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Sequoia 4041v 1lCtie <br /> Walnut Creek, CA 94598 <br /> 4 (925)988-9600 <br /> Analytical FAX (925)988-9673 <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 09-Mar-00 10 44 <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 Lunit Notes <br /> Batch OB29003-EPA 5030B 1P/T] <br /> Blank(OB29003-BLKI) Prepared&Analyzed 29-Feb-00 <br /> Purgeable Hydrocarbons ND 50 ug/1 u <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tern-butyl ether ND 25 " <br /> Surrogate ixck a-Trrfluorololuene 294 300 98.0 70-130 <br /> LCS(OB29003-BSI) Prepared&Analyzed 29-Feb-00 <br /> Benzene 209 0 50 ug/1 200 104 70-130 <br /> Toluene 211 050 200 106 70-130 <br /> Ethylbenzene 212 0 50 200 106 70-130 _. <br /> Xylenes(total) 612 050 "- 600 - 102 70-130 <br /> Surrogate q4a-Tnfluororoluene 2&3 300 943 70-130 <br /> Matrix Spike(OB29003-MSI) Source W002499-05 Prepared&Analyzed 29-Feb-00 <br /> Benzene 214 0 50 ugll 200 ND 107 70-130 <br /> Toluene - - ` �­ T 50—-_"� =20 0 'TND— �109�70-130 - <br /> Ethylbenzene 218 0 50 200 ND 109 70-130 <br /> Xylenes(total) -� ---- - -- 629 050 - --60 0 W ND 105 - 70-130 - <br />= <br /> -Surrogate aqa-T?7fluorotoluene = r 285- -- - = - - - <br />