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Quality Control Results <br /> Client: Geomatrix Consultants Inc. Job Number: 720-9514-1 <br /> Lab Control Spike/ Method: 8270C <br /> Lab Control Spike Duplicate Recovery Report- Batch: 720-22947 Preparation: 3550B <br /> LCS Lab Sample ID:LCS 720-22947/2-A Analysis Batch: 720-23002 Instrument ID: Latest Chemstation <br /> Client Matrix: Solid Prep Batch: 720-22947 Lab File ID: 062207003.D <br /> Dilution: 1.0 Units: ug/Kg Initial Weight/Volume: 30.16 g <br /> Date Analyzed: 06/22/2007 1207 Final Weight/Volume: 1 mL <br /> Date Prepared: 06/21/2007 1601 Injection Volume: <br /> LCSD Lab Sample ID:LCSD 720-22947/3-A Analysis Batch: 720-23002 Instrument ID: Latest Chemstation <br /> Client Matrix: Solid Prep Batch: 720-22947 Lab File ID: 062207004.D <br /> Dilution: 1.0 Units: ug/Kg Initial Weight/Volume: 30.34 g <br /> Date Analyzed: 06/22/2007 1234 Final Weight/Volume: 1 mL <br /> Date Prepared: 06/21/2007 1601 Injection Volume: <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Naphthalene 68 75 21 - 133 9 35 <br /> Acenaphthene 67 66 40- 145 2 35 <br /> Acenaphthylene 74 74 33- 145 1 35 <br /> Fluorene 75 74 50- 121 1 35 <br /> Phenanthrene 86 76 10- 130 13 35 <br /> Anthracene 74 66 27- 133 12 35 <br /> Benzo[a]anthracene 84 84 33- 143 0 35 <br /> Chrysene 67 68 17- 168 1 35 <br /> Benzo[a]pyrene 72 71 17- 163 2 35 <br /> Benzo[b]fluoranthene 76 78 24- 159 1 35 <br /> Benzo[k]fluoranthene 68 66 11 - 162 3 35 <br /> Benzo[g,h,i]perylene 77 76 9-219 2 35 <br /> Indeno[1,2,3-cd]pyrene 81 80 9- 171 2 35 <br /> Fluoranthene 86 75 26- 137 14 35 <br /> Pyrene 76 77 52- 115 0 35 <br /> Dibenz(a,h)anthracene 72 71 9- 171 2 35 <br /> Surrogate LCS% Rec LCSD % Rec Acceptance Limits <br /> 2-Fluorobiphenyl 67 75 30- 115 <br /> Terphenyl-d14 81 82 18- 137 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> STL San Francisco Page 193 of 222 06/25/2007 <br />