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Sequoia CA 444 N Lane <br /> Walnut Creek CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-%73 <br /> Analytical www sequoialabs corn <br /> 111go- <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron# 9-8632 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 16-Aug-01 08 08 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE 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 1HO1003-EPA 5030E P/T <br /> Blank(1H01003-BLKI) Prepared&Analyzed 01-Aug-Ol <br /> Purgeable Hydrocarbons ND 50 ugll <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl Cert-butyl ether(MTBE) ND 2 5 " <br /> Surrogate a,a a-Trifluorotoluene 288 300 960 70-130 <br /> Blank(1H01003-BLK2) Prepared&Analyzed 07-Aug-01 <br /> Purgeable Hydrocarbons ND 50 ugA <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tett-butyl ether(MTBE) ND 25 " <br /> Surrogate a a a-Triuorotoluene 292 300 973 70-130 <br /> Blank(1H01003-BLK3) Prepared&Analyzed 08-Aug-01 <br /> Purgeable Hydrocarbons ND 50 ugA <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether(MTBE) ND 2 5 " <br /> Surrogate a a,a-Trrt luorololuene 289 300 963 70-130 <br /> Blank(1H01003-BLK4) Prepared&Analyzed 09-Aug-01 <br /> Purgeable Hydrocarbons ND 50 ugA <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether(MTBE) ND 25 " <br /> Surrogate a a a-Tree luorotoluene 290 300 96 7 70-130 <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the c�f <br /> Th <br /> custody document is analytical report must be reproduced in its e <br /> Page 7 of 14 <br />