Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS 1 Lac Samc_e Nc. Client Sc,!. No. 02S74 :.AB 3 ~• T. P d S' _ T•;L__

F_.__r Area .a5 nm C_ __ nm L Wi t_

Instrument I .D. EM 10 CR;: Grid :.D " 2tskc Nc Screen Magnification 15,400X IGO Area ) . 'J1124 mm": Comment-- Acc. Voltage 90 kV No. GO to cc Analviced 4721 Glruoc. ^_orsrd. cc 70 s-mm'

GO. Structure Structure Type Length I.D. of Structure EDS IN or,/ j ,0.5 um (Nonasb. I No Coord. No. F B ! C IM < 5um Chrvs.i Amphibole Nonasb. iAmbig./ND! Elements

.~ — v

u —___—

—-— ___±__________

I

I I I I i t

ii ___ I1 1 ___ _____ ____ ___ ___ ___

I

`Photo No. (from I in 5 asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra — containing samples) IGrid acceptance: structures up to 70s/cftm (1st 4) undissolved filter, overlapped or folded I SLrucL = 0.5um & > 5:1 Aspect Ratio <10% particulate coverage >50% coverage j<5U'4 I Totals Na 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 I F' B C M -i 5um to laboratory identification criteria observed. Unused peruse For cleryaoUle: 0.73am ■ mana for (020) reflections, of filter Chr y sotile i 0.50nm ,pacing for the Payer life repast, ■treakutg ' —Avoided portion 1 of (110) and (100) reflections. o filter Per amphibole.. 0.33nm layer line repeat. and appras. Portion of filter (2mm wide 3.S nun of non-twinned layer line spot spacing to a ublect to :ammstien ) Amphibole layer line repast distance (0A0nm).

ens spectrum conforming to laboratory identincation criteria observed. / AMPHIBOLES Ambiguous F= Single Fiber (1-3 tntersectfons = 1-3 fibers) Afnaslte 8= Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 intersections) 25mm filter Crocidolite Non —asbestos) M= Matrix r—~ stn Stopping in Rules: Anthoohyllite Ns0= Na Structure. Detected >50 s/C.O. ar m let 4 G.O. ! Tremolite j Non —Identified Actinolite I U\DATA\PR1VATE\M1EEG\CADO\TEM3 0/22/98

NYC-WTC 000104388