Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I ATC ASSOCIATES INC. - TEM ANALYSIS _ LAB GROUP 4. 5-71 - • Lan Sampi' Mc. 625'0 Filter Type ME 2 :nm Opera_

C1rec Spi. No 05 Filter Area 385 m instrument I.0 EM 10 CRX Grid _.C. " ] -~ Cisk Nc Screen Magnification 16,400. (GO; Area 0.0_324 TM-2 Comments

Arc. Voltage 80 kV No GO co be Analyzed 5 4 :: Strlc: r;od. :_ s'T.

GO. StructurelStructure Type Length I.D. of Structure EDS N or/ 3o.s um I (N El meatb No Coord. No. F B C M > 5um IChr ys.,~ Amphibole ~ Nonasb. IAmbig./NDI Elements) < 5um p

I I

I Phole No. (from 1 in 5 asbestos- Identify all atructurea usin EDS Check diffraction for asbestos Store all unrepeated spectra - containing samples) Grid acceptance: structures u Lo 703 t'ltm (let 4) Struct. = 0.5um & > 5:1 Aspect Ratio <50% undiaaolve 1 er, over apps or o e <10% particulate coverage >50% coverage Totals N= Not Observed (EDS spectrum or diffraction pattern) lat. least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5x holes or opaque areas to laboratory Identification criteria observed. Unused person For ehryeatile: 0.79nm ■acing for (020) reflections. of filter Chrysotile 0.09am spacing for the Payer line repeat tLrealnag y of (110) and (190) ranecuona, Armded portion of filter Par amphlbniee: 0.09nm Iyer itne repeal and approa. ( Portion of niter (2mm .:del 9,0 ratio of non-twinned layer line spat spacing to auelect Amphibole layer floe repast distance (0.09nm). , e:ammaUon EDS spectrum conforming to laboratory Ambi g tr olls Identification criteria observed. i AMPHIBOLES F= Single Fiber (1-3 intersections = 1-3 (ibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) 20mm filter Crocidolite Non —asbestos >9 Intereeetlens) Stepping Rata : atrix M= Cluat.ar Anthophyliite NSD= Na Structure■ Detected >00 ./ll.o. or in lit 4 G.O. Tremolite I Actinolite I Non —Identified L•\DATA\PBIVATE\MIKEC\CA00\TEM9 9/22/08

NYC-WTC 000104384