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404 N Wiget Lane <br /> Sequoia Walnut Creek925)988-9600 <br /> FAX(925)988-%73 <br /> em <br /> Analytical www sequotalabs com <br /> Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 14-Mar-Ol 10 19 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015MIS020M <br /> Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Lirrut Units D11uUon Batch Prepared Analyzed Method Notes <br /> NP-2-60(W102669-31)Water Sampled 27-Feb-01 12 00 Received 28-Feb-01 16 50 <br /> Gasoline 9780 1000 ug/1 20 1034229 09-Mar-01 09-Mar-01 EPA <br /> 801 S1 V8020M <br /> Benzene 4120 100 " <br /> Toluene 286 100 <br /> Ethylbenzene 244 100 " <br /> Xylenes(total) 393 100 <br /> Methyl tert-butyl ether ND 50 0 " <br /> Surrogate a,a,a-Tnfluoroioluene 993% 65-135 <br /> Surrogate 41Bromofluorobenzene 106 f 65-135 " <br /> NP-2-116(W 102669-32)Water Sampled 27-Feb-01 11 00 Received 28-Feb-01 16 50 <br /> Gasoline 142 50 0 ug/1 1 1030229 09-Mar-01 09-Mar-01 EPA <br /> 8015b&9020M <br /> Benzene 281 0 500 " <br /> Toluene 0 955 0 500 QR-04 <br /> enzene 1 07 0 500 " <br /> es(total) 0 892 0 500 " <br /> Methyl tert-butyl ether ND 250 <br /> Surrogate a,a,a-Tnfluorotoluene 980% 65-135 " <br /> Surrogate 4Bromofluorobenzene 103% 65-135 " <br /> SeyU01a Analytical-Walnut Creek The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document Thrs analytical r,epon must be reproduced in its entirety <br /> Page 24 of 32 <br />