GC/MS blank analysis results for nitrosamines, sample AE10895, May 20

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Laboratory report showing non-detectable levels of nitrosamines and other contaminants in blank sample AE10895.

NYC-WTC_000024041–000024057

Folder label: “GCMS X 5/10/02 A 5/16/02”

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NYC 9/11 Public Portal Document C- X —UpulIt I\CDC

Data File : C: \MSDCHEM\ 1 \DATA\ 051602\510LB.D Vial: 3 Acq On : 16 May 2002 4:10 pm Operator: Mclean Sample : 5/10 eh Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L

Peak Number 7 3,5-Dibromo-4-hydroxybenzoi... Concentration Rank 5

R.T. EstConc Area Relative to ISTD R.T. 33.14 1.16 ug/L 635784 Perylene-d12 34.70 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 3,5-Dibromo-4-hydroxybenzoic acid 294 C7H4Br203 003337-62-0/10 2 1-[1-(2-Fluorenyl)ethylidene]sem... 265 C16H15N3O 1000225-17/6 10 3 l-Methyl-2-methylthio-4,4-diphen... 296 C17H16N2OS1 1000148-67-6 10 4 3-Hydroxy-4-methoxyphenylpropion... 296 C15H2404Si 1000071-70-5 9 Abundance Scan 5116 (33.139 min): 510LB.D (-5115) (-) m/z 296.00 160.00% 209 29/6 279 369 96 133 191

5000 49 ■ ■ i ■ 1 • ■ । ■ i ' ■ 1 ■ i ' ■ ■ ■ i 341 32.80 33.00 33.20 33.40 149 | 0 ">> 11111111111 *1 i " '11 " " i' " i' ‘ ' i "' ‘ r 1' I ‘11' 11'1' 1'11' 111 i1 " ' i ‘1 " i' ■'' i ■1 " i m/z 208.90 88.15% ^z-> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 Abundance #99039: 3,5-Dibromo-4-hydroxybenzoic acid 296 HN 279 5000 62 JLW 32.80 33.00 33.20 33.40 1’I

45 m/z 221.10 81.48%

mfe-> 0 3 90 119 141 170 199 223 251 ’ [enr""r"ti । .1 'i r i rhr r . M r । i T > . r | "r irathapunn) 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 I ‘" r ■ " i " " i " " i

Abundance #1384:1-[1-(2-Fluorenyl)ethylidene]semicarbazide 39 165 ' 1 1 * J 1 ‘ 1 ‘ 1 1 ‘ I ' 1 ■ ' i ' ■ ■ ■ i 32.80 33.00 33.20 33.40 5000 221 m/z 279.00 76.67% 191 265 63 81 115 139 01TT mJ 248 ■ " i■ 1 ■■i'■. ■ । . 1111111 > । .1111,111

miz-> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 Abundance #99019:1 -Methyl-2-methylthio-4,4-diphenyl-5-oxo-2-imidazolin 221 296 32.80 33.00 33.20 33.40 m/z 369.10 72.22% 77 5000 165 118

0 51 .I. I. „ l.. I,,A ■ ■ ■ । ■ ■" ।।" “ • i" " i 239. 27 i'1" i ‘1" i" " i" I m/z—> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 32.80 33.00 33.20 33.40

510LB.D 050102.M Fri May 17 15:08:54 2002 Page 10

NYC-WTC_000024054

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NYC-WTC_000024054Source: NYC Law Department, mirrored locally

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GCMS blank analysis results for May 2002 · Box DEP Box 18

NYC-WTC_000022965

Laboratory report of a GCMS blank run conducted on May 14, 2002, showing non-detect results for various compounds.

1 shared topics · Same agency, volume and box · similarity 0.994