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1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> ' Analytical (707)792-1865 <br /> FAX(707)792-0342 <br /> www.sequoialabs.corn <br /> MACTEC E&C-Petaluma Projecr.General Commercial P412379 <br /> 5341 Old Redwood Highway,Suite 300 Project Number.Sears/Tracy-UST/AST-3205040383.02 Reported: <br /> Petaluma CA,94954 Project Manager:Gary Lieberman 01/05/05 10:53 <br /> Semivolatile Organic Compounds by EPA Method 8270C-Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPI) <br /> Analyte Result Limit Units Level Result %REC limits RPD Limit Notes <br /> Batch 4120473-EPA 3545 ASE/EPA 8270C <br /> Matrix Spike(4120473-MS1) Source:P412379-01 Prepared: 12/22/04 Analyzed: 12/28/04 <br /> Surrogate:Nitrobemene-d5 1030 ug/kg 3330 61 38-117 <br /> ' Surrogate:1-Fluorobiphenyl 1250 a 3330 68 48-117 <br /> Surrogate:1,4,6-Tribromophenol 3810 5000 76 57-134 <br /> Surrogate:Terphenyl-d14 1840 3330 85 60-151 <br /> .Matrix Spike Dup(4120473-MSD1) Source:P412379-01 Prepared: 12/22/04 Analyzed: 12/28/04 <br /> Acenaphthene 2510 330 ug/kg 3330 ND 75 46-124 3 26 <br /> 4-Chloro-3-methylphenol 2800 660 3330 ND 84 56-124 2 21 <br /> 2-Chlorophenol 1910 330 3330 ND 57 24-117 6 27 <br /> 1,4-Dichlorobenzene 1560 330 3330 ND 47 10-118 2 25 <br /> 2,4-Dinitmtoluene 3280 330 3330 ND 98 62-134 2 15 <br /> 4-Nitrophenol 2880 1700 3330 ND 86 42-142 3 23 <br /> N-Nitrosodi-n-propylamine 2060 330 3330 ND 62 59-123 6 31 <br /> Pentachlorophenol 2350 1700 3330 ND 71 53-124 0.4 43 <br /> Phenol 1950 330 3330 ND 59 27-115 5 21 <br /> ' Pyrene 2890 330 3330 ND 87 60-142 1 26 <br /> 1,2,4-Trichlmobenzene 1990 330 3330 ND 60 26-127 5 30 <br /> Surrogate:2-Fluoropheml 2570 5000 51 30-101 <br /> Surrogate:Phenol-d6 2840 5000 57 33-110 <br /> Surrogate:Nitrobenzene-d5 1160 3330 65 38-117 <br /> Surrogate:2-Fluorobiphenyl 2350 3330 71 48-117 <br /> Surrogate:2,4,6-Tribromophenol 3910 5000 78 57-134 <br /> Surrogate:Terphenyld14 2910 3330 88 60-151 <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 /> Page 44 of 46 <br />