Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I ATC ASSOCIATES INC. TEM ANALYSIS I Lab Sample No. 6ZF i .1:te_ Type MCE 25 mm =pe rat

Client Sol No 08 F.-ter Area 185 mm'

Instrument I.D. EM 10 CRE Gr:d I.D ~~ 1 Disk Mc

Screen Magnification 15,400. (GO) Area 0.0:.24 mm Comments I 80 k'i No. GO to be Analyzed 4 - 2 St -- od mm m,m.' - Acc Voltage

I GO. No Coord.l Structure Structure Type, No F B C M < 5um %0,5 um Length >. 5um I.D. of Structure EDS (Nonasb. N or vz

jChrys.; Amphibole I Nonasb. iAmbig./NDI Elements)i

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I I I I I I Photo No. (from I in 5 asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra J containing samples) Grid acceptance: structures up to 70a t'fim (lot 4) <50% undissolved filter, overlapped or of e I Struct. = ) 0.5um & > 5:1 Aspect Ratio <10% particulate coverage >50% coverage Totals N= Not Observed (Ens spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <5% holes or o acue areas I F B C M > 5um ✓ toPositive diffraction pattern properties conforming laboratory identification criteria observed. Unused portion For chrr otile: 0.73nm s actng for (020) reflections. of filter Chrysotile 0.33nm posing for the Pdyer line repeat. streaking I of (110) and (130) reflection.. For anophibo as: O.33nm layer line repeal. and approx. l Portion of filter` '~ Avoided portion of filter Mmm wide) j 0.3 ratio of non-twinned layer line spat spacing to sUbl.ct a Amphibole e.ammation

I layer line repeat di.unee (0.53nee). y i

v'= EDS spectrum conforming to laboratory Ambiguous identification criteria observed. ~ • AMPHIBOLES F= Single Fiber (1-3 Intersection. = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fi ber diameter apart) 25mm filter / Crocidolite j Non —asbestos j Ce Cluster (>3 Intersections) Stopping boles: Anthophyllite N= Matris NSO= No Structures Detected >50 s/C.O. or in let 4 C.O. TremIlolite Actinolite Non-Identified I L•\DATA\PRIVATE\MIKEG\GDOVEM3 9/22/98

NYC-WTC 000104387