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Sequoia 404 N W 9 <br /> Walnut Creek CAA 945 9459€ <br /> (925)988-9600 <br /> Analytical www <br /> 988-9673 <br /> sequequoialabs corn <br /> CTettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosca 6981 Reported <br /> Dublin CA,94568 Project Manager Scott Polston 02-Ian-01 18 17 - <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX in Air by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> FAnalvte Result Linn Units Level Result %REC Ltnnts RPD Luna Notes <br /> Batch OL14004-EPA 5030B [PIT] <br /> LCS Dup(OL14004-BSDI) Prepared&Analyzed 13-Dec-00 Q-01 <br /> Benzene 1 12 0 010 mg/n13 Air 200 560 65-120 935 25 <br /> Toluene 129 0 010 200 645 65-120 243 25 <br /> Ethylbenzene 1 01 0 Oto 200 505 65-120 445 25 <br /> Xylenes(total) 324 0 010 600 540 65-120 11 1 25 <br /> Surrogate a a a-Tnfluorotoluene 564 600 940 70-130 <br /> Sequoia Analytical-Walnut Creek The results in tins report apply to the samples analyzed in accordance with the chain <br /> Custody document This analytical report must be reproduced in its entire <br /> Page 7 of 8 <br />