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Sequoia 404 N CA Lane <br /> Walnut Creek CA 94598 <br /> (925)988-9600 <br /> Analytical www <br /> 988-9673 <br /> sequoequolaiabs corn <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron# 9-6258 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 27-Jul-01 10 47 <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 /> TBLB(W107225-01)Water Sampled 12-Jul-010000 Received 12-Jul-01 16 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 IG12001 20-Jul-01 20-Jul-01 EPA <br /> 8015M18020 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " CC-3 <br /> Surrogate a,a,a-Trifluorotoluene 947% 70-130 " <br /> MW-1(W107225-02)Water Sampled 12-Jul-01 12 55 Received 12-Jul-01 16 30 <br /> Purgeable Hydrocarbons ND 50 ug11 1 IG12001 20-Jul-01 20-Jul-01 EPA <br /> 80ISM18020 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> lbenzene ND 050 " <br /> enes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 25 " CC-3 <br /> Surrogate a,a,a-Trifluorotoluene 102% 70-130 <br /> MW-2(WI07225-03)Water Sampled 12-Jul-01 13 14 Received 12-Jul-01 16 30 <br /> Purgeable Hydrocarbons ND 50 ug/l I 1G12001 20-Ju"I 20-Jul-01 EPA <br /> 801%V8020 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Fthylbenzene ND 050 " <br /> \y lens(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 " CC-3 <br /> Surrogate a,a a-Trifluarotoluene 102% 70-130 " <br /> ota 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 12 <br />