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QC Sample Results <br />Client: Stantec Consulting Corp. Job ID: 320-67359-1 <br />Project/Site: 7-11 No 20632 (CA) <br />Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) <br />Lab Sample ID: LCS 400-513796/1-A Client Sample ID: Lab Control Sample <br />Matrix: Solid Prep Type: Total/NA <br />Analysis Batch: 513768 Prep Batch: 513796 <br />Spike LCS LCS Rec. <br />Analyte Added Result Qualifier Unit D %Rec Limits <br />1,2,4-Trimethylbenzene 0.0500 0.04613 mg/Kg 92 66-130 <br />1,3,5-Trimethylbenzene 0.0500 0.04605 mg/Kg 92 67-130 <br />Vinyl chloride 0.0500 0.04877 mg/Kg 98 52-132 <br />Xylenes,Total 0.100 0.09027 mg/Kg 90 70-130 <br />LCS LCS <br />Surrogate Recovery Qualifier Limits <br />4-Bromofluorobenzene 97 67-130 <br />Toluene-d8(Surr) 100 76-127 <br />Dibromofluoromethane 101 77-127 <br />Method: 8260B/CA LUFTMS - Volatile Organic Compounds by GUMS <br />Lab Sample ID: MB 320-437997/10 Client Sample ID: Method Blank <br />Matrix: Solid Prep Type: Total/NA <br />Analysis Batch: 437997 <br />MB MB <br />Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac <br />GRO(C4-C12) ND 0.500 mg/Kg 12/03/20 11:59 1 <br />MB MB <br />Surrogate Recovery Qualifier Limits Prepared Analyzed Dil Fac <br />4-Bromofluorobenzene(Surr) 104 70-131 12/03/20 11:59 1 <br />Lab Sample ID: LCS 320-437997/4 Client Sample ID: Lab Control Sample <br />Matrix: Solid Prep Type: Total/NA <br />Analysis Batch: 437997 <br />Spike LCS LCS Rec. <br />Analyte Added Result Qualifier Unit D %Rec Limits <br />GRO(C4-C12) 1.00 1.039 mg/Kg 104 79-123 <br />LCS LCS <br />Surrogate Recovery Qualifier Limits <br />4-Bromofluorobenzene(Surr)103 70-131 <br />Lab Sample ID: LCSD 320-437997/5 Client Sample ID: Lab Control Sample Dup <br />Matrix: Solid Prep Type: Total/NA <br />Analysis Batch: 437997 <br />Spike LCSD LCSD Rec. RPD <br />Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br />GRO(C4-C12) 1.00 0.9444 mg/Kg 94 79-123 10 30 <br />LCSD LCSD <br />Surrogate Recovery Qualifier Limits <br />4-Bromofluorobenzene(Surr)103 70-131 <br />Eurofins TestAmerica, Sacramento <br />Page 24 of 40 12/10/2020