VOC analysis results, sample AE09097, April 24, 2002

NYC 9/11 Public Portal Document

Data File : C:\MSDchem\l\5973N\02apr24\0424B2.D Vial: 2 Acq On : 24 Apr 2002 9:59 am Operator: Sample : lb Inst : Instrumen Mise : April 19, 2002 Multiplr: 1.00 MS Integration Params: Lscint.p Quant Time: Apr 24 10:41:01 2002 Quant Results File: W042302.RES

Quant Method : C:\MSDCHEM\1...\W042302 .M (RTE Integrator) Title : VOC method 8260 Last Update : Tue Apr 23 11:06:33 2002 Response via : Initial Calibration DataAcq Meth : W042302

Internal Standards R.T. Qlon Response Cone Units Dev(Min)

1) 1,4-Difluorobenzene 17.69 114 898292 5.00 ug/L 0.00 27) Chlorobenzene-d5 25.46 117 794019 5.00 ug/L 0.00 51) 1,4-Dichlorobenzene-d4 31.54 150 585013 5.00 ug/L 0.00

System Monitoring Compounds 2) 1,2-Dichloroethane-d4 16.77 65 159514 4.88 ug/L 0.00 Spiked Amount 5.000 Recovery = 97.60% 17) Toluene-d8 21.61 98 1151442 4.77 ug/L 0.00 Spiked Amount 5.000 Recovery = 95.40% 54) 4-Bromofluorobenzene 28.50 95 354237 5.31 ug/L 0.00 Spiked Amount 5.000 Recovery = 106.20%

Target Compounds Qvalue 4) Chloromethane 5.92 50 4655 0.12 ug/L 84 8) Trichlorofluoromethane 8.11 101 4078 0.08 ug/L 99 11) Acetone 9.34 43 511 0.21 ug/L 89 21) Chloroform 14.93 83 32926 0.72 ug/L 97 36) Toluene 21.82 91 10457 0.07 ug/L 99 47) P & M-Xylene 25.82 91 10984 0.08 ug/L 97 56) n-Propylbenzene 28.85 91 10334 0.06 ug/L 81 60) 4-Chlorotoluene 29.47 91 5169 0.05 ug/L 93 63) sec-Butylbenzene 30.68 105 10668 0.06 ug/L 92 65) 1,3-Dichlorobenzene 31.37 146 3418 0.06 ug/L \ 95 66) 1,4-Dichlorobenzene 31.37 146 3418 0.06 ug/L 95 67) n-Butylbenzene 32.05 91 9694 0.07 ug/L 97 71) 1,2,4-Trichlorobenzene 37.41 180 2889 0.10 ug/L 73 72) Hexachlorobutadiene 37.84 225 3065 0.15 ug/L 76

(#) = qualifier out of range (m) = manual integration 0424B2.D W042302.M Wed Apr 24 10:41:02 2002 Page 1

‘NYC-WTC*_OOOO82224