Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS 2 20 , LAB 3ROUF x ❑ -7 1

Lab Sample No 02571 -' T.c MCA •no Oder aCL_

Client Spl. No. 00 Fl:_r Area

Instrument I.D. EM i CRX Grid I.D :\ ) DISK No.

Screen Magnification 16,470X (GO) Area 2.7:_24 ms."2 Comments

Voltage 80 kV No. GO to be Anal;zed 4.72 . Struct. Cr-td = '-i g inn: Act

L GO. No Coord. Structure Structure Type No. F B C :H <05 m Length g >, 5um ! !Chrys.! Amphibole I.D. of Structure N EDS or,/ (Nonasb. Nonasb. IAmbig./ND Elements

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I -Photo No. (from 1 in 5 asbestos- containing samples) S tract. _ N= Not 0.5um & > 5:1 Aspect Ratio Observed (EDS spectrum or Identify all structures usm EDS

diffraction Positive diffraction pattern properties conforming to laboratory Identification criteria observed. pattern) IGrad acceptance: <50% undissolve <10% particulate coverage >50% coverage lot least 20 unfolded Check diffraction for asbestos structures u to 70s iiim (let 4) i er. overlapped or (aided

or overlapped grid squares 1<5% holes or o a ue areas Unused portion F Store all unrepeated spectra)

B Totals C 't M _j_ 5um

Far ahry.etile: O.70cm spacing for (020) reflections. at filter Chrysotile I 0.59nm apamng for the layer line repeat, streaking of (110) and (130) reflection°. Aseided portion f filter For ampblboles: 0,59nm layer line repeat, and approx. Portion of ❑itar .ublect to (amm side) Amphibole 3.5 ratio of non-t,fnned layer tics .pot spacing to esaminaLLon 1 layer line repeat distance (0.50nm). EDS spectrum conforming to laboratory ~jr-- - ^, Ambiguous I identification criteria observed. F= Single Fiber (1-9 intersections = 1-3 fibers) AMPHIBOLES Amosite B= Bundle (>0 fiber, <1 fiber diameter apart) 20mm fitter Croeidolite Non —asbestos Co Cluster (>9 intersections) Slapping Rule■: ''~ Anthophyllite --~--~ to Matrix >50 0/0.O. or in Lot 4 G.O. Tremolite NSDe Na Structures Detected Non —Identified I L\DATA\PR1VATE\A)XEG\CADD\TEM9 9/22/98 Actinolite

NYC-WTC 000104385