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` Sequoia 404 N. CA <br /> Walnut Creek,,CA 94559898 <br /> (925)988-9600 <br /> „ r Analytical FAX(925)988-9673 <br /> FAX <br /> r <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Siena Court Suite J Project Number: Chevron#9-3232 Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 03-Aug-01 07:33 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical- Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(W107328-01)Water Sampled: 18-Jul-01 00:00 Received: 19-Jul-01 10:00 <br /> Purgeable Hydrocarbons ND 50 ug/1 I 1 G20003 24-Jul-01 24-Jul-01 EPA <br /> 8015M/8020 <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 ^ ^ <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 <br /> Methyl tert-butyl ether ND 2.5 « <br /> Surrogate:a,a,a-Trifluorotoluene 95.0% 70-130 " <br /> 7k1W-1 (W107328-02)Water Sampled: 18-Jul-01 12:50 Received: 19-Jul-01 10:00 <br /> Purgeable Hydrocarbons 68 50 ug/l 1 1G20003 24-Ju1-01 24-Jul-01 EPA P-01 <br /> 80I SM18020 <br /> Benzene 0.94 0.50 <br /> Toluene 0.81 0.50 " <br /> - vlbenzene ND 0.50 ^ " <br /> '".enes(total) ND 0.50 " <br /> Methyl tert-butyl ether ND 2.5 <br /> Surrogate:a,a,a-Trifluorotoluene 101 % 70-130 " <br /> MW-2(W107328-03)Water Sampled:18-Jul-01 13:53 Received: 19-Jul-01 10:00 <br /> Purgeable Hydrocarbons 3700 250 ug/1 5 IG20003 25-Jul-01 25-Jul-01 EPA P-01 <br /> 8015Mf8020 <br /> Benzene 480 2.5 <br /> Toluene 80 2.5 <br /> Ethylbenzene 410 2.5 " <br /> Xylenes(total) 320 2.5 " <br /> Methyl tert-butyl ether 80 12 " zCC-3 <br /> Surrogate:a,a,a-Triuorotoluene 129% 70-130 " <br /> -iuoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 2 of 10 <br />