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• 1551 industrial Road <br /> Sequoia San Carlos,650322--491400 <br /> l FAX(650) 232-%12 <br /> Analytical www sequoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(1) Sampled 6115/00 <br /> 6747 Siam Court,Suite I Project Number Unocal SS#5098 Received 6/15/00 <br /> Dublin,CA 94568 Pro ect Mmser Deanna Hardin 6/29/00 <br /> B'TE b H ��JF'1'_ uaLi <br /> Date Spike Sample QC Reporting Lim#t Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Luna % Notes* <br /> LCS(continued} 0060090-BSI <br /> Surrogate a,a,a-Tnfluorotoluene 6/21100 100 108 ug4 600-140 108 <br /> LCS 0060090-BS2 <br /> Purgeable Hydrocarbons as Gasoline 6/21/00 250 213 119/1 700-130 85 2 <br /> Surrogate a,a,a-Tnfluorotoluene IV 100 103 600-140 103 <br /> Matrix Spike 0060090-MS1 L006128-02 <br /> Purgeable Hydrocarbons as Gasoline 6121/00 250 ND 205 ug/l 600-140 82.0 <br /> Surrogate a,a,a-Tnfluorotoluene " 10 0 11 1 600-140 111 <br /> Matrix Spike Dug 0060090-MSDI L006128-02 <br /> Purgeable Hydrocarbons as Gasoline 6121100 250 ND 212 ug/1 60 0-140 84.8 25 0 336 <br /> Surrogate a,a,a-Tri luorotoluene " 10 0 116 0 600-140 116 <br /> 0060095 Date Prepared: 6122100 Extraction Method- EPA 5030B <br /> Blank 0060095-BLKI <br /> Purgeable Hydrocarbons as Gasoline 6/22100 ND u9/1 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND " 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) " ND 0.500 <br /> Surrogate a,a,a-Trifluorotoluene 10 0 986 600-140 986 <br /> LCS 0060095-BSI <br /> Benzene 6122100 10 0 987 ug/1 700-130 987 <br /> Toluene 10 0 936 700-130 93 6 <br /> Ethylbenzene 100 909 700-130 909 <br /> Xylenes(total) 300 277 700-130 923 <br /> Surrogate a,a,a-Trni luorotoluene 100 969 600-140 969 <br /> LCS 0060095-BS2 <br /> Purgeable Hydrocarbons as Gasoline 6/22/00 250 244 119/1 700-130 976 <br /> rn na 47 " Kf)n-1dn 07 7 <br /> Surrogate a,a,a-Tnfluororoluene .v v �� -�- - - - - - <br />_Matrix Spike 0060095-MU L006137-09 <br /> Benzene 6122/00 100 ND 103 119/1 600-140 103 <br /> Toluene " 100 ND 108 600-140 108 <br /> Etrhylbauze 7e 100 ND 991 600-140 99.1 <br /> Xylenes(total) 300 ND 310 " 600-140 103 <br /> I <br /> Surrogate a,a,a-Trifluorotoluene 100 945 " 600-140 945 <br /> Sequoia Analytical-San Carlos *Refer to end of reportfor text of notes and definitions <br /> Page 9 of 14 <br />