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w w � � ww w w w ■■� ■� s <br /> Calibration V�icatlon <br /> EPA Method 8 B <br /> Client ATC Associates, Inc Matrix water <br /> Project EZ Serve#100966 Units ug/L <br /> 1 EPA 8260 <br /> Sample Name Daily Calibration Verification (-20 to +20%) <br /> Compound Amount Found Percent Diff Pass <br /> Tetrachloroethene 46 -8 yes <br /> Dibromochloromethane 40 -21 no <br /> Chlorobenzene 47 -6 yes <br /> Ethylbenzene CCC 48 -3 yes yes <br /> 1,1,1,2-Tetrachloroethane 44 -13 yes <br /> m,p-Xylene 96 -5 yes <br /> o-Xylene 46 -9 yes <br /> Styrene 47 -6 yes <br /> Bromoform 37 -25 no <br /> Isopropylbenzene 62 23 no <br /> 1,1,2,2-Tetrachloroethane 40 -20 no <br /> 1,2,3-Trichloropropane 43 -13 yes <br /> n-propylbenzene 61 21 no <br /> Bromobenzene 55 10 yes <br /> 1,3,5-Tnmethylbenzene 63 27 no <br /> 2-Chlorotoluene 58 15 yes <br /> 4-Chlorotoluene 59 19 yes <br /> tert-Butylbenzene 60 21 no <br /> 1,2,4-Tnmethylbenzene 55 11 yes <br /> sec-Butylbenzene 57 13 yes <br /> p-Isopropyltoluene 58 16 yes <br /> 1,3-Dichlorobenzene 52 4 yes <br /> 1,4-Dichlorobenzene 51 1 yes <br /> n-Butylbenzene 57 13 yes <br /> 1,2-Dichlorobenzene 49 -2 yes <br /> 1,2-Dibromo-3-chloropropane 36 -29 no <br /> 1,2,4-Trichlorobenzene 42 -15 yes <br /> Hexachlorobutadiene 46 -7 yes <br /> Naphthalene 27 -46 no <br /> 1,2,3-Tnchlorobe nzene 19 -63 no <br /> Surrogates Spiked QC Limits(% Rec SUMMATION <br /> DBFM 50 ng 75-125 91 CCC compounds pass the 8260B criteria <br /> 1,2-DCA-d4 50 ng 62-139 86 <br /> Toluene - d8 50 ng 75-125 99 <br /> 1,4-BFB 50 ng 75-125 95 CALIBRATION VERIFIED <br /> ATCO20102-31 <br /> Page 9 of 12 <br />