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QC Sample Results <br />Client: Stantec Consulting Corp. TestAmerica Job ID: 720-86164-1 <br />Project/Site: Former Chase Chevrolet <br />Method: 8260B/CA LUFTMS - 8260B / CA LUFT MS (Continued) <br />Lab Sample ID: LCSD 720-243383/6 <br />Matrix: Water <br />, Analysis Batch: 243383 <br />Analyte <br />Spike <br />Added <br />LCSD LCSD <br />Result Qualifier <br />Client Sample ID: Lab Control Sample Dup <br />Prep Type: Total/NA <br />%Rec. RPD <br />Unit D %Rec Limits RPD Limit <br />Methyl tert-butyl ether 25.0 22.3 ug/L 89 70 - 130 5 20 <br />Benzene 25.0 24.2 ug/L 97 84 _ 130 10 20 <br />Ethylbenzene 25.0 23.5 ug/L 94 87 - 127 6 20 <br />Naphthalene 25.0 25.0 ug/L 100 81 -130 9 20 <br />Toluene 25.0 23.7 ug/L 95 85 - 120 8 20 <br />m-Xylene & p-Xylene 25.0 22.7 ug/L 91 86 - 126 5 20 <br />o-Xylene 25.0 23.3 ug/L 93 86 - 130 6 20 <br />Xylenes, Total 50.0 46.0 ug/L 92 86- 130 5 20 <br />LCSD LCSD <br />Surrogate %Recovery Qualifier Limits <br />4-Bromofluorobenzene 86 67- 130 <br />1,2-Dichloroethane-d4 (Surr) 92 72- 130 <br />Toluene-d8 (Sun-) 93 70- 130 <br />Lab Sample ID: LCSD 720-243383/8 <br />Matrix: Water <br />Analysis Batch: 243383 <br />Analyte <br />Client Sample ID: Lab Control Sample Dup <br />Prep Type: Total/NA <br /> <br />Spike LCSD LCSD %Rec. RPD <br /> <br />Added Result Qualifier Unit D %Rec Limits RPD Limit <br />Gasoline Range Organics (GRO) 500 458 ug/L 92 77 - 130 3 20 <br />' -C4-C12 <br />LCSD LCSD <br />Surrogate %Recovery Qualifier Limits <br />4-Bromofluorobenzene 86 67- 130 <br />1,2-Dichloroethane-d4 (Sun-) 94 72- 130 <br />Toluene-d8 (Surr) 95 70- 130 <br />Lab Sample ID: 720-86164-1 MS <br />Matrix: Solid <br />Analysis Batch: 243844 <br />Sample Sample <br />Analyte Result Qualifier <br />Spike <br />Added <br />MS MS <br />Result Qualifier Unit <br />Client Sample ID: SB-1-5 <br />Prep Type: Total/NA <br />Prep Batch: 243792 <br />%Rec. <br />D %Rec Limits <br />Methyl tert-butyl ether ND 47.4 43.8 ug/Kg 92 69 - 130 <br />Benzene ND 47.4 39.9 ug/Kg 84 70 - 130 <br />Ethylbenzene ND 47.4 37.7 ug/Kg 79 65 - 130 <br />Naphthalene ND 47.4 42.5 ug/Kg 89 45 - 146 <br />Toluene ND 47.4 38.0 ug/Kg 80 70 - 130 <br />m-Xylene & p-Xylene ND 47.4 37.1 ug/Kg 78 70 - 130 <br />o-Xylene ND 47.4 38.3 ug/Kg 81 68 _ 130 <br />Xylenes, Total ND 94.9 75.3 ug/Kg 79 70 - 130 <br />MS MS <br />Surrogate %Recovery Qualifier Limits <br />4-Bromofluorobenzene 90 45 - 131 <br />1,2-Dichloroethane-d4 (Surr) 100 60 - 140 <br />Toluene-d8 (Surr) 97 58 - 140 <br />TestAmerica Pleasanton <br />• • <br /> Page 22 of 38 5/11/2018