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404 N Wlget Lane <br /> Walnut Geek CA 94598 <br /> ` Sequoia FAX(925)988- <br /> D- Analytical www sequolalabs com <br /> Gettler Ryan Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite j Project Number Chevron 49-2033 Reported <br /> Dublin CA, 94568 Project Manager Deanna L Harding 12-Mar-01 0745 <br /> Semivolatile Organic Compounds by EPA Method 8270C- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lint Notes <br /> Batch 1 B200 10-EPA 3510B Sep Funnel <br /> Blank(IB20010-BLK2) Prepared 21-Feb-01 Analyzed 23-Feb-01 <br /> Phenol ND 50 us/l <br /> Pyrene ND 50 <br /> 1 2 4 Tnchlorobenzene ND 50 " <br /> 2 4 5-Tnchlorophenol ND 10 <br /> 2 4,6-Tnehlorophenol ND 10 " <br /> Surrogate 2-Fluorophenol 808 150 539 21-110 <br /> Surrogate Phenol-d6 490 150 32 7 10-110 <br /> Surrogate Nirrobemene-d5 978 100 978 35-114 <br /> Surrogate 2Fluorobrphenyl 912 100 912 43-116 <br /> Surrvgate 2 4 6-Tnbromcphen of 137 150 913 10-113 <br /> Surrogate p-Terphenyl-d14 901 100 901 33-141 <br /> LCS(1B20010-BS1) Prepared 20-Feb-01 Analyzed 23-Feb-01 <br /> Acenaphthene 869 5 0 ug/1 100 869 46-118 <br /> 4-Chloro-3-methylphenol 143 5 0 150 953 23-97 <br /> 2-Chlorophenol 125 50 150 833 27-123 <br /> 1,4-Dichlorobenzene 739 to 100 739 36-97 <br /> 2,4 Duntrotoluene 963 10 " 100 863 24-96 <br /> 4-NAmphenol 437 10 150 29 1 10-80 <br /> N-Nitrosods-n-propylamine 106 50 100 106 41-116 <br /> Pentachlorophenol 134 10 150 893 9-103 <br /> Phenol 505 so 150 337 12-110 <br /> Pyrene 91 5 so loo 91 5 26-127 <br /> 1,2,4-Tnchlorabenzene 844 50 100 844 39-98 <br /> Surrogate 2 Fluorophenol 869 150 579 21-110 <br /> Surrogate Phenol-d6 524 150 349 10-110 <br /> Surrogate Nitrobenzene-d5 107 100 107 35-114 <br /> Surrogate 2-Fluorobrphenyl 918 100 918 43-116 <br /> Surrogate 2 4 6-Trvbromophenol 157 150 105 10-123 <br /> Surrogate p-Terphenyl--d14 - - - — - 934 - -- - - --100 934 - -33-141 -- <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety 0 <br /> Page 19 of 25 <br />