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Sequoia <br />Analytical <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 92 1 -0 100 <br />www.sequoialabs.com <br />Kleinfelder - Stockton Project: Trade Way <br />12825 East Myrtle Street Project Number: 20-3978-03.CH-V Reported: <br />Stockton CA, 95205 Project Manager: Joe Zilles 06/04/02 14:06 <br />Semivolatile Fuel Identification by DHS LUFT - Quality Control <br />Sequoia Analytical - Sacramento <br />Reporting Spike Source °/6REC RPD <br />\nalyte Result Limit Units Level Result %RFC Limits RPD Limit Notes <br />Batch 2050317 - EPA 3550B <br />Blank (2050317-BLKI) <br />Prepared: 05/31/02 Analyzed: 06/01/02 <br />Diesel Range Organics (C10 -C28) <br />ND <br />1.0 mg/kg <br />let -A (C9 -C 17) <br />ND <br />2.0 " <br />IP -8 (C9 -C16) <br />ND <br />2.0 " <br />Motor Oil (C I 6-C36) <br />ND <br />2.0 " <br />IP -4 (C9 -C14) <br />ND <br />2.0 " <br />IP -5 (C9 -C16) <br />ND <br />2.0 " <br />Kerosene (CIO -C16) <br />ND <br />2.0 " <br />Hydraulic Oil (C16 -C36) <br />ND <br />2.0 " <br />Unidentified Extractable Hydrocarbons <br />ND <br />2.0 " <br />Surrogate:Octacosane <br />0.573 <br />0.667 86 50-150 <br />LCS (2050317 -BSI) Prepared: 05/31/02 Analyzed: 06/01/02 <br />Diesel Range Organics (C10 -C28) 14.3 1.0 mg/kg 16.7 86 60-140 <br />Surrogate. Octacosane 0.576 110.667 86 50-150 <br />Matrix Spike (2050317 -MSI) Source: S205280-01 Prepared: 05/31/02 Analyzed: 06/03/02 <br />Diesel Range Organics (CI O -C28) 13.0 1.0 mg/kg 16.7 ND 78 50-150 <br />Surrogate:Octacosane 0.488 0.667 73 50-150 <br />Matrix Spike Dup (2050317-MSD1) Source: S205280-01 Prepared: 05/31/02 Analyzed: 06/03/02 <br />Diesel Range Organics (C 10-C28) 14.6 1.0 mg/kg 16.7 ND 87 50-150 12 50 <br />Surrogate:Octacosane 0.471 0.667 71 50-150 <br />Sequoia Analytical - Sacramento 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 9 of 13 <br />