Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I ATC ASSOCIATES INC. - TEM ANALYSIS 1 Lac Sample No Client Sp1. No. 28 E2E32 LAS GROUP #: 0 71 - -0!25'0' Fii:e_ lope MCE 20 mm F.__er Area 330 mm Opera_:r - 1~

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1 Instrument : .D. EM 1D CRC Grid I.D. Disk Nc. Screen Magnification 15,400:: (GO) Area 0.01124 mm"2 Comments Acc. Voltage 80 kV No. GO no be Analyzed 5 4.721 Strut Carscd. _c 70 'rim

1 GO. No Coord. Structure structure Type No. F B C M >0.5 um < 5 um Length >. 5um Chrys. I.D. of Structure Amphibole N or,/EDS (Nonasb. Nonasb. Ambig./ND Elements)

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Photo No. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra containing samples) rid acceptance: structures u to 70e 141m (lot 4) Struct. = > D.Sutn & > 5:1 Aspect Ratio 50% undiceolve t er, over apps or at a 0%particulate coverage >50% coverage TO to S <,, least 20 unfolded or overlapped grid squares N- Not Observed (EDS spectrum or dltfracUon pattern) r. <5% holes or opaque areas Positive diffraction pattern properties conforming to laboratory Identification criteria observed. Unused portion For chryaoLilt. 0.73nm spaoing for (020) reflections, of tiller Chrysotile 2.53nm spacing for the layer line repeat, streaking Avoided portion of (110) and (130) reflections. of filter For amphiboleE 0.53nm layer line repeat. and approa, Portion of Oiler (2mm vide) 3.3 ratio ai nee-tsr(nned layer IIna spot spacing w I subject a Amphibole layer It.. repeat dletanca (0.23nm). m a

EDS spectrum conforming to laboratory Ambiguous Identification criteria observed. AMPHIBOLES P= Single Fiber (1-7 Intersections = 1-3 fibers) Amosite B= Bundle (>5 Cabers <1 fiber diameter apart) r (>D tntersactiona) 25mm Oiler Crocidolite Non —asbestos Sopping Rules: L~ Anthophyllite M= att = NSD= No Structures Detected >30 s / 0.0. or In tat 4 C.U. Tremolite Actinolite I Non —Identified L•\DATA\PRlVATE\MIkEO\CADD\TEMD Matrix 9/22/9a

NYC-WTC 000104406