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h <br /> �� 1885 Jarvis Drive <br /> � \ Sequoia Ota Morgan Hill C 95037 <br /> f — ' `1 (408)777 6 9600 <br /> 09 <br /> Analytical www <br /> seq 8ialabs o <br /> www sequoiala6s co* <br /> Project y, MOF0491 <br /> URS Corporation[Arcot] J ARCO 46100 Trace CA Reported <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number GOC 1 Y-000317 <br /> Sacramento CA,95833 Project Manager Jay Johnson 06/17/05 16 37 <br /> Purgeable Hydrocarbons and Volatile Organic Compounds by EPA method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5F16009-EPA 5030E P/T 1 EPA 8260B <br /> Laboratory Control Sample Dup(5F16009-BSD2) Prepared&Analyzed 06/16/05 <br /> Benzene 1 77 016 ppmv 1 91 93 65-115 5 24 <br /> Ethylbenzene 1 83 0 12 1 81 101 75-135 4 15 <br /> Methyl tert-butyl ether 238 0 14 267 89 65-125 2 20 <br /> Toluene 961 0 13 8 74 110 85-120 3 20 <br /> Xylenes(total) 10 2 0 12 8 88 115 85-125 2 20 <br /> Gasoline Range Organics(C4 C12) 110 14 125 88 70-124 2 20 <br /> Surrogate I2-Dichloroethane-d4 109 119 92 60-135 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the charn of <br /> � <br /> custody document Unless otherwrse stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 10 of 15 <br />