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444 N WISet lane <br /> Sequoia Walnut Creek CA <br /> 94598 <br /> (925)988-9600-9600 <br /> FAX(925)988-9673 <br /> a- Analytical wwwsequolalabs 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 18-Jan-01 07 35 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source °/aREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Linut Notes <br /> Batch OL27002-EPA 5030B (FIT] <br /> Blank(OL27002-BLKI) Prepared&Analyzed 27-Dec-00 <br /> Purgeable Hydrocarbons ND 50 ugn <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Wuorotoluene 361 300 120 70.130 <br /> LCS(OL27002-BS1) Prepared&Analyzed 27-Dec-00 <br /> Benzene 187 050 uga 200 935 70-130 <br /> Toluene 194 0 50 200 970 70-130 <br /> Ethylbenzene 204 0 50 200 102 70-130 <br /> YEWIles(total) 607 0 50 600 101 70-130 <br /> gate aaa-witorotoluene 2&9 300 963 70-130 <br /> Matrix Spike(OL27002-MSI) Source W012448-10 Prepared&Analyzed 27-Dec-00 <br /> Benzene 190 050 ug/1 200 ND 950 70-130 <br /> Toluene 195 050 200 ND 975 70-130 <br /> Ethylbenzene 207 050 200 ND 104 70.130 <br /> Xylenes(total) 611 0 50 600 ND 102 70-130 <br /> Surrogate aaa•Tnfluorotoluene 309 300 103 70-130 <br /> Matrix Spike Dup (OL27002--MSD1) Source W012448-10 Prepared&Analyzed 27-Dec-00 <br /> Benzene 182 0 50 ug11 200 ND 910 70-130 430 20 <br /> Toluene 191 0 50 200 ND 955 70-130 207 20 <br /> Ethylbenzene 199 0 50 200 ND 99 5 70-130 394 20 <br /> Xylenes(total) 597 0 50 600 ND 995 70-130 232 20 <br /> Surrogate aaa-Trtfluorotoluene 303 300 101 76LI30 <br /> Qm Analytical-walnut geek The results:n 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 9 <br />