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' �� 885[anus Drive <br /> Sequoia Morgan iidl CA 95037 <br /> CD (408)776 9600 <br /> FAX(408)782 6308 <br /> Analytical Se<,u°ia1ab5 °m <br />' Hydro-Geo Consultants,Inc Project ]Hydro-GLo <br /> 2477 Porterfield Ct Project Number 2267-E Reported <br /> Mountain View CA, 94040 Project Manager John O'Rourke 02/12/02 07 22 <br />' Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br />' Reporting Spike. Source %REC RPD <br /> Analyte Result Limit Units LeVel Result %REC Limits RPD Limit Notes <br /> Batch 2BO7001 -EPA 5030B [P/TJ <br />' Blank(21307001-BLK1)-�� _ Prepared&Analyzed 02/07/02 <br /> Gasoline Rauge Organics(C6-C10) ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether -- ND 25 -- <br /> Surrogate a a a-7rifluorotohrene 828 100 828 70-130 <br />' LCS(21307001-13SI) _ Prepared&Analyzed 02/07/02 <br /> $tnzene 937 050 ug/1 100 93 7 70-130 <br /> Toluene, 9 30 050 100 930 70-130 <br /> Elhylben,,ene 940 050 100 940 70-130 <br /> 0-1 clics(total) _ - 29 6 050 300 _ -_ 987 70 130 _-- <br /> Surrogate a a a-Tp ifluorololuene 852 100 852 70-130 <br />' LCS(21307001-BS2) Prepared&Analyzed 02/07/02 <br /> Gasoline Range Organics(C6-C10) W_ 233 _ - 50 ug/l 250 932 70-130 <br /> Sill logate a o a-DiJluoiotoluene 8 71 100 871 70-130 <br />' Matrix Spike(21307001-MSI) Source MLB0033-02 Prepared&Analyzed 02/07/02 <br /> Gasoline Range Organics(C6-C10) 540 50 ug/1 550 ND 982 60-140 <br /> Benzene 8 56 050 660 ND 130 60-140 <br />' Toluene 424 050 i' 397 ND 107 60 140 <br /> Ethylbenzene 9 10 050 920 ND 989 60-140 <br /> Xylenes(total) 43 0 050 46 l ND 93 3 60-140 <br /> Surrogate aaa-Dilnotololuene 101 100 101 70-130 <br /> Matrix Spike Dup(21307001-MS131) -----Source MLB0033-02 _ Prepared&Analyzed 02/07/02 <br /> Gasoline Range Oiganics(C6-C 10) 562 50 ug/l 550 ND 102 60-140 399 25 <br />' Benzene 892 0 50 6 60 ND 135 60-140 4 12 25 <br /> Toluene, 44 1 050 397 ND ill 60-140 393 25 <br /> Ethylbenzenc, 9 76 050 920 ND 106 60-t40 700 25 <br />' Xylencs(total) ---- _ 477 050 46 1 ND —103 60-140 10 4 25 <br /> Surrogate aaa-lielirototoluene 104 100 104 70130 <br />' equoia Analytical - Morgan Hili The results in this repot t apply to the samples analyzed tit accordance with the chain of <br /> custody document This analytical i eport must be i eproduced in its entirety <br /> Page Page 5 of 8 <br />