GCMS calibration verification results, May 2002

NYC 9/11 Public Portal Document Quantitation Report (VI Kevieweu/

Data File C:\MSDCHEM\1\DATA\0 5 0 902\CALS 0 . D Vial: 14 Acq On 10 May 2002 2:42 am Operator: Mclean Sample Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: EVENTS.E Quant Time: May 13 09:36:05 2002 Quant Results File: 050102.RES

Quant Method : C:\MSDCHEM\l\METHCDS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Last Update : Mon May 13 09:35:28 2002 Response via : Initial Calibration DataAcq Meth : 508SCAN

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

1) 1,4-Dichlorobenzene-d4 9.94 152 4931588 40.00 ug/L 0.00 10) Napthalene-d8 13.44 136 19948797 40.00 ug/L 0.00 17) Acenapthalene-dlO 18.57 164 10830311 40.00 ug/L 0.00 29) Phenanthranene-dlO 22.95 188 16001234 40.00 ug/L 0.00 37) Chrysene-dl2 30.82 240 10736706 40.00 ug/L 0.00 43) Perylene-dl2 34.70 264 6719380 40.00 ug/L 0.00

System Monitoring Compounds Q%% 27) TCMX 20.54 209 792692 9.80 ug/L / 0.00 Spiked Amount 40.000 Recovery = 24.50% 50) 2,4-ddd 0.00 235 0 0.00 ug/L ( Spiked Amount 5.000 Recovery 0.00%

Target Compounds 35 Qvalue 2) n-nitros-dimethyl amine 3.83 74 5305144 52.50 ug/L . 88 3) bis(2-Chloroethyl)ether 9.35 93 9675584 50.14 ug/L 89 4) 1,3-Dichlorobenzene 9.77 146 9389719 47.80 ug/L 100 5) 1,4-Dichlorobenzene 9.98 146 10116534 50.09 ug/L 99 6) 1,2-Dichlorobenzene 10.36 146 9038991 50.34 ug/1 99 7) 2,2'oxybis(1-Chloropropane 10.81 45 15346168m 51.60 ug/L 8) N-nitroso-di-propylamine 11.15 70 6927238 50.64 ug/L 96 9) Hexachloroethane 11.26 117 3855196 51.76 ug/L 94 11) Nitrobenzene 11.50 77 9878001 51.19 ug/L 93 12) Isophorone 12.21 82 17917485 51.54 ug/L 100 13) bis(2-Chloroethoxy) methan 12.95 93 11630989 50.50 ug/L 97 14) 1,2,4-Trichlorobenzene 13.31 180 7404732 50.66 ug/L 98 15) Napthalene 13.50 128 26610301 49.79 ug/L 98 16) Hexachlorobutadiene 13.93 225 3564102 52.05 ug/L 99 18) 2-Chloronaphthalene 16.94 162 13922159 50.40 ug/L 98 19) Dimethylphthalate 18.02 163 17638016 ,49.82 ug/L 99 20) 2,6-Dinitrotoluene 18.13 165 3025726 54.37 ug/L 91 21) Acenapthylene 18.14 152 23640206 46.28 ug/L 98 22) Acenapthalene 18.67 153 14656622 49.76 ug/L 98 23) 2,4-Dinitrotoluene 19.29 165 3933926 49.96 ug/L 96 24) Diethylphthalate 20.15 149 15799264 51.33 ug/L 98 25) 4-Chlorophenyl-phenylether 20.34 204 8294533 50.98 ug/L 99 26) Fluorene 20.21 166 17124230 50.83 ug/L 97 28) Azobenzene 20.79 77 20574613 50.65 ug/L # 94 30) Nnitrosodiphenylamine 20.70 169 10072255 51.29 ug/L 94 31) 4-Bromophenyl-phenylether 21.77 248 4145131 52.45 ug/L 98 32) Hexachlorobenzene 21.80 284 3894315 51.47 ug/L 100 33) Phenanthrene 23.03 178 23976280 49.67 ug/L 98

(#) = qualifier out of range (m) = manual integration CAL50.D 050102.M Mon May 13 11:55:19 2002 Page 1

NYC-WTC_000022991