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! " 404 N.Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> i{p (925)988-9600 <br /> _ W n(925)988 9673 <br /> Analytical sequolalabs.com <br /> Gettler Ryan,Inc.-Dublin Project: Tosco <br /> 6747 Sierra Court Suite 7 Project Number: Tosco# 11192 Reported: <br /> Dublin CA,94568 { Project Manager: Doug Lee 20-DecI00 10:57 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control` <br /> Sequoia Analytical -Walnut Creek <br /> a <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OL09001-EPA 5030B [P/TJ <br /> Blank(OL09001-BLKI)j Prepared&Analyzed:09-Dec-00 <br /> Purgeable Hydrocarbons ;t ND 50 ug/1 <br /> Benzene " ND 0.50 _ <br /> Toluene ND <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) {'` ND : rt 0.50 " <br /> Surrogate:izaa-Trifluorotoluene 30.7 30.0 102 70-130 <br /> f�I; <br /> LCS(OL09001-BSl) E Prepared&Analyzed:09-Dec-00 <br /> Benzene 18.1 0.50 ug/1 20.0 90.5 70-130 <br /> Toluene ; 18.9 0.50 20.0 94.5 70-130 <br /> Ethylbenzene 19.7 0.50 " 20.0 98.5 70-130 <br /> Xylenes(total) 59.8 0.50 60.0 99.7 70-130 <br /> Surrogate:aqa-Trlfluorotoluene 29.8 30.0 99.3 70-130 <br /> Matrix Spike(OL09001=MS1) Source:W012073-09 Prepared&Analyzed:09-Dec-00 <br /> Benzene16.7 0.50 ug/1 20.0 ND 83.5 - 70-130 <br /> Toluene ,17.4 0.50 20.0 ND 87.0 70-130 <br /> Ethylbenzene 18.1 0.50 " 20.0 ND 90.5 70-130 Id.l <br /> Xylenes(total) 55.3 0.50 60.0 ND 92.2 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 29.7 30.0 99.0 70-130 <br /> l� <br /> Matrix Spike Dup(OL09001-MSD1) Source:W012073-09 Prepared&Analyzed:09-Dec-00 <br /> Benzene -16.3 0.50 ug/1 20.0 ND 81.5 70-130 2.42 20 <br /> Toluene 17.1 0.50 20.0 ND 85.5 70-130 1.74 20'' <br /> Ethylbenzene 17.8 0.50 20.0 ND 89.0 70-130 1.67 20 <br /> Xylenes(total) 54.4 0.50 60.0 ND 90.7 70-130 1.64 20 <br /> it <br /> Surrogate:aaa-Trifluorotoluene 29.4 30.0 980 70-130 <br /> 3 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> +f custody document.This analytical report must be reproduced in its entirety. <br /> J <br /> ii <br /> Page 4 of 6 <br /> l� � <br />