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404 N Wiget Lane <br /> Sequoia Walnut Geek CA 94598 <br /> 4 (925)988-%W <br /> 4D FAX(925)988-9673 <br /> %0 Analytical www sequoialabs com <br /> Gettler Ryan, Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-6171 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 31-Jul-01 07 59 <br /> Total Purgeable Hydrocarbons (C6-Cl2), 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(W107262-01)Water Sampled 12-Jul-01 00 00 Received 13-Jul-01 17 35 <br /> Purgeable Hydrocarbons ND 50 up,/[ l IG20003 20-Jul-01 20-Jul-01 EPA <br /> 8015M/8020 <br /> Benzene ND 0 50 <br /> Toluene 066 0 50 0-05 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) 092 050 " 0-05 <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a,a,a-Trifluorotoluene 950% 70-130 " <br /> MW 2(W707262-02)Water Sampled 12-Jul-01 15 18 Received 13,1ul-01 17 35 <br /> Purgeable Hydrocarbons 190 50 ugfl 1 IG20003 23-Jul-01 23-Jul-01 EPA D-06 <br /> 8015A,V8020 <br /> Benzene ND 050 zCC-3 <br /> Toluene ND 050 <br /> 0enzene ND 050 n x <br /> es(total) ND 050 <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a aa-Trifluorotoluene 101 % 70-130 " <br /> MW 3(W107262-03)Water Sampled 12-Jul-01 14 26 Received 13-Jul-01 17 35 <br /> )Purgeable Hydrocarbons 210 50 ug/l 1 1G20003 23-Jul-01 23-Jul-01 EPA D-06 <br /> 8015NV8020 <br /> Benzene ND 050 " " zCC-3 <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-Trifluorotoluene 111 % 70-130 " <br /> 1a 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 18 <br />