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Page 33 of 48 <br /> ti e rof i ns Quality Control - Spike/Spike Duplicate <br /> Conestoga-Rovers &Associates Date Received: 05/30/15 <br /> 6520 Corporate Drive Work Order: 15-05-2299 <br /> Indianapolis, IN 46278-2915 Preparation: EPA 50300 <br /> Method: EPA 82606 <br /> Project: 085972-23A-5702 Page 8 of 8 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number <br /> 15-05.2014-1 Sample Solid GC/MS Q 05127115 05131/15 12:29 1505315003 <br /> 15-05-2014-1 Matrix Spike Solid GCIMS Q 05127115 05/31115 13:27 1505315003 <br /> 15.05-2014-1 Matrix Spike Duplicate Solid GC/MS Q 05127115 05/31115 13:53 1505315003 <br /> Parameter Sample S ike MS MS MSD MSD %Rec.CL RPD RPD CL Qualifiers <br /> Conc. Added Conc. 61R <br /> Benzene <br /> Canc. °!°Rec. <br /> Benzene ND 50.00 39.30 79 38.45 77 61-127 2 0-20 <br /> Carbon Tetrachloride ND 50.00 37.38 75 36.87 74 51-135 1 0-29 <br /> Chlorobenzene ND 50.00 39.69 79 37.66 75 57-123 5 0-20 <br /> 1,2-Dibromoethane ND 50.00 43.44 87 42.57 85 64-124 2 0-20 <br /> 1,2-Dichlorobenzene ND 50.00 40.35 81 37.35 75 35-131 8 0-25 <br /> 1,2-Dichloroethane ND 50.00 42.50 85 41.58 83 80-120 2 0-20 <br /> 1,1-Dichloroethene ND 50.00 34.24 68 33.08 66 47-143 3 0-25 <br /> Ethylbenzene ND 50.00 42.14 84 39.68 79 57-129 6 0.22 <br /> Toluene ND 50.00 41.39 83 39.76 80 63-123 4 0-20 <br /> Trichloroethene ND 50.00 41.90 84 41.70 83 44-158 0 0-20 <br /> Vinyl Chloride ND 50.00 40.40 81 37.77 76 49-139 7 0-47 <br /> p/m-Xylene ND 100.0 82.93 83 77.51 78 70-130 7 0-30 <br /> o-Xylene ND 50.00 40.00 80 37.72 75 70-130 6 0-30 <br /> Methyl-t-Butyl Ether(MTBE) ND 50.00 39.76 80 40.34 81 57-123 1 0-21 <br /> Tert-Butyl Alcohol(TBA) ND 250.0 238.0 95 240.2 96 30-168 1 0-34 <br /> Diisopropyl Ether(DIPE) ND 50.00 41.95 84 41.12 82 57-129 2 0-20 <br /> Ethyl-t-Butyl Ether(ETRE) ND 50.00 42.31 85 41.99 84 55-127 1 0-20 <br /> Tert-Amyl-Methyl Ether(TAME) ND 50.00 42.04 84 41 74 83 58-124 1 0-20 <br /> Ethanol ND 500.0 497.5 100 470.2 94 17-167 6 0-47 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 - TEL:(714)895-5494 • FAX:(714)894-7501 <br />