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i',404 N.Wiget Lane <br /> Sequoia <br /> Walnut Creek, 98 -9600 <br /> (925)988-9600 <br /> FAX(925)98&9673 <br /> Analytical - - ,n+w,vsec,uolalabs.com <br /> Gettler Ryan,Inc.-Dublin Project: Tosco <br /> 6747 Sierra Court Suite J Project Number: Tosco# 11192 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 08-Dee-00 09:13 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OK30001 -EPA 5030B[P/TJ - - <br /> Blank(OK30001-BLK1). Prepared&Analyzed:30-Nov-00 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 0.50' " <br /> Toluene ND. 0.50 " <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Trii luorotoluene 30.6 30.0 102 70-130 <br /> LCS(OK30001-BS1) Prepared&Analyzed:30-Nov-00 <br /> Benzene 18.3 0.50 ug/1 20.0 91.5 70-130 ; <br /> Toluene 18.8 0.50 20.0 94.0 70-130 <br /> ! In <br /> Ethylbenzene 19.7 0.50 20.0 98.5 70-130 <br /> Xylenes(total) 58.6 0.50 60.0 97.7 70-130 <br /> Surrogate:a,a,a-TriJluorotoluene 29.7 30.0 99.0 70-130 <br /> Matrix Spike(OK30001-MS1) Source:W011517-01 Prepared&Analyzed:30-Nov-00 <br /> Benzene 17.5 0.50 ug/1 20.0 ND 87.5 70-130 <br /> Toluene 18.0 0.50 20.0 ND 90.0 70-130 '4 <br /> Ethylbenzene 18.9 0.50 20.0 ND 94.5 70-130 �.. <br /> Xylenes(total) 58.1 0.50 60.0 ND 96.8. 70-130 <br /> Surrogate:c;aa-Trifluorotoluene 30.5 30.0 102 70-130 a <br /> Matrix Spike Dup(OK30001-MSD1) Source:W011517-01 Prepared&Analyzed:30-Nov-00 <br /> Benzene 16.5 0.50 ug/1 20.0 ND 82.5 70-130 5.88 20 <br /> Toluene 17.2 0.50 20.0 ND 86.0 70-130 4.55 20 <br /> Ethylbenzene 17.9 0.50 20.0 ND 89.5 70-130 5.43 20 <br /> Xylenes(total) 54.1 0.50 60.0 ND 90.2 70-130 7.13 20 '- <br /> Surrogate:a,qa-Tris luorotoluene 29.5 30.0 98.3 70-130 <br /> Y. <br /> F i <br /> Sequoia 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 4 of 6 <br />