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, <br /> Wk8et La <br /> Sequoia `N " <br /> Walnut cam.cry 9459 <br /> (925)%8-9600 <br /> A <br /> FAX(925) 673 <br /> Analytical <br /> www scquolslab&labs.00m <br /> I <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#8671- Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 14-Aug-00 07 49 <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 r Notes <br /> Batch 011104002-EPA 5030B [PIT] <br /> Blank(OH04002-BLKI) Prepared&Analyzed 04-Aug-00 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a,a a-Tnfluorotoluene 191 300 973 70-130 <br /> LCS(OH04002-BSI) Y V Prepared&Analyzed 04-Aug-00 T <br /> Benzene 190 0 50 ug/I 1200 95 0 70-130 <br /> Toluene _ 196- -- 0 50- - 200 - -980 70-130 - <br /> Ethylbenzene 204 0 50 200 102 70-130 <br /> Xylenes(tom) 610 050 600 102 70-130 <br /> Surrogate as,ga-TnJhrorotoluene 2S7 300 957 70.130 <br /> Matrix Spike(OH04002-MSI) Source W008010-02 Prepared&Analyzed 04-Aug-00 <br /> Benzene -- <br /> Toluene 199 050 200 ND 995, 70-130 <br />=Ethylbenzene- — <br /> Xylenes(total) 640 0 50 600 ND 107 70-130 <br /> Surrogate aaa-Tnfluorwoluene 272 3001 907 70.130v- <br /> Matrix Spike Dup(OH04002-MSDI) Source W008010-02 Prepared&Analyzed 04-Aug-00 <br /> Benzene 194 0 50 ug/l. 200 ND 970 70-130 0 514 20 <br /> Toluene 201 050 200 ND 101 70-130 100 20 <br />— Ethylbenzene 215 050 " 200 ND 108 70.130 141 20' <br /> Xylenes(tom) - 657 050 " 600 ND 109 70-130 2 62 20 <br /> Surrogate a a a-Tnfluorotaluene 270 300 900 70-130 Y <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chmn <br /> custodydocument Thus analytical report must be reproducedin uts entire <br /> Page 6 of 9 <br />