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it <br /> Sequoia Walnut Creek,CA 9 598 <br /> 4 (925)988-9600 <br /> Analytical FAX(925)988-9673 <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco(Unocal)#6981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 23-Nov-99 16 42 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> -- - - - Sequoia Analytical - Walnut Creek -- <br /> Reportmg <br /> Analyte Result Lutut Units Dilution Batch Prepared Analyzed Method Notes <br /> VW4(W910568-16)Water Sampled 26-Oct-99 17 25 Received 27-Oct-9913 50 P-07 <br /> Purgeable Hydrocarbons 22000 5000 ugll 100 9KO8001 08-Nov-99 09-Nov-99 EPA <br /> Benzene ND 50 FI <br /> " " ., 8015M/8020 <br /> Toluene ND 50 1 to <br /> Ethylbenzene 70 50 " <br /> Xylenes(total) 290 50 " <br /> Methyl tent-butyl ether ND 250 " <br /> Surrogate a a a-Tnfluorotoluene 900% 70-130 " <br /> VW-7(W910568-17)Water Sampled 25-Oct-99 17 45 Received 27-Oct-9913 50 P-01 <br /> Purgeable Hydrocarbons 33000 10000 ugll 200 9KO5001 05-Nov-99 05-Nov-99 EPA <br /> Benzene 2900 100 1. 1 11 118015Mt8020 <br /> Toluene 6800 100 10 " <br /> Ethylbenzene 680 100 " <br /> X)lenes(total) 7800 100 " <br /> Methyl tett-butyl ether ND 500 " <br /> .Surrogate a a a-Tr+fluorotoluene 900% 70-130 " <br /> PTW-1 (W910568-18)Water Sampled 26-Oct-99 16 00 Received 27-Oct-99 13 50 <br /> Purgeable 1lydrocarbonN ND 50 ugll 1 9KO5002 05-Nov-99 05-Nov-99 EPA <br /> Benzene ND 050 8015MI8020 <br /> Toluene 0 85 0 50 " <br /> Ethylbenzene ND 050 to " <br /> Xylenes(total) 1 1 050 " <br /> Methyl Cert-butyl ether ND 2 5 " <br /> Surrogate a a,a-Trrfluorotoluene 933% 70-130 " <br /> Sequoia Analytical -Walnut Creek Ae miultf in this report apply to the samples cnialyzed m twcordance with the chtnn <br /> custody document This analytical report must be reproducedin its entire <br /> u eg ey rolect ariag Page 7 of 19 <br />