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�, 819 Striker Avenue,Suite 8 <br /> Segroia <br /> Sacramento,CA 95834 <br /> (916)921-9660 <br /> Aila1V$iCal FAX(916)921-0160 <br /> ` www.sequoialabs.coin <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 6100,Tracy,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number. N/A Reported: <br /> 1 Cameron Park CA,95682 Project Manager: Jay Johnson 09/20/01 11:31 <br /> 4 <br /> Industrial Solvents by EPA Method 8015(modified) <br /> t: <br /> Sequoia Analytical-Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B35-44(5109089-011 Soil Sampled:08/29/01 12:50 Received:02/0610116:35 <br /> Methanol ND 1.0 mg/kg 1 1I12011 09/12/01 09/12/01 EPA 8015M <br /> Surrogate:I-Dentanol 86.2% 31-166 " <br /> Surrogate:1-Dentanol(dbwax) 89.0% 49-166 j <br /> B35-58(5109089-02)Soil Sampled:08/30/0110:19 Received:09/06/01 16:3$ _. 1 <br /> Methanol ND 1.0 mg/kg 1 1112011 09/12/01 09/12/01 EPA 8015M <br /> Surrogate:I-Dentanol 92.0% 31-166 " <br /> Surrogate:I-Dentanol(dbwax) 94.4% 49-166 " <br /> B35-65 S109089-03 Soil Sampled:08130/0109:13 Received.09/0610116:35 <br /> Methanol ND 1.0 mg/kg 1 1112011 09/12/01 09/12/01 EPA 8015M <br /> Surrogate:I-pentanol 84.6% 31-166 " <br /> Surrogate:1-pentanol(dbwax) 82.8% 49-166 " <br /> t B35-85(S109089-04)Soil Sampled:08/30/01 10:11 Received:09/0610116:35 <br /> Methanol <br /> 9/06/0116:35 <br /> Methanol ND 1_0 mg/kg 1 1I12011 09/12/01 09/12/01 EPA 8015M s <br /> Surrogate:1-pentanol 95.4% 31-166 " <br /> Surrogate:1-pentanol(dbwax) 99.2% 49-166 " <br /> B35-95(5109089-051 Soil Sampled:08/30/01 11:15 Received:0910610116:35 <br /> Methanol ND 1.0 mg/kg 1 1113010 09/13/01 09/13/01 EPA 8015M <br /> Surrogate:1-pentanol 98.4% 31-166 " <br /> Surrozate:I-pentanol(dbwax) 101% 49-166 " <br /> B35-105(5109089-06)Soil Sampled:08.130101 11:45 Received:09/06/0116:35 { <br /> Methanol ND 1.0 mg/kg 1 1113010 09/13/01 09/13/01 EPA 8015M <br /> Surrogate:I-Dentanol 102% 31-166 " <br /> Surrogate:I-Dentanol(dbwax) 103% 49-166 " <br /> j <br /> i <br /> Sequoia Analytical Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. This analytical report must be reproduced in its entirety. <br /> Page Page 12 of 24 <br />