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Sequoia • 1455 McDowell Blvd, th Step <br /> Petaluma,uma,CCA 94954 <br /> (707)792-1865 <br /> Analytical FAX(707) labs.w2 <br /> www.sequnialabs.wm <br /> 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 Manager:Gary Lieberman 01/05/05 10:53 <br /> Semivolatile Organic Compounds by EPA Method 8270C-Quality Control <br /> I Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4120473-EPA 3545 ASE/EPA 8270C <br /> Blank(4120473-BLK1) Prepared: 12/22/04 Analyzed: 12/28/04 <br /> Surrogate:2,4,6-Trtbr n phenol 2860 ug/kg 5000 57 57-134 <br /> Surrogate:Terpherryl-414 2600 3330 78 60-151 <br /> Laboratory Control Sample(4120473-BS1) Prepared: 1222/04 Analyzed: 12/28/04 <br /> Acenaphthene 2320 330 ug/kg 3330 70 50-118 <br /> 4-Chloro-3-methylphenol 2600 660 11 3330 78 52-126 <br /> 2-Chlorophenol 1960 330 3330 59 38-107 <br /> 1,4-Dichlorobenzene 1740 330 3330 52 34-106 <br /> 2,4-Dinitrotoluene 3200 330 3330 96 59-140 <br /> 4-Nitrophenol 3070 1700 3330 92 58-131 <br /> N-Niunsodi-n-propylamine 2030 330 3330 61 40-113 <br /> Pentachlorophenol 2320 1700 3330 70 51-125 <br /> Phenol 1990 330 " 3330 60 37-107 <br /> Pyrene 2920 330 3330 88 62-143 <br /> 1,2,4-Trichlorobenzene 2010 330 3330 60 39-118 <br /> Surrogate:2-Fluoropherml 2800 5000 56 30-102 <br /> Surrogate.Phenol-db 2850 5000 57 33-110 <br /> Surrogate:Nitrobenzene-d5 1220 3330 67 38-117 <br /> Surrogate:2-Fluorobiphenyl 2230 3330 67 48-117 <br /> Surrogate:2,4,6-Tribromophenol 3870 5000 77 57-134 <br /> Surrogate:Terphenyl-d14 2960 3330 89 60-151 <br /> Matrix Spike(4120473-MSI) Source:P411179-01 Prepared: 12/22/04 Analyzed: 12/28/04 <br /> Acenaphthene 2440 330 ug/kg 3330 ND 73 46-124 <br /> 4-Chloro-3-methylphenol 2750 660 3330 ND 83 56-124 <br /> 2-Chlorophenol 1800 330 3330 ND 54 24-117 <br /> I1,4-Dichlorobenzene 1590 330 3330 ND 48 10-118 <br /> 2,4-Dinitrotcluene 3210 330 3330 ND 96 62-134 <br /> 4-Nitrophwol 2960 1700 3330 ND 89 42-142 <br /> N-Nitrosodi-n-propylamine 1940 330 3330 ND 58 59-123 QM02 <br /> Pentachlorophenol 2360 1700 11 3330 ND 71 53-124 <br /> Phenol 1860 330 3330 ND 56 27-115 <br /> Pymne 2860 330 3330 ND 86 60-142 <br /> ' 1,2,4-Trichloroluluxne 1890 330 3330 ND 57 26-127 <br /> Surrogate:2-Fluorophenol 2410 5000 48 30-102 <br /> Surrogate:Phenol-d6 2690 5000 54 33-110 <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 entirely. <br /> Page 43 of 46 <br />