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404 N Wiset Lane <br /> Sequoia Walnut`'25)9 94� <br /> (ZNFAX(925)%8-%73 <br /> Analytical www secluolalabs corn <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 Hardmg 14-Mar-01 10 19 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015NV8020M <br /> Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Lint Units Dilution Batch Prepared Analyzed Method Notes <br /> U-24(W 102669-25)Water Sampled 26-Feb-01 17 10 Received 28-Feb-01 16 50 <br /> Gasoline ND 500 ug/l 1 1030229 09-Mar-01 09-Mar-01 EPA <br /> 8015MI8020M <br /> Benzene 0 565 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 Bromofluarobenzene 102516 65-135 " <br /> U-25(W102669-26)Water Sampled 26-Feb-01 17 21 Received 28-Feb-01 16 50 <br /> Gasoline ND 500 ug/I 1 1030229 09-Mar-01 09-Mar-01 EPA <br /> 80I5M/8020M <br /> Benzene 0 698 0 500 " <br /> T e ND 0 500 " " " •' „ <br /> enzene ND 0 500 " <br /> Xy cues(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a,a,a-Tnfluorotoluene 947% 65-135 <br /> Surrogate 4-Bromofluorobenzene 99 7% 65-135 <br /> NP-1-22(W102669-27)Water Sampled 27-Feb-01 14 25 Received 28-Feb-01 16 50 <br /> Gasoline 5340 100 ugA 2 1030229 09-Mar-01 09-Mar-01 EPA <br /> 8015M/802oM <br /> Benzene 985 100 " <br /> Toluene 997 100 <br /> Ethylbenzene 839 100 " <br /> Xylenes(total) 307 100 " <br /> Methyl tent-butyl ether 976 500 QR-04 <br /> Surrogate a,a,a-Tnfluorotoluene 99 3% 65-135 " <br /> Surrogate 4 Bromofluorobenzene 112% 65-135 " <br /> S is Analytical-Walnut Creek The results in flus report apply to the samples analyzed in accordance with the chain of <br /> custody document Tins analytical report must be reproduced in its entirety <br /> Page 22 of 32 <br />