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Sequoia 404 H WiLane <br /> Walnut Creek CAA 94598 <br /> (925)988-96W <br /> 673 <br /> Analytical <br /> FAX equo 98bs com <br /> www se�uoialabs coin <br /> Gettler Ryan,Inc -Dubhn Project Tosca <br /> 6747 Sierra Court Suite J Project Number Tosco 4 11193, Reported <br /> a <br /> Dublin CA,94568 Project Manager Doug Lee 01-Jun-01 d 14 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> f <br /> i <br /> Reporting <br /> Analyte Result limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1R(W105543-01)Water Sampled 24-May-01 00 00 Received 24-May-01 17 20 <br /> Purgeable Hydrowrbons ND 50 ugll 1 1E31003 31-May-01 31-May-01 EPA <br /> —aolsM�so2o-- — -- <br /> -Benzene - � -- __�. �_.�___�.._�___ ND __.__6_56 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether 800 50 20 CC-2 <br /> Surrogate a a a-Trtfluorotoluene 967% 70-130 <br /> MW-2R(W105543-02)Water Sampled 24-May-01 000 <br /> Received 24-May-01 17 20 <br /> Purgeable Hydrocarbons 1100 1000 ug/1 20 1 E3100 31-May-01 31-May-01 EPA <br /> P-03 <br /> Benzene8015M/8020 <br /> 60 10 �� �� •� „ „ „ <br /> Toluene ND 10 <br /> Ethylbenzene ND 10 <br /> Xylenes(total) ND 10 <br /> Methyl tert-butyl ether 89000 2500 1000 01-Jun-01 " <br /> CC- <br /> Surrogate a a a-Trifluorotoluene 113 % 70-130 31-May-01 <br /> VW-1 (W105543-03)Water Sampled 24-May-01 00 00 Received 24-May-01 17 20 <br /> Kfieable Hydrocarbons 2500 1000 ug/120 1E31003 31-May-01 31-May-01 EPA P 03 <br /> Benzene 68 10 8015M/8020 <br /> Toluene ND 10 <br /> Ethylbenzene ND 10 <br /> Xylenes(total) ND 10 <br /> Methyl tert-butyl ether 210000 2500 1000 01-Jun-01 " <br /> CC-2 <br /> Surrogate a,a,a-Tnfluorotoluene 100% 70-130 3l-May 01 " <br /> Sequoia Analytical- Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in ifs enirrelye <br /> Page 2 of 6 <br />