Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

r ATC ASSOCIATES INC. TEM ANALYSIS SIS LAE CRC JP S.. _'i.: - _ 'Z0'0' I Lab Sample Mc. 62549 F.10._r Tyre M:CE _c mu'

Client Spl. No 43 Flits Area 29S nu' 2 r r :ns:rumert '.D EM 10 ^_R3: Grad :.D. D:sr: No

Screen Magnification 1€,400X (GC I Area 0. -•'-k mm'_ CCmment3

Acc. Voltage 80 kV Nc. GO to be Anaivzed 5 4 - sod

EDS GO. Structure Structure Type Length I.D. of Structure N or/ (Nonasb. No Coord. No. F B C IM >0.5 um < 5 um 3 5um IChrys.1 Amphibole Nonasb. IAmbig./ND Elements)

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Photo No. (from I in 5 allbestoo- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra_- containing samples) 'Grid acceptance: atructurea up to 70a iim (let 4) I Struct. = ) 0.5um & > 5:1 Aspect Ratio <50% undiceolved filter. overlapped or tolded <lox particulate coverage >50% coverage I Totals N= Not Observed (EDS spectrum or diffraction pattern) let least 20 unfolded or overlapped grid squares <5% holes or opaque areas I F B C M 1, 5um Positive diffraction pattern properties conforming to laboratory Identification criteria observed. Unused portion For ehrysoUle 0.77nm spacing for (0201 reflection, 0.53m epaetug for the layer line repeat. .traaking of (110) and (1301 re0eetiona. For amphibole.: 0.09nm layer line repeat, and aPPme. 3.5 ratio of non-twinned layer line ■pot spacing 10 Portion of (liter .ub)eet m esammaUon of filter Avoided portion of liar (2mm ndel Chrysotile

Amphibole -- layer line repeat distance (O.03nm). A EDS spectrum conforming to laboratory identification criteria observed. F= Single Fiber (1-3 Intersections = 1-3 fibers) AMPHIBOLES Anlosite Ambiguous -- H- - B= Bundle ((>3 fibers <1 rlber diameter apart) 25mm filter Crocidolite Non —asbestos) I j C = Cluster (>9 Interaectione) Stopping dwa■: L^ Anthophyllite M= Matrix

I NSD= No Structure. Deteered 1:\DATA\pR1vATE\MlKEC\CAD0VEM3 li >y0 a/C.a. or In 1st 4 C.D.

9/22/98 Tremolite Actinolite _________________ Yon —Identified -- NYC-WTC 000104308