Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS LAS 0RCtJS # _ -

Lab Sample No. 62516 Filter ':'ype MC_ _= mm Onerattr

Client Spl. No. 10 Filter Area 38S mm 2 - Instrument I.D. EM 10 CRY Grid 0.0. ________________ ~ ~ C' Disk No.

Screen Magnification 16.4008 (GO) Area 7.01124 mm' Comments

Arc. Voltage 80 kV No. GO to be Analyzed 4.72' Struc- _orsod. t_ 7S s mm'=

EDS GO. Structure Structure Type Length I.D. of Structure N or,/ (Nonasb. No Coord. No. um F D C M 5 „ >0.5 > 5um IChrys.l Amphibole Nonasb. iAmbig./ND Elements

z --e- i d.--

I ~ Photo No. (from 1 in 5 asbestos- Identify all structures uein EDS Check diffraction for asbestos Store all unrepeated spectra containing samples) Grid acceptance: structures u to 70a iltm (tat 4) <50% undiasolve t or. over appe or o e StrucL = > O.Sum k > 5:1 Aspect Ratio <10% particulate coverage >50% coverage Totals N= Not Observed (EDS spectrum or diffraction pattern) let least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5% holes or opaque areas l H to laboratory identification criteria Unused portion Far chryrowal 0.70nm spacing for (020) reflections. at filler Chryso tile O.Sam spacutg for the layer line repeat. streaking Avoided portion of (110) and (100) refleoUooa. of filter Far amplubaies: 9.3Snm layer line repeat. and spares. • loot (2mm ode) Amphibole 3.2 ratio of non-twinned layer floe .pot spacing to layer line repeat distance (O.SOnm). EDS spectrum conforming to laboratory PHIHCLES Ambiguous Identification criteria observed. F- Single Fiber (1-D intersections a 1-5 fibers) ite observed.a17Arnos22mm [liter B= Bundle (>3 fibers <1 fiber diameter apart) Crocidolite Non — asbestos duster (>3 intersections) N- r~ Stopping Solos: -- >SO ./G. O. or m 1st 4 u.0. Anthophyllite I NSD= Na Structures Detected 1 Tremoltie ACtinalite 1 Non -Identified L• \DATA\PRIVATE\XtKEG\CADD\T2M3 9/22/98

NYC-WTC 000104277