GCMS surrogate recovery data for sample AE07638, April 2002

NYC 9/11 Public Portal Document Quantitation Report (QT Reviewed)

Data File : C:\MSDCHEM\l\DATA\020410\07638.D Vial: 10 Acq On : 10 Apr 2002 6:51 pm Operator: Nefliu Sample : field blk Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: EVENTS.E Quant Time: Apr 11 15:57:02 2002 Quant Results File: SCANAPR0902.R

Quant Method : C:\MSDCHEM\1...\SCANAPR0902.M (Chemstation Integrator) Title : Method 508 GC/MS Scan Last Update : Thu Apr 11 15:44:30 2002 Response via : Initial Calibration DataAcq Meth : 508SCAN1

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

1) 1,4-Dichlorobenzene-d4 10.66 152 2313734 20.00 ug/1 -0.01 10) Naphthalene-d8 15.77 136 8718563 20.00 ug/1 -0.02 17) Acenaphthene-diO 23.66 164 4781722 20.00 ug/1 -0.01 31) Phenanthrene-diO 30.89 188 7601425 20.00 ug/1 -0.01 39) Chrysene-dl2 39.09 240 5473942 20.00 ug/1 -0.02 45) Perylene-dl2 42.30 264 2581516 20.00 ug/1 0.00

System Monitoring Compounds 28) TCMX 26.73 207 165558 2.89 ug/1 0.17 Spiked Amount 4.000 Recovery = 72.25% 38) 2,4-DDD 0.00 235 0 0.00 ug/ml Spiked Amount 5.000 Recovery = 0.00%

Target Compounds Qvalue

(#) = qualifier out of range (m) = manual integration (+) = signals summed 07638.D SCANAPR0902 ,M Thu Apr 11 15:57:56 2002 Page 1

NYC-WTC_000040262