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1455 McDowell Blvd,North Ste D <br /> Sequoia Petahun 7)792-4954 <br /> 865 <br /> 707 792-1865 <br /> Analytical <br /> FAX.Wqu7ialabs 342 <br /> www.uquoialabs.com <br /> MACTEC E&C-Petaluma Project:Geneml Commercial P412379 <br /> 5341 Old Redwood Highway,Suite 300 Project Number:SearsfTracy-UST/AST-3205040383.02 Reported: <br /> Petaluma CA,94954 Project Manager:Gwy Lieberman 01/05/05 10:53 <br /> Total Metals by EPA 6000/7000 Series Methods <br /> Sequoia Analytical-Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> 0452SS001 (P412379-01)Soil Sampled: 12/21/0413:45 Received:l2/22/0409:20 <br /> Mercury 0.016 0.016 mg/kg I 4120470 12/27/04 12/28/04 EPA 7471A <br /> Antimony ND 4.5 4120476 12/27/04 12/27/04 EPA 6010B <br /> Arsenic 9.2 7.5 „ <br /> Barium 180 0.75 " <br /> Beryllium 0.46 0.075 <br /> Cadmium NO 0.75 " <br /> Chromium 28 0.75 •, „ <br /> Cobalt 10 0.52 " <br /> Copper 28 1.5 „ <br /> Lead 6.5 5.6 <br /> Molybdenum ND 1.5 <br /> Nickel 35 2.2 <br /> Selenium ND 7.5 „ <br /> Silver ND 0.52 " <br /> Thallium NO 7.5 <br /> Vanadium 35 0.75 " <br /> Zinc 48 1.5 " <br /> 0452SS003(P412379-02)Soil Sampled: 12/21/04 14:05 Received: 12/22/04 09:20 <br /> Mercury <br /> 0.047 0.017 mg/kg 1 4120470 12/27/04 12/28/04 EPA 7471A <br /> Antimony ND 4.8 11 4120476 1227/04 12/27/04 EPA 6010B <br /> Arsenic NO 8.1 " <br /> Barium 100 0.81 " <br /> Beryllium 0.20 0.081 <br /> Cadmium NO 0.81 " <br /> Chromium 18 0.81 " <br /> Cobalt 6.9 0.56 " <br /> Copper 20 1.6 <br /> Lead ND 6.0 <br /> Molybdenum ND 1.6 <br /> Nickel 21 2-4 <br /> Selenium <br /> ND 8.1 " <br /> Silver ND 0.56 <br /> Thallium ND 8.1 <br /> Vanadium 20 0.81 " <br /> Zinc 44 1.6 " <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report most be reproduced in its entirety. <br /> Page 5 of 46 <br />