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' • 1455 McDowell Blvd,North Ste Sequoia <br /> Petaluma,CA 949544 <br /> Se <br /> v `1 (707)792-1865 <br /> FAX(7 -0342 <br /> Analytical <br /> www.sequmoialabs.com <br /> 1 MACTEC E&C-Petaluma ProjectGeneral Commercial P412379 <br /> 5341 Old Redwood Highway,Suite 300 Project Number:Sears/Tracy-UST/AST-3205040383.02 Reported: <br /> ' Petaluma CA,94954 Project Monager.Gary Lieberman 01/05/05 10:53 <br /> Extractable Hydrocarbons by EPA 8015B-Quality Control <br /> ' Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> ' Batch 4120479-CA LUFT-orb shaker/EPA 80156-SVOA <br /> Blank(4120479-BLKI) Prepared: 12/23/04 Analyzed: 12/27/04 <br /> Diesel Range Organics(C10-C28) ND 5.0 mg/kg <br /> ' Motor Oil Range Organics(C24-C36) NO 10 " <br /> Surrogate:Octacosane 1.19 1.67 71 50-135 <br /> Laboratory Control Sample(4120479-BS1) Prepared: 12/23/04 Analyzed: 12/27/04 <br /> Diesel Range Organics(C10-C28) 29.8 5.0 mg/kg 33.3 89 46-118 <br /> Surrogate:Octacosane 1.20 1.67 72 50-13S <br /> Matrix Spike(4120479-MS1) Source-P412379-06 Prepared: 12/23/04 Analyzed:12/27/04 <br /> Diesel Range Organics(CIO-C28) 30.0 5.0 mg/kg 33.3 2.8 82 46-118 <br /> Surrogate:Octacmane 1.07 1.67 64 50.135 <br /> Matrix Spike Du (4120479-MSDI) Source:P412379-06N Prepared: 12/23/04 Analyzed: 12/27/04 <br /> Diesel Range Organics(C10-C28) 27.7 5.0 mg/kg 33.3 2.8 75 46-118 8 35 <br /> Surrogate:Octacosane 0.938 1.67 56 50-135 <br /> 1 <br /> 1 <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 must be reproduced in its entirety. <br /> 1 <br /> Page 34 of 46 <br />