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u <br /> Sequoia 1551 AIndustrial <br /> 94070-4111 <br /> 4070 4111 <br /> San Carlos CA 94070-41 1 1 <br /> (650) 232-9600 <br /> Analytical <br /> FAX(650) 23z-961 z <br /> Gottler-Ryan/Geostrategtes(1) Project Unocal(l) Sampled 9116199 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#5098 Received 9/16/99 <br /> Dublin,CA 94568 Pre ect Mana er Deanna Hardin Reported 9/30199 <br /> _''_,, Tofal Pnigeable Hydiucarboni(C6-C12)and BTEX liy DHS LUFT/QualityConi I _ M_ „ ' <br /> -Zi— xi-�._ 4. ;�g �sxr x� a a_�a _ e(�110Ea 1�IEAlytlCal SSI/C'drlOS ; <br /> Date Spike Sample QC Reporting Luunt Recov RPD RPD <br /> Anal Analyzed Level Result Result Units Recov, Limits % Limit % Notes* <br /> Batch 9090129 Date Pre ared- 9/28199 Extraction Method EPA 5030B,[PITT <br /> Blank 9090129-BLKI <br /> Purgeable Hydrocarbons as Gasolme 9/28/99 ND ug/1 500 <br /> Benzene ND n 0.500 <br /> Toluene ND to 0-500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a,a,a-Tnfluorotoluene 100 928 600-140 92 8 <br /> LCS 9090129-BSI <br /> Benzene 9/28199 100 946 ug/l 700-130 94 6 <br /> Toluene 100 8 83 700-130 88 3 <br /> Ethylbenzene 10 0 9 05 700-130 905 <br /> Xylenes(total) " 300 266 700-130 88 7 <br /> Surrogate a a a-Tri,fluorotoluene 100 9 is 600-140 915 <br /> W,,8s,,blc <br /> 9090129-BS2 <br /> Hydrocarbons as Gasoline 9/28/99 250 _264 ug/I 700-130 106 <br /> Surrogate a a a-Trifluorotoluene 100 103 600-140 103 <br /> _Matrix Spike 9090129-MSI L909164-04 <br /> Purgeable Hydrocarbons as Gasoline 9/28/99 250_ ND 267 ug/1 _ 60 0-140 107 <br /> Surrogate a a a-Trefluorotoluene 100 100 600-140 100 <br /> Matrix Spike Du p 9090129-MSD1 L909164-04 <br /> Purgeable Hydrocarbons as Gasoline 9/28/99 250 _ND 241 ug/l 60 0-140 964 250 104 <br /> Surrogate a a a-Triuorotoluene " 100 986 600-140 98 6 <br /> Batch 9090130 Date Prepared 9/28/99 Extraction Method EPA 5030B IP/TI <br /> Blank 9090130-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 9/28/99 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> X,1e es(total) " _ ":_D " v SVV <br /> Surrogate a a,a-Tnfluorotoluene " 100 � 949 600-140 94 9 <br /> LCS 9090130-BSI <br /> Benzene 9128199 100 8 19 ug/1 700-130 81 9 <br /> Toluene 100 808 700-130 808 <br /> Ethylbenzene 0 100 8 18 700-130 818 <br /> Xylenes(total) 300 244 700-130 813 <br /> uota Analytical- San Carlos "Refer to end of report for text of notes and definitions <br /> Page 21 of 30 <br />