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404 <br /> ftet <br /> Sequoia Creek.� `CA 598 <br /> Walnut CA 94598 <br /> (925)968-9600 <br /> FAX(925)988-9673 <br /> Analytical www seguolalabs com <br /> Gettler Ryan,Inc -Dubhn Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-6171 Report Revised <br /> Dublul CA,94568 Project Manager Deanna L Harding 15-Jan-01 08 05 <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 Luna Notes <br /> Batch OK16008: Prepared 16-Nov-00 Usmg EPA 5030B]PIT] <br /> Blank(OK16008-BL.KI) <br /> Purgeable Hydrocarbons ND 50 ug,9 <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 %aa-Tnfluorotoluene 269 300 897 70-130 <br /> LCS(OK16008-BSI) <br /> Benzene 191 050 ug/1 200 95 5 70-130 <br /> Wlb-- <br /> ne19 4 050 200 970 70-130 <br /> 19 6 050 200 990 70-130 <br /> Xylenes(total) 568 050 600 947 70-130 <br /> Surrogate q q a-Tnfluorotoluene 279 300 930 70-130 <br /> Matrix Spike(OK16008-MSI) Source W011131-08 <br /> Benzene 204 050 ug/l 200 ND 102 70-130 <br /> Toluene 208 050 200 ND 104 70-130 <br /> Ethylbeanzene 20 9 050 200 ND 104 70-130 <br /> Xylenes(total) 606 050 600 ND 101 70-130 <br /> Surrogate qqa-Tnfluorotoluene 181 300 940 70-130 <br /> Matrix Spike Dup(OK16008-MSDI) Source W011131-08 <br /> Benzene 209 050 ug/1 200 ND 104 70-130 242 20 <br /> Toluene 213 050 200 ND 106 70-130 238 20 <br /> Ethylbenzene 213 050 200 ND 106 70-130 190 20 <br /> Xylenes(total) 617 050 600 ND 103 70-130 ISO 20 <br /> Surrogate q[{a-Trifluomtoluene 287 300 957 70-130 <br /> O <br /> UOla Analytical-Walnut Creek Thus report represents a revision of the onginad document The re Tula in this report apply <br /> to the samples analyzed in accordance with the chain of custody document Thus analyncal <br /> report must be reproduced m its ennreiy <br /> ie Westwater,Project Manager Page 6 of 8 <br />