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404 N Wiget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> (925)9 <br /> 88-9600 <br /> FAX(925)988-9673 <br /> 1WO Analytical www sequotalabs com <br /> Gettler Rvan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite 7 Project Number Iosco#6981 Reported <br /> Dublin CA 94568 Project Manager Scott Polston 13-Nov-00 09 52 <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 /> Analyte Result Limit Units Level Result %REC Limits RPD Lirrut Notes <br /> BatLh UJ30008- EPA 5030B IP/TI <br /> Blank((IJ30008-BLKI) Prepared&Analvzed 27-Oct-00 <br /> Purgeable H,,dr"arbons ND 10 mg/m'Air <br /> Benzene ND 010 <br /> Toluene ND 010 " <br /> Ethylbenzene ND 010 " <br /> Xylenes(total) ND 0 10 " <br /> Methvl tent butyl ether ND 050 " <br /> Surrogate a a a-Triuorotoluene 538 600 897 70-130 <br /> Blank(OJ30008-BLK2) Prepared&Analyzed 02-Nov-00 <br /> Purgeable Hydrocarbons ND 10 mg/m'Air <br /> Benzene ND 010 " <br /> �ene ND 010 " <br /> benzene ND 010 <br /> Xylenes(total) ND 0 10 <br /> Methyl tert-butyl ether ND 050 " <br /> Surrogate a a a-Tri luorotoluene 5 30 600 883 70.130 <br /> LCS(OJ30008-BSI) Prepared&Analvzed 27-Oct-00 Q-01 <br /> Benzene 258 0 10 mg/m'Air 200 129 70-130 <br /> Toluene 264 0 10 200 132 70-130 <br /> Ethylbenzene 266 010 200 133 70-130 <br /> Xylenes(total) 756 0 10 600 126 70-130 <br /> I <br /> Surrogate a a,a-Trrfluorotoluene 524 o600 873 70-130 <br /> LCS(OJ30008-BS2) Prepared&Analyzed 02-Nov-00 <br /> Benzene 366 0 10 mg/m'Air 400 91 5 70 130 <br /> Toluene 3 80 0 10 400 95 0 70-130 <br /> Ethylbenzene 3 86 0 10 400 965 70-130 <br /> Xylenes(total) 11 1 0 10 12 0 925 70-130 <br /> Surrogate a a a-Trri luorotoluene 628 600 105 70-130 <br /> �uola Analvttcal-Walnut Creek The results in this report apply to the smnples analyzed in accordance with the chain of <br /> custody document Thry analytical report must be reproduced in in entirety <br /> Page 4 of 6 <br />