GCMS surrogate recovery report, sample AE12283, June 2002

Machine-extracted title · confidence 100%

Report documenting the recovery percentage of the 2,4-DDD surrogate standard used to validate gas chromatography-mass spectrometry analysis.

NYC-WTC_000015696–000015724

Folder label: “GCMS X 6/7/02 A 6/10/02”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\0610022\12283.D Vial: 11 Acq On : 10 Jun 2002 7:10 pm Operator: Sample : gc/ms scan 6/7 Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params.: LSCINT.e

Quant Method : C:\MSDCHEM\l\METHQDS\060302.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 2 Methylene Chloride Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T.

3.72 5.21 ug/L 4144240 l,4-dichlorobenzene-d4 9.90

Hit# of 5 Tentative ID MW MolForm CAS# Q 1 Methylene Chloride 84 CH2C12 000075-09-2 91 2 Methylene Chloride 84 CH2C12 000075-09-2 91 3 Methylene Chloride 84 CH2C12 000075-09-2 91 4 Methylene Chloride 84 CH2C12 000075-09-2 90 Abundance Scan 109 (3.720 min): 12283.D (-94) (-) m/z 49.10 100? 49 84

5000

■ ■ ■ i • • ■ • i ■ ■ ■ ' i ■ • ■ ■ i ‘ ■ i 88 3.40 3.60 3.80 4.00

niz-> 01 5 ...10.......... .blife.......... 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 70 TIENugmnptt -rrfTTT m/z 84.00 78.28% Abundance #111040: Methylene Chloride 49 84

5000 ■ ■ ■ i ■ ■ ■ • i ■ ‘ ' i ■ ■ ■ ■ i ■ ■ ' ■ i 3.40 3.60 3.80 4.00 35 m/z 86.00 49.57% 88

mfe-> 01 14 2528 32 ,128311. +52TTTITTTETTTTTTTTt 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 -11 ■11111 ■ i ■ । ■ ■ ■ ■ । ■11 ■ i111 70 H Abundance #111039: Methylene Chloride 49 84 ‘ 3.40 ‘ ' 3.60 " 3.80 ‘ ' 4.00 ' ‘ 1 5000 m/z 51.05 30.68%

2831 3538 43 |i .52 57 88 67 71 77 . —TT 0 *119191120011—0——9—2031——81——m01——2———mm——7 TTHmmgmuTt miz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #12327: Methylene Chloride 49 3.40 3.60 3.80 4.00 m/z 47.10 17.90% 84 5000

14 18 24 2831 353841 88 2 70 110111100/151-1—1—02011-27-1 - 0 1■i■■‘' i ■1111" “ i111 ■ i11111111' 11'11111 “ i1 mz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.40 3.60 3.80 4.00

12283.D 060302.M Tue Jun 11 08:23:35 2002 Page 5

NYC-WTC_000015705

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NYC-WTC_000015705Source: NYC Law Department, mirrored locally

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