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vd <br /> Sequoia 1455 McDowell tale <br /> Petaluma, <br /> CA 9544 <br /> 79 9494 <br /> (707)792-ISfiS <br /> 11Ww� Analytical FAX(707)792-0 <br /> wwsequoiakabs comom <br /> ler-Ryan/Geostrategies(1) Project Unoca](4) <br /> Sierra Court, Suite J Protect Number Former Unocal#0187, Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/24/02 16 38 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - San Carlos <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2050034-EPA 5030B JP/T <br /> Matrix Spike Dup(2050034-MSD1) Source L205039-29 Prepared&Analyzed 05/15/02 <br /> Methyl tert-butyl ether 41 7 10 ug/l 500 ND 834 60-140 441 25 <br /> Surrogate 1,2-Dichloroethone-d4 481 500 962 70-130 <br /> s <br /> �ia Analytical -San Carlos 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 in its entirety <br /> Page 29 of 30 <br />