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404 N Wiget lane <br /> Walnut Geek,CA 94598 <br /> Sequoia (925)988-W" <br /> FAX(925)988-%73 <br /> �,,,� Analytical www sequoialabs corn <br /> 1ler Ryan,Inc -Dubhn Project Chevron <br /> 6747 Sierra Court Suite J Protect Number Chevron(# 9-2033 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12-Mar-01 07 45 <br /> Semivolatile Organic Compounds by EPA Method 8270C - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunn Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1B20010- EPA 3510B Sep Funnel <br /> LCS(1B20010-BS2) Prepared 21-Feb-01 Analyzed 23-Feb-01 <br /> Acenaphthene 899 50 ug/I 100 899 46-118 <br /> 4-Chloro-3-methylphenol 143 50 150 953 23-97 <br /> 2-Chlorophenol 123 5 0 150 820 27-123 <br /> 1,4-Dichlorobenzene 811 10 100 811 36-97 <br /> 2,4-Dmitrotoluene 881 10 too 881 24-96 <br /> 4-Nitrophenol 485 10 150 323 10-80 <br /> N-Nitrosodr-n-propylanune 102 50 100 102 41-]l6 <br /> Pentachlorophenol 124 10 150 827 9-103 <br /> Phenol 538 5 0 " 150 359 12-110 <br /> Pyrene 882 5 0 100 882 26-127 <br /> 1,2,4-Trrchlorobenzene 923 50 100 923 39-98 <br /> Surrogate 2-Fluorophenol 896 150 597 21-110 <br /> Aft <br /> gate Phenol-d6 563 lo 150 375 10110 <br /> gate Nitrobenzene-d5 107 100 107 35-114 <br /> Surrogate 2-Fluorobtphenyl 972 100 972 43-116 <br /> Surrogate 2 4 6-Ti7bromophenol 153 150 102 10-123 <br /> Surrogate p-Terphenyl-d14 898 100 898 33-141 <br /> LCS Dup (1B20010-BSD1) Prepared 20-Feb-01 Analyzed 23-Feb-01 <br /> Acenaphthene 845 50 ngA 100 845 46-118 280 30 <br /> 4-Chloro-3-methylphenol 141 so 150 940 23-97 141 30 <br /> 2-Chlorophenol 121 50 150 807 27-123 325 30 <br /> 1,4-Dichlorobenzene 67 5 10 100 675 36-97 905 30 <br /> 2,4-Duutrotoluene 871 10 100 871 24-96 0 923 30 <br /> 4-Nitrophenol 495 10 150 330 10-80 124 30 <br /> N-Ndrosods-n-propylarntne 102 50 100 102 41-116 3 85 30 <br /> Pentachlorophenol 134 10 150 893 9-103 0 30 <br /> Phenol 550 so 150 367 12-110 853 30 <br /> Pyrene 915 50 100 915 26-127 0 30 <br /> 1,2,4-Tnehlorobenzene 794 50 100 794 39-98 611 30 <br /> Surrogate 2-Fluorophenol 866 150 577 11-110 <br /> Surrogate Phenol-d6 534 150 356 10-110 <br /> Surrogate Nitrobenzene-d5 979 100 979 35-114 <br /> Surrogate 2-Fluorobrphenyl 847 100 847 43-116 <br /> Surrogate 2 4 6-7rlbromophenol 148 150 987 10-123 <br /> Sequoia Analytical-Walnut Creels The results in this report apply to the samples analyzed in accordance wrth the chain of <br /> custody document Dos analytical report must be reproduced in its entirety <br /> Page 20 of 25 <br />