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404 N W1S*lane <br /> Sequoia Walnut Gem X9600 <br /> i FAX(925)988-%73 <br /> Analytical www sequo'alabs`°m <br /> 070 <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#2859 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 15-Dec-00 14 52 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT -Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source -/oREC RPD <br /> Analyte Result Lutist Unrts Level Result -/.REC Luruts RPD Lmut Notes <br /> Batch OK25003-EPA 5030B [Pfn <br /> Blank(0125003-BLK1) Prepared&Analyzed 24-Nov-00 <br /> Purgeabla Hydrocarbons ND 50 119/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Mdhyl tat-bityl ether ND 25 " <br /> Surrogate qa;a-Trifluorotohmne 3Q0 300 100 70-130 <br /> LCS(OK25003 BSI) Prepared&Analyzed 24-Nov-00 <br /> Benzena 185 050 ug/l. 200 925 70-130 <br /> Toluene 191 050 200 955 70-130 <br /> anzane <br /> 201 050 200 101 70-130 <br /> (fatal) <br /> 605 050 600 101 70-130 <br /> Surrogate qqa-Trrfhrorotohwne 292 " 300 973 70-130 <br /> LCS Dup(01250(k3 BSDI) Prepared&Analyzed 24-Nov-00 <br /> Benzeme 188 050 u94 200 940 70-130 161 20 <br /> Toluene 197 050 200 98.5 70-130 309 20 <br /> Ethylbenzene 202 050 200 101 70.130 0 496 20 <br /> Xylenes(total) 616 050 600 103 70-130 ISO 20 <br /> Surrogais a Aar•Trrfluor Toluene 306 300 102 70.130 <br /> Batch OK25004-EPA 5030B[PM <br /> Blank(0125004-BLKl) Prepared&Analyzed 24-Nov-00 <br /> Purgeable Hydrocarbons ND 50 113/1 <br /> Banzeme ND 050 " <br /> Tohwm ND 050 " <br /> Ethylbenzaae ND 050 " <br /> Xylenes(total) ND 050 " <br /> Mdhyl Cert-butyl ether ND 25 " <br /> Surrogate qqa-Trifluorotohurn 314 300 105 70-130 <br /> o1a Analytical-Walnut Creek The results in dus repari apply to the samples anal3zed in accordance with dse chain of <br /> custody document Tlas amalyucal report must be reprodwed in its enmity <br /> Page 13 of 19 <br />