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404 N Wiget Lane <br /> Sequoia Walnut Creek.CA 94590 <br /> (925)988-96O0 <br /> FAX(925)988-9673 <br /> Analytical mrww sequaialabs CE)m <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 O1 10 19 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-15(W102669-16)Water Sampled 26-Feb-01 12 55 Received 28-Feb-01 16 50 y <br /> Gasoline ND 500 ug/I 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-Trifluorotoluene 100% 65-135 " <br /> Surrogate 4 Bromofluorobenzene 101 % 65-135 " <br /> U-16(W102669-17)Water Sampled 26-Feb-01 14 15 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 - 0 504 T__ " -- __ _ „_ " _ „ _ __ __ • <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 2 50 " <br /> Surrogate a,a,a-Tnfluorotoluene 983% 65-135 <br /> Surrogate 4 Bromo uorobenzene — _ 102% 65435 <br /> U-17(W102669-18)Water Sampled 26-Feb-01 14 35 Received 28-Feb-01 16 50 <br />-- Gasoline W_ - — SND -- 5040 ug/l -LW- 1030229 _09-Mar-61 09-Mar-01 EPA -- -- <br /> 80I5M/8020M <br /> Benzene - 0 704 0500- <br /> Toluene <br /> 500-Toluene 0 574 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 973% 65-135 " <br /> Surrogate 4 Bromofluorobenzene 105% 65-135 " <br /> Sequoia Analytical-Walnut Creek The results to thus report apply to the samples analyzed to accordance with the chain <br /> custody document. Tks analytical report must be reproduced to its enureqW <br /> Page 19 of 32 <br />