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f i <br /> 404 N MSet Lane <br /> IT-N <br /> Sequoxa Walnut Creek CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> * Analytical www sequotalabs com <br /> Gettler Ryan,Inc -Dubhn Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron# 9-1848 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harling 02-Jun-00 09 21 <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 Lunn Units Level Result %REC Luluts RPD Lunn Notes <br /> Batch OE26003-EPA 5030B [P/TJ <br /> Blank(01126003-BLK1) _ r _ _ _ _ r_ _ _ Prepared 26-May-00 Analyzed 27-May-00 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbetizene ND 050 " <br /> xylenes(total) ND 050 " <br /> Methyl ted-butyl ether ND 25 " <br /> Surrogate gao-Tri luorotoluene 303 300 101 70-130 <br /> LCS(OE26003-BSI) Prepared 26-May-00 Analyzed 27-May-00 <br /> Benzene 204 030 ug/1 200 102 70.130 <br /> Toluene 208 050 200 104 70-130 <br /> Ethylbamene 211 050 200 106 70-130 <br /> Xylenes(total) 610 050 600 102 70-130 <br /> Sun vgate as a-Trifluorotoluene 284 300 947 70-130 <br /> Mata=Spike(OE26003-MS1) Source W005561-04 Prepared 26-May-00 Analyzed 27-May-00 <br /> Benzene 207 050 ug/l 200 ND 104 70-130 <br /> Toluene 209 050 200 ND 104 70-130 <br /> Ethylbenzene 212 050 200 ND 106 70-130 <br /> Xylenes(total) 612 050 600 ND 102 70430 <br /> Surrogate cga,aTrrfluoro[oluene 291 300 970 70-130 <br /> Matrix Spike Dup(OE26003-MSD1) Source W005561-04 Prepared 26-May-00 Analyzed 27-May-00 <br /> Benzene 210 050 ug/l 200 ND 105 70-130 144 20 <br /> Toluene 214 050 200 ND 107 70-130 236 20 <br /> Ethylbenune 216 050 200 ND 108 70-130 187 20 <br /> xylenes(total) 621 050 60 0 ND 103 70-130 146 20 <br /> Surrogate qqa-Trrfluorotoluene 294 300 980 70-130 <br /> �i8guwa Analytical-Walnut Creels The results in this report apply to the samples ana&ed in accordan"with the ehrun o <br /> custody document Tins analytical report mull he reproduced in its eno-IV <br /> Page 5 of 6 <br />