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404 N Wiget Lane <br /> Walnut Creek CA 94598 <br /> Sequoia (9z5)988-9600 <br /> FAX(9z5)988-9673 <br /> Analytical _ wwwsequolalabscom <br /> OW <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron N 9-2033 Reported <br /> Dublin CA,94568 Pro9ect Manager Deanna L Harding 15-Jun-01 10 47 <br /> Semivolatile Organic Compounds by EPA Method 8270C - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limrt Units bevel Result %REC Limits RPD Limit Notes <br /> Batch 1E22006-EPA 3510B Sep Funnel <br /> Blank(1E22006-BLKI) Prepared 22-May-01 Analyzed 23-May-01 <br /> 4,6-Duutro-2-methylphenol ND 10 ug11 <br /> 2,4-Dnutrophenol ND 10 " <br /> 2 4-Dinitrototuene ND 10 •' <br /> 2,6-Dmitrotoluene ND 10 " <br /> Di-n-octyl phthalate ND 10 " <br /> Fluoranthene ND 50 <br /> Fluorene ND 50 <br /> Hexachlorobenzene ND 10 <br /> Hexachlorobutadiene ND 10 " <br /> Hexachlorocyclopentadiene ND 10 " <br /> Wloroethane ND 50 <br /> (1,2,3-cd)pyrene ND 10 <br /> Isophorone ND 50 <br /> 2-Methy1naphthalene ND 50 <br /> 2-Methylphenol ND 50 <br /> 4-Methylphenol ND 50 <br /> Naphthalene ND 50 " <br /> 2-Nttroarohne ND 10 " <br /> 3-Nitroaruime ND 10 " <br /> 4-Nitroaruhne ND 20 " <br /> Nitrobenzene ND 50 " <br /> 2-Nitrophenol ND 50 " <br /> 4-Nitrophenol ND 10 " <br /> N-Nitrosodimethylamme ND 50 " <br /> N-Nitrosodiphenylamme ND 50 <br /> N-Nitrosodi-n-propylamme ND 50 " <br /> Pentachlorophenol ND 10 <br /> Phenanthrene ND so " <br /> Phenol ND 50 " <br /> Pyrene ND 50 " <br /> 1,2 4-Tnehlorobenzene ND 50 " <br /> 2,4,5 Trichlorophenol ND 10 " <br /> 2,4,6-Tnchlorophenol ND 10 ' <br /> Surrogate 2-Fluorophenol 468 150 312 21-110 <br /> uoia Analytical-Walnut Creels The results in this report apply to the samples analyned In accordance with the churn of <br /> custody document This analytical reporl must be reproduced in its entirely <br /> Page 20 of 24 <br /> .P41 <br />