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I 1 <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek. <br /> `A 94598 <br /> (92.5)988-96W <br /> FAX(92.5)988,4673 <br /> Analytical www sequoialabs core, <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Sutte 3 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 /> Reportmg Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result °/aMC Limits RPD Lieut Notes <br /> Batch OK25004-EPA'5030B[PIT] -- <br /> Blank(0125004-BIM) Prepared&Analyzed 26-Nov-00 <br /> Purgeable Hydrocarbons ND 50 ugn <br /> Bomone ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tat-butyl other ND 23 " <br /> Surmgate Raa-Diihrorotoluem" 315 300 - 105 70-130 <br /> LCS(0125004-BSl) Prepared&Analyzed 24-Nov-00 <br /> B mend 210 050 U94 200 105 70-130 <br /> Tohione 215 050 200 108 70-130 <br /> Ethylbenzene -21 6 - W 050 - 200 108 70-130 <br /> Xylenes(tow) 623 050 600 104 70-130 <br /> S—gate a,qa-Trrfluorotoluene 307 300 102 70.130 <br /> LCS(0125004-BS2) Prepared&Analyzed 26-Nov-00 <br /> Benaene 225 050 ug/1 200 113 70-130 <br />=Tohiow 23 3 0 50 20 0 116=70-130 <br /> Ethylbenzene 243 .0 50 200 121 70-130 <br /> - - -. <br />`Xylenes(tafal) _ - 69 8�`�-_ 0 54T--"��0 0_-- ——"'�116�70=130-- <br /> Surnogale_d at a-TrifIuorotohrene- - <br /> Matrix Spike(0125004-MSI) Source W011307-04 Prepared&Analyzed 24-Nov-00 <br /> Bemcno 200 050 ug/L 200 ND 100 70-130 <br /> Tohmne 206 050 200 ND 103 70-130 <br /> Ethylb209 '050 20 0 ND 104 70-130 <br /> Xylenes(tel) 610 050 600 12 997 70-130 <br /> S-Mate 4 a,a-TriJluorotohiene 292 300 973 70-130 <br /> Sequoia Analytical-Walnut Creek The results to rids report apply to the samples mudyzed in acaor Iazwe with the Chain o <br /> custody doewnen t This analysed report must be reproduced in its=40 <br /> Page 14 of 19 <br />