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Striker Ave Ste 8 <br /> Sequoia Sacracr amento CA 95834 <br /> iqW Analytical (916)992 1 21-9600 <br /> FAX qu alabs c00 <br /> www sequoielabs coin <br /> SECOR International-Rancho Cordova Project Tosco 5447,Stockton,CA S307373 <br /> 3017 Kilgore Road,Suite 100 Protect Number NIA Reported <br /> Rancho Cordova CA,95670 Protect Manager RustyBenkosky 08/04/03 16 14 <br /> Gasoline(2-Methylpentane to 1,2,4-Trlmethylbenzene) and BTEX by EPA 8015M and 8021B - Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notcs <br /> Batch 3070291-EPA 5030B(P/T) <br /> Matrix Spike 3070291-MS1 Source 5307344-03 Prepared 07/23/03 Analyzed 07/24/03 <br /> Benzene 00144 0 0050 mg/kg 00200 ND 72 60-140 <br /> Toluene 00126 0 0050 00200 ND 63 60-140 <br /> Ethylbenzene 0 0113 00050 00200 ND 56 60-140 QM-07 <br /> Xylenes(total) 0 0389 0 0050 00600 ND 65 60-140 <br /> Surrogate a a a-Trifluorotoluene 00133 00200 66 60-140 <br /> Matrix Spike Du 3070291-MSD1 Source S307344-03 Prepared 07/23/03 Analyzed 07/24/03 <br /> Benzene 00140 0 0050 mg/kg 00200 ND 70 60-140 3 25 <br /> Toluene 00130 0 0050 00200 ND 65 60-140 3 25 <br /> Ethylbenzene 00125 0 0050 00200 ND 62 60-140 10 25 <br /> Xylenes(total) 00409 00050 00600 ND 66 60-140 5 25 <br /> .Surrogate a a a-Trifluorotoluene 00122 00200 61 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 7 of 10 <br />