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Sequoia r N VCLane <br /> Walnut Creek CAA 94598 <br /> (925)988-9600 <br /> FAX Analytical www sequoilabs alabs c 73 <br /> qucoin <br /> Gettler Rvan Inc. -Dublin Project Tosco <br /> 6747 Sierra Court Suite 7 ProleLt Number Tosco#6981 Reported <br /> Dublin CA 94568 Prolect Manager Scott Polston 15-Dec-00 15 21 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> FAnalVt, Result Limit Units Level Result %REC Limits RPD Lunit Notes <br /> Batch OK30003-EPA 5030B JP/TJ <br /> LCS(OK30003-BS4) Prepared&Analyzed 02-Dec-00 <br /> Benzene 428 0 10 mg/m'Air 400 107 70 130 <br /> Toluene 442 0 10 400 111 70 130 <br /> Ethylbenzene 4 54 0 10 400 113 70 130 <br /> Vlenes(total) 132 0 10 120 110 70-130 <br /> Surrogate aaa-Trifluorotoluene 564 600 940 70-130 <br /> LCS(OK30003-BS5) Prepared&Analyzed 03-Dec-00 <br /> Benzene 3 78 0 10 mg/m3 Air 400 945 70-130 <br /> Toluene 3 84 0 10 400 960 70-130 <br /> Ethylbenzene 390 0 10 400 975 70 130 <br /> Xylenes(total) 1 1 3 0 10 120 942 70 130 <br /> Surrogate aaa-Trifluorotoluene 590 600 983 70-130 <br /> LCS Dup(OK30003-BSD1) Prepared&Analyzed 29-Nov-00 <br /> Benzene 196 0 l0 mg/ml Air 200 990 70-130 102 25 <br /> Toluene 195 0 10 200 975 70-130 203 25 <br /> s <br /> Ethylbenzene 1 94 0 10 200 970 70-130 0 517 25 <br /> lylenes(total) 5 56 0 to 600 927 70-130 1 43 25 <br /> Surrogate a a a-Trrfluorotoluene 528 600 880 70 130 <br /> Sequoia Analytical-Walnut Creek The results in this 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 5 of 6 <br />