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QC Sample Results <br /> Client: Dyserk Environmental, Inc TestAmerica Job ID: 720-86460-1 <br /> Project/Site: Zega Building <br /> Method: 8081A - Organochlorine Pesticides (GC) (Continued) <br /> Lab Sample ID: 720-86462-A-21-B MSD Client Sample ID: Matrix Spike Duplicate <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 244529 Prep Batch: 244426 <br /> Sample Sample Spike MSD MSD %Rec. RPD <br /> Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPO Limit <br /> Heptachlor ND 16.5 13.4 ug/Kg 81 52-120 9 20 <br /> Heptachlor epoxide ND 16.5 16.1 ug1Kg 98 40-120 4 20 <br /> 4,4'-DDT ND 16.5 13.2 uglKg 80 17-144 4 20 <br /> 4,4'-DDE 0.88 J 16.5 16.0 ug/Kg 92 40-120 1 20 <br /> 4,4'-DDD ND 16.5 14.7 ug/Kg 89 40-120 1 20 <br /> Endosulfan I ND 16.5 15.9 ug/Kg 97 40-120 9 20 <br /> Endosulfan II ND 16.5 15.3 ug/Kg 93 40-120 3 30 <br /> alpha-BHC ND 16.5 12.5 ug/Kg 76 40-120 6 20 <br /> beta-BHC ND 16.5 15.2 ug/Kg 92 40-120 15 20 <br /> gamma-BHC(Lindane) ND 16.5 15.0 ug/Kg 91 58-120 1 20 <br /> delta-BHC ND 16.5 11.8 ug/Kg 71 40-120 14 20 <br /> Endosulfan sulfate ND 16.5 15.4 ug/Kg 93 40-120 5 20 <br /> Methoxychlor ND 16.5 16.1 ug/Kg 98 40-120 3 20 <br /> cis-Chlordane 1.8 J 16.5 19.7 p ug/Kg 109 40-120 12 20 <br /> trans-Chlordane 1.0 J p 16.5 17.8 ug/Kg 102 40-120 5 20 <br /> MSD MSD <br /> Surrogate %Recovery Qualifier Limits <br /> Tetrachlaro-m-xylene 67 21--145 <br /> DCB Decachlorobiphenyl 97 21-136 <br /> Method: 8082 - Polychlorinated Biphenyls (PCBs) by Gas Chromatography <br /> Lab Sample ID: MB 720-244427/1-A Client Sample ID: Method Blank <br /> Matrix: Solid Prep Type:Total/NA <br /> Analysis Batch: 244504 Prep Batch: 244427 <br /> MB MB <br /> Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac <br /> PCB-1016 ND 50 1'.8 ug/Kg -6-5/18118-09 46 05119/18 16:46 1 <br /> PCB-1221 ND 50 1.8 ug/Kg 05/18118 09.46 05/19/18 16:46 1 <br /> PCB-1232 ND 50 1.8 ug/Kg 05/18118 09:46 05/19/18 16:46 1 <br /> PCB-1242 ND 50 1.8 ug/Kg 05/18/18 09:46 05/19/18 16:46 1 <br /> PCB-1248 ND 50 1.8 ug/Kg 05/18/1 8 09:46 05/19118 16:46 1 <br /> PCB-1254 ND 50 1.8 ug/Kg 05/18/18 09:46 05119118 16:46 1 <br /> PCB-1260 ND 50 5.3 ug/Kg 05/18/18 09:46 0511.9/18 16:46 1 <br /> MB MB <br /> Surrogate %Recovery Qualifier Limits Prepared Analyzed Dil Fac <br /> Tetrachfore-m-xylene 67 45-132 65/18/18 09:46 05119/18 16:46 1 <br /> DCB Decachlorobiphenyl 91 42-146 05118118 09:46 05119118 16:46 1 <br /> Lab Sample ID: LCS 720-24442712-A Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: TotaIINA <br /> Analysis Batch: 244504 Prep Batch: 244427 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> PCB 1016- - 133 102 ug/Kg 76 65-121 <br /> PCB-1260 133 113 ug/Kg 85 68-127 <br /> TestAmerica Pleasanton <br /> Page 56 of 75 5/2112018 <br />