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404 N Wiget Lane <br /> Sequoia Walnut Creek9 )988-49600 <br /> FAX(925)988-9673 <br /> Analytical www sequoialabscom <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0187 Reported <br /> Dublin CA 94568 Project Manager P Le Chemmant 19-Jan-01 07 47 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Lumt Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1-22(W012569-01)Water Sampled 19-Dec-00 09 15 Received 21-Dec-00 13 05 P-01 <br /> Purgeable Hydrocarbons 7200 2500 ug/1 50 1A09012 02-Jan-01 02-Jan-01 EPA <br /> 8015M/8020 <br /> Benzene 580 25 " <br /> Toluene 69 25 " <br /> Ethylbenzene 630 25 " <br /> Xylenes(total) 1000 25 " <br /> Methyl tort-butvl ether 230 130 CC-3 <br /> Surrogate a a a-Tnfluorotoluene 977% 70-130 " <br /> NP-1-65(WO12569-02)Water Sampled 19-Dee-0010 05 Received 21-Dec-00 13 05 P-01 <br /> Purgeable Hydrocarbons 24000 20000 ugll 400 IA01001 01-Jan-01 01-Jan 01 EPA <br /> 8015M/8020 <br /> Benzene 1800 200 " <br /> luene 5800 200 " <br /> ylbenzene 500 200 " <br /> ylenes(total) 3200 200 " <br /> Methyl tert-butyl ether ND 1000 " <br /> Surrogate a a a-Tnfluorotaluene 102% 70-130 " <br /> NP-1-111 (W012569-03)Water Sampled 19-Dec-00 10 25 Received 21-Dec-0013 05 P-04 <br /> Purgeable Hydrocarbons 180 50 ug/1 1 IA09013 02-Jan-01 02-Ian-01 EPA <br /> 8015M/8020 <br /> Benzene 3 4 0 50 " <br /> Toluene 069 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes (total) 2 1 0 50 " <br /> Methyl tent-butyl ether 3 3 2 5 CC-3 <br /> Surrogate a,a,a-Tnfluorotoluene 963 % 70-130 " <br /> uoia 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 7 <br />