500 <br />0.0640 97.8 65-135 <br />Toluene <br />0.336 <br />0.00500 <br />0.386 87.0 65-135 <br />Ethylbenzene <br />0.0782 <br />0.00500 <br />0.0920 85.0 65-135 <br />Xylenes (total) <br />0.426 <br />0.00500 <br />" 0.462 92.2 65-135 <br />Surrogate: a,a,a-Tris luorotoluene 0.586 0.600 97.7 65-135 <br />Surrogate:4-Bromofluorobenzene 0.614 " 0.600 102 65-135 <br />LCS (0110649-BS2) <br />Prepared & Analyzed: 11/29/00 <br />Gasoline <br />4.19 <br />1.00 mg/kg <br />5.50 76.2 65-135 <br />Benzene <br />0.0650 <br />0.00500 <br />0.0640 102 65-135 <br />Toluene <br />0.353 <br />0.00500 <br />0.386 91.5 65-135 <br />Ethylbenzene <br />0.0833 <br />0.00500 <br />0.0920 90.5 65-135 <br />Xylenes (total) <br />0.454 <br />0.00500 <br />0.462 98.3 65-135 <br />Surrogate: a,a,a-Tris luorotoluene 0.625 0.600 104 65-135 <br />Surrogate:4-Bromofluorobenzene 0.632 0.600 105 65-135 <br />LCS (0110649-BS3) <br />Prepared: 11/28/00 Analyzed: 12/01/00 <br />Gasoline <br />5.92 <br />1.00 <br />mg/kg 5.50 108 65-135 <br />Benzene <br />0.0738 <br />0.00500 <br />0.0640 115 65-135 <br />Toluene <br />0.419 <br />0.00500 <br />0.386 109 65-135 <br />Ethylbenzene <br />0.0936 <br />0.00500 <br />0.0920 102 65-135 <br />Xylenes (total) <br />0.507 <br />0.00500 <br />0.462 110 65-135 <br />Surrogate: a,a,a-Tris luorotoluene 0.603 0.600 100 65-135 <br />Surrogate.4-Bromofluorobenzene 0.653 0.600 109 65-135 <br />LCS (0110649-BS4) <br />Prepared & Analyzed: 12/04/00 <br />Gasoline <br />5.53 <br />1.00 <br />mg/kg 5.50 101 65-135 <br />Benzene <br />0.0842 <br />0.00500 <br />" 0.0640 132 65-135 <br />Toluene <br />0.388 <br />0.00500 <br />" 0.386 101 65-135 <br />Ethylbenzene <br />0.0887 <br />0.00500 <br />0.0920 96.4 65-135 <br />Xylenes (total) <br />0.485 <br />0.00500 <br />0.462 105 65-135 <br />Surrogate: a,a,a-Tris luorotoluene 0.585 0.600 97.5 65-135 <br />Surrogate.4-Bromofluorobenzene 0.624 0.600 104 65-135 <br />Sequoia 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 10 of 19 <br />