GCMS surrogate recovery report, sample AE12763, June 2002

NYC 9/11 Public Portal Document quantitaclon keport (VT Reviewed) Data File : C:\MSDCHEM\l\DATA\061102\12763.D Vial: 7 Acq On : 11 Jun 2002 2:46 pm Operator: Sample : re-ext. Inst :: Instrumen Mise Multiplr: 1.00 MS Integration Params: EVENTS.E Quant Time: Jun 11 15:43:53 2002 Quant Results Filet-060302 .RES Quant Method : C:\MSDCHEM\1\METHODS\060302.M (Chemstatio: C ator) Title : 508 Modified GC/MS scan Last Update : Tue Jun 11 15:43:45 2002 Response via : Initial Calibration DataAcq Meth : 508SCAN

Internal Standards R.T. Qlon Response Cone Units Dev(Min) 1) 1,4-dichlorobenzene-d4 9.90 152 5493257 40.00 ug/L 0.00 10) Napthalene-d8 13.39 136 21694017 40.00 ug/L 0.00 17) Acenapthalene-dlO 18.53 164 11934219 40.00 ug/L 0.00 29) Phenanthranene-dlO 22.91 188 18081668 40.00 ug/L 0.00 37) Chrysene-d12 30.76 240 11475555 40.00 ug/L 0.00 43) Perylene-dl2 34.65 264 6189398 40.00 ug/L 0.00 System Monitoring Compounds 27) TCMX 20.50 209 2264919 31.56 ug/L 0.00 Spiked Amount 40.000 Recovery 78.90%

Target Compounds Qvalue 2) n-nitros-dimethyl amine 0.00 74 0 N.D. d 3) bis(2-Chloroethyl)ether 0.00 93 0 N.D. 4) 1,3-Dichlorobenzene 0.00 146 0 N.D. 5) 1,4-Dichlorobenzene 0.00 146 0 N.D. 6) 1,2-Dichlorobenzene 0.00 146 0 N.D. 7) 2,2'oxybis(1-Chloropropane 0.00 45 0 N.D. 8) N-nitroso-di-propylamine 0.00 70 0 N.D. 9) Hexachloroethane 0.00 117 0 N.D. 11) Nitrobenzene 0.00 77 0 N.D. 12) 1sophorone 0.00 82 0 N.D. 13) bis(2-Chloroethoxy) methan 0.00 93 0 N.D. 14) 1,2,4-Trichlorobenzene 0.00 180 0 N.D. 15) Napthalene 0.00 128 0 N.D. 16) Hexachiorobutadi ene 0.00 225 0 N.D. 18) 2-Chloronaphthalene 0.00 162 0 N.D. 19) Dimethylphthalate 0.00 163 0 N.D. 20) 2,6-Dinitrotoluene 0.00 165 0 N.D. 21) Acenapthylene 0.00 152 0 N.D. 22) Acenapthalene 0.00 153 0 N.D. 23) 2,4-Dinitrotoluene 0.00 165 0 N.D. 24) Diethylphthalate 20.10 149 17942 N.D. 25) 4-Chlorophenyl-phenylether 0.00 204 0 N.D. 2 6) Fluorene 0.00 166 0 N.D. 28) Azobenzene 20.50 77 39424 N.D. 30) Nnitrosodiphenylamine 20.50 169 43964 N.D. 31) 4-Bromophenyl-phenylether 0.00 248 0 N.D. 32) Hexachlorobenzene 0.00 284 0 N.D. 3 3) Phenanthrene 0.00 178 0 N.D. 34) Anthracene 0.00 178 0 N.D. 35) Di-n-butylphthalate 25.04 149 29174 Below Cal # 79

(#) = qualifier out of range (m) = manual integration 12763.D 060302.M Tue Jun 11 15:46:21 2002 Page 1

NYC-WTC_000015806