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404 N Wiget Lane <br /> Sequoia Walnut Creek CA <br /> 94598 <br /> (925)988-96p0-9600 <br /> FAX(925)98&9673 <br /> Analytical WWW sequoialabs cam <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron 4 9-8632 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 14-Jun-01 1105 <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 1FO5004-EPA 5030E PIT <br /> Blank(IF05004-BLKI) Prepared&Analyzed 05-Jun-01 <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 tert-butyl ether ND 2 5 " <br /> Surrogate a a,a-Trr luorotoluene 286 300 953 70-130 <br /> Blank(IF05004-BLK2) Prepared&Analyzed 06-Jun-01 <br /> Purgeable Hydrocarbons ND 50 ugtl <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a,a a-Trifluorotoluene 275 300 917 70-130 <br /> Blank(IF05004-BLE 3) Prepared&Analyzed 07-Jun-01 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylberzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate AAa-Tnfluorotoluene 264 300 880 70-130 <br /> Blank(IF05004-BLK4) Prepared&Analyzed 08-Jun-01 <br /> Purgeable Hydrocarbons ND 50 ugfl <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a ma-ThOmorotoluene 289 300 96 3 70-130 <br /> Sequoia Analytical-Walnut Creek The results in tips report apply to the samples analyzed rn accordance with the ch <br /> custody document This analytical report must be reproduced to us emit <br /> Page 7 of 13 <br />