Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS I Lab Sample No 5_566 .-.-_-_ MCE _- mm Gperacor

iai_nt Soi No. 01 -F _aar Area ]d5 mn .~• Instrument =.D. EM 10 CR Gr:.d L.D -, •~~ Disk Sc. I Screen Magnification 15,400X (301 Area : .0.:.:4 mm'2 :omments

Acc. Voltage 80 kV Sc, GO tc be Ana:yced 6 4. 2 Stract :crsod. -/mm

GO. Structure Structure Type Length ! I.D. of Structure N or/ EDS (Nonasb. No Coord. No. F B C M 5uxa jChrysJ Amphibole Nonasb. IAmbig./ND Elements)

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Photo Na. (from 1 in 5 asbestos- Identify all structures u ng EDS Check diffraction for asbestos Store all unrepeated spectra -J containing samples) Grid acceptance: I structures up to 70a i~ffm (let 4) I <$OZ undissolved (lIter, overt.ppe or (aided Struct. _ > 0.5um & > 5:1 Aspect Ratio <l0% particulate coverage >50% coverage Totals N= Not Observed (EDS spectrum or diffraction pattern) lot least 20 unfolded or overlapped grid squares <5% holes or opaque areas M > 5um

I Pmitive dlffracuon pattern properties conforming F B C to laboratory Identification criteria portion Par ehrrrotilas 0.79nm ■nansng far (020) mneation., of filter Chrysotile 0.59nm Missing far the layer lino repest .ure.ku g idedportion o[ (110) and (190) reflection.. of fm sr or For amPhibale.: O.SDom f layer line ro of■L and aPPro.. (2mm td.) 9.S nua of son-tanned later line spot spacing to Amphibole

I layer line repeat distance (0.59nm). EDS spectrum conforming to laboratory Ambiguous identification criteria observed. PHIBOLES Single Fiber (1-9 intersections = 1-0 fibers) observed.Quea.ed Amosite B= Bundle (>3 fibers ci fiber diameter apart) Cluster (>3 Intersections) 25mm filter Crocidolite Non —asbestos'. M I , Slapping Ruler. Anthaphyllite a NSD= No Structures Detected 1 >50 ./a.o or m lot 4 0.0. j Tremolite Actinolite Non-Identified 1-\DATA\PRIYAMMlRSa\r.ADD\TEY9 a/22/98

NYC-WTC 000104380