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404 N Wlget Lane <br /> Sequoia Walnut Geek CA 94598 <br /> (925)%a4660 <br /> Analytical FAX <br /> w (925)9s>lal <br /> www sequoabs&m <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J ProJectNumber Tosco#6981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 20-Oct-0O 15 26 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lmut Units Dilution Batch Prepared Analyzed Method Notes <br /> VW-3(W009589-15RE1)Water Sampled 22-Sep-0010 06_ Received 25-Sep-00 15 30 <br /> Methyl ter(-butyl ether 3200 250 ug/l I00 0JO4003 04-Oat-00 05-Oct-00 EPA <br /> 8015M/8020 <br /> Surrogate a,a,a-Tnfluorotoluene 102% 70-130 <br /> VW4(W009589-16)Water Sampled 22-Sep-00 12 55 Received 25Sep-0015 30 P-01 <br /> Purgeable Hydrocarbons 12000 10000 ug/1 200 0704003 04-Oct-00 04-Oct-00 EPA <br /> 801 SM/8020 <br /> Benzene ND 100 n ^ R n R R <br /> Toluene ND 100 ^ ^ n R n R <br /> Ethylbenzene ND 100 <br /> Xylenes(total) 200 100 ^ ^ <br /> Methyl tent-butyl ether 2800 500 <br /> Surrogate a,a,a-Tnfluorotoluene 993% 70-130 <br /> VW-7(W009589-17)Water Sampled 22-Sep-00 13 30 Received 25-Sep-00 15 30 P-01 <br /> Purgeable Hydrocarbons 8500 500 ug/l 10 0JO4003 044Oct-00 04-Oct-00 EPA <br /> 8013M/8020 <br /> Benzene 610 50 R R R ^ ^ <br /> Toluene 2200 50 R n R R n n <br /> Ethylbenzene 12 50 ^ ^ ^ R <br /> Xylenes(total) 4900 50 ^ ^ <br />' Methyl Cert-butyl ether 300 25 ^ ^ n <br /> Surrogate a,a,a-Tnfluorotoluene 101 % 70-130 ^ ^ <br /> PTW-1 (W009589-18)Water Sampled 22-Sep-00 17 40 Received 25-Sep-00 15 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 0104003 0443ct-M 04.Oct-M EPA <br /> Benzene ND 050 ^ R ^ ^ n 8015MM20 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a,a,a-Tnfluorotoluene 100% 70-130 <br /> Se(1U01a Analytlt l -Walnut Creek The results in flus report apply to the samples mwbwed in accordance wrth the chain <br /> custody doewmnL This wm*heal report must be reproduced in its entre <br /> Page 7 of 23 <br />