Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I ATC ASSOCIATES INC. - TEM ANALYSIS :..?.E -_F:crP 4 - ,7 ,) at Samui- Nc. cCc1O r' ___mr T_ro yiC mm upera_:r C

'C lient_ Sp: No. 07 F_-___ Area 34: nm"

Instrument -.D. EM 10 CRN 3rls 1.- DISK Mc .

Screen Maanificar.ion 15 40X moo , Area __:-} a, _ Comments

Act Voltage 90 kV No. GC co be Analysed 4. _ Struct ODrsod _ - simm

I GO. No Coord. Structure Structure Type No. F B C M ,0.5 um < 5 Length sum Chrys. I.D. of Structure Amphibole EDS Nor,/ (Nonasb. Nonasb. Arnbig./ND Elements

If

!I i I

I I

[1

L Photo No. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra

1 containing samples) Struct. = > O.Sum & > 5:1 Aspect Ratio lGrin acceptance: structures up to 70a i?fim <50% undiosolved iTtir, overlapped or folded <10% particulate coverage >50% coverage N= Not Observed (EDS spectrum ar diffraction pattern) lot least 20 unfolded or overlapped grid squares I (lot

I 4)

F Totals Positive diffraction pattern properties conforming 1<5% holes or opaque areas B C M > 5um

1 to laboratory identification criteria observed. Unused portion For ebrysetilr. 0.79am spacing for (020) refleeuon.. of filter Chrysotile 0.59nm spacing for the Payer line repeat. Streaking y O tdee portion of (110) and (100) eafleeuon.. of tiller For amphtbeleS: O.SOnm layer lino repeat, and of filter vi de) O.S mUo of non -twinned layer line .pot Spacing to Amphibole layer line repeat distance (0.5Snm1• mauon

I LOS spectrum conforming to laboratory identitiaauon criteria observed. P= Single Fiber (1-3 intersections = 1-3 fibers) 9= Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>D intersections) apprss.Eestte

25mm filler / 12mm AMPHIBOLES Amosite Croeidolite Ambiguous!

von —asbestos, M Matrix Slapping Rule,: Anthophyllite

I =

NSD= No Structures Detected >10 ./C.O. or m let 4 G.O. Tremolite Actinolite Non —Identified I-•\DATA\PRIVATE\MIKEC\CADO\TEM2 9/22/99

NYC-WTC 000104386