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ft i • <br /> 404 N Wiget Fane <br /> Sequoia Walnut Creek CA 94598 <br /> IT) <br /> (925)988-9600 <br /> FAX(925)988-%73 <br /> eco Analytical www sequoialabs com <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br /> Dublin CA,94568— - - _ —,Project Manager _Scott Polston __ _ - _ - - ___ 18-Jul-01 08 02 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> 6981-EFF(W107031-01)Air Sampled 02-Jul-01 10 37 Received 02-Ju141 16 35 <br /> Purgeable Hydrocarbons ND 10 mglm'Air 02 1002003 03-Jul-01 03-Jul-01 DHS LUFT <br /> Benzene ND 010 " " " " " " <br /> Toluene ND 010 1. <br /> " " <br /> Ethylbenzene ND 010 " " <br /> Xylenes(total) ND 010 It I. " <br /> Methyl tert-butyl ether ND 050 It " <br /> Surrogate a,a,a-Trifluorotoluene 893% 70-130 " <br /> 6981-INF(WI07031-02)Air Sampled 02-Jul-01 10 41 Received 02-Jul-011635 <br /> Purgeable Hydrocarbons ND 10 mglrW Air 02 1G02003 03-Jul-01 03-Jul-01 DHS LUFT <br /> Benzene ND 010 It It " <br /> Toluene ND 010 It 1. " <br /> Ethylbenzene ND 010 " <br /> Xylenes(total) ND 0 10 " <br /> Methyl tent-butyl ether ND 0 50 <br /> Surrogate a,a,a-Tr{Jluoratoluene 880% 70-130 " <br /> Sequoia Analytical-Walnut Creek The results in this repart apply to the samples analyzed in accordance with the c <br /> custody document This analytical report must be reproduced in its e <br /> ar <br /> Page 2 of 6 <br />