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404 N Wiget Lane <br /> Sequoia Walnut Z5)X96 0 <br /> 4 FAX(925)988-9673 <br /> a- ) Analytical www seguolalabs`om <br /> A 8. -W- -- <br /> Gettler Ryan,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-01 10 19 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015MI8020M <br /> Sequoia Analytical -Petaluma <br /> Repolta ig <br /> Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Nates <br /> U-18(W102669-19)Water Sampled 26-Feb-01 15 25 Received 28-Feb-01 16 50 <br /> Gasoline ND 500 ug/1 1 1030229 09-Mar-01 09-Mar-01 EPA <br /> 9015M18020M <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tent-butyl ether ND 250 <br /> Surrogate a,a,a-Tnfluorotoluene 101 % 65-135 " <br /> Surrogate 4 Bromofluorobenzene 105% 65-135 " <br /> U-19(W102669-20)Water Sampled 27-Feb-01 14 00 Received 28-Feb-01 16 50 <br /> Gasoline 392 500 ugfl 1 1030229 09-Mar-01 09-Mar-01 EPA <br /> 8015M18020M <br /> Benzene 908 0 500 " <br /> To one 130 0 500 QR-04 <br /> enzene 374 0 500 " <br /> Xy eves (total) 886 0 500 <br /> Methyl tent-butyl ether ND 250 <br /> Surrogate a,a,a-Trtfluorotoluene 987% 65-135 " <br /> Surrogate 4 Bromofluorobenzene 98 3% 65-135 <br /> U-20(W102669-21)Water Sampled 26-Feb-01 15 02 Received 28-Feb-01 16 50 <br /> Gasoline ND 500 ug/1 1 1030229 09-Mar-01 09-Mar-01 EPA <br /> 8015M/8020M <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a,a,a-Tnfluorotoluene 977% 65-135 " <br /> Surrogate 4 Bromofluorobenzene 100% 65-135 " <br /> S la Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the cham of <br /> custody document Tits analytical report must be reproduced in its entirety <br /> Page 20 of 32 <br />