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Quality Control Results <br /> Client: Earth Tech, Inc. Job Number: 720-14778-1 <br /> Lab Control Spike/ Method: 8270C <br /> Lab Control Spike Duplicate Recovery Report-Batch: 720-36987 Preparation: 3510C <br /> LCS Lab Sample ID:LCS 720-36987/2-A Analysis Batch: 720-37170 Instrument ID: Sat 21<1 <br /> Client Matrix: Water Prep Batch: 720-36987 Lab File ID: d:\data\200806\062308\lcs( <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 1000 mL <br /> ' Date Analyzed: 06/23/2008 1227 Final Weight/Volume: 1 mL <br /> Date Prepared: 06/19/2008 1308 Injection Volume: 1.0 uL <br /> LCSD Lab Sample ID:LCSD 720-36987/3-A Analysis Batch: 720-37170 Instrument ID: Sat 2K1 <br /> Client Matrix: Water Prep Batch: 720-36987 Lab File ID: d:\data\200806\062308\LCS <br /> Dilution: 1.0 Units: ug/L Initial WeighWolume: 1000 mL <br /> Date Analyzed: 06/23/2008 1301 Final Weight/Volume: 1 mL <br /> Date Prepared: 06/19/2008 1308 Injection Volume: 1.0 uL <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Phenol 37 36 12-89 1 35 <br /> Bis(2-chloroethyl)ether 71 72 43-126 1 35 <br /> 2-Chlorophenol 66 67 23-134 2 25 <br /> 1,3-Dichlorobenzene 56 55 17-153 1 35 <br /> 1,4-Dichlorobenzene 51 52 36-97 2 30 <br /> Benzyl alcohol 72 68 10- 130 6 35 <br /> 1,2-Dichlorobenzene 63 61 37-92 2 35 <br /> 2-Methylphenol 65 63 10- 130 2 35 <br /> 4-Methylphenol 61 58 10-130 5 35 <br /> N-Nitrosodi-n-propylamine 70 70 10-130 0 34 <br /> Hexachloroethane 56 54 30-103 3 35 <br /> Nitrobenzene 76 71 48-106 7 35 <br /> Isophorone 88 73 47- 180 18 35 <br /> 2-Nitrophenol 74 64 45-166 14 35 <br /> 2,4-Dimethylphenol 77 71 42- 109 8 35 <br /> ' Bis(2-chloroethoxy)methane 78 72 43- 164 8 35 <br /> 2,4-Dichlorophenol 81 71 53- 121 14 35 <br /> 1,2,4-Trichlorobenzene 71 67 44- 142 6 35 <br /> Naphthalene 70 65 36-119 7 35 <br /> 4-Chloroaniline 45 43 10-130 5 35 <br /> Hexachlorobutadiene 59 61 38- 102 2 35 <br /> 4-Chloro-3-methylphenol 82 77 22- 147 6 31 <br /> 2-Methylnaphthalene 74 70 10- 130 5 35 <br /> Hexachlorocyclopentadiene 79 77 10- 130 2 35 <br /> 2,4,6-Trichlorophenol 75 77 47- 108 2 35 <br /> 2,4,5-Trichlorophenol 85 79 20- 120 8 35 <br /> 2-Chloronaphthalene 82 68 10- 130 19 35 <br /> 2-Nitroaniline 83 74 10- 130 12 35 <br /> Dimethyl phthalate 100 96 10- 130 5 35 <br /> Acenaphthylene 94 85 54-126 9 35 <br /> ' 3-Nitroaniline 84 86 10-130 3 35 <br /> Acenaphthene 79 74 48- 104 7 30 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> tTestAmerica San Francisco Page 41 of 51 <br />