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404 N Wiget lane <br /> Sequoia Walnut Creek CA 94898 <br /> (925)988-9600 <br /> Iwo Analytical FAX 988-9673 <br /> www 5equaquoialabs Com <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-2033 Reported <br /> Dublin CA,94568 Project Manager Deanna L Handing 15-Jun-01 10 47 <br /> Semivolatlile Organic Compounds by EPA Method 8270C- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporlutg Spike Source %REC RPD <br /> Analyte Result Llnut Units Level Result %R1;C Limits RPD Limit Notes <br /> Batch 1E22006- EPA 3510B Sep Funnel <br /> Blank(IE22006-BLK1) Prepared 22-May-01 Analyzed 23-May-01 <br /> Surrogate Phenol-d6 313 ug/l 150 209 10-110 <br /> Surrogate Nitrobenzene-d5 676 100 676 35-114 <br /> Surrogate 2-Fluorobnphen yl 691 100 691 43-116 <br /> Surrogate 2 4 6-Tnbromophenol 983 150 655 10-113 <br /> Surrogate p-Teiphenyl-d14 865 100 86.5 33-141 <br /> LCS(1E22006-BSI) Prepared 22-May-01 Analyzed 23-May-01 A-01 <br /> Acenaphthene 228 50 ug/l 100 22 8 46-118 <br /> 4-Chloro-3-methylphenol 330 50 150 220 23-97 <br /> 2-Chlorophenol 306 50 150 204 27-123 <br /> 1,4-Dichlorobenzene 207 10 100 207 36-97 <br /> 2,4-Duutrotoluene 207 10 100 207 24-96 <br /> 4-Nitrophenol ND 10 150 267 10-80 <br /> N-Nitrosodi-n-propylarnme 264 50 100 264 41-116 <br /> Pentachlorophenol 252 10 150 168 9-103 <br /> Phenol 120 50 150 800 12-110 <br /> — -Pyrene v - — - 41-6-- --5 0 " — - -100 —41-6 26-127 - -- -12 4-Tnchlorobenzene 229 50 100 229 39-98 <br /> Surrogate 2-Fluorophenol 185 150 123 21-110 <br /> Surrogate Phenol-d6 108 150 720 10-110 <br /> Surrogate Nttrobenzene-d5 248 100 248 35-114 <br /> Surrogate 2-Fluorobtphenyl 245 100 245 43-116 <br /> Surrogate 2 4 6-Tnbromophenol 346 150 231 10-123 <br /> Surrogate p-Terphenyl-d/4 413 100 413 33-141 <br /> LCS Dup (IE22006-BSD1) Prepared 22-May-01 Analyzed 25-May-01 A-01a <br /> Acenaphthene 549 30 ug/1 100 549 46-118 826 30 <br /> 4-Chloro-3-methylphenol 802 50 150 53 5 23-97 934 30 <br /> 2-Chlorophenol 724 50 150 493 27-123 812 30 <br /> 1,4-Dichlorobenzene - - - —466 - -10 -100 - 1 466 f 3697- _770- 30 <br /> 2,4-Dinitrotoluene 565 10 100 56 5 24-96 927 30 <br /> 4-Nitrophenol 218 10 150 14 5 10-80 138 30 <br /> N-Nitrosodi-n-propylamine 580 50 100 580 41-116 749 30 <br /> Pentachlorophenol 870 10 150 580 9-103 110 30 <br /> Phenol 284 50 150 189 12-110 812 30 <br /> Pyrene 588 50 100 588 26-127 343 30 <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical repon7 must be reproduced m its entire <br /> Page 21 of 24 <br />