Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

P1 ATC ASSOCIATES INC. - TEM ANALYSIS LAB GROUP d 5'0? - 3/ 4/0L / r Lao Sample No. 52545 Filter ..pe MCE 35 mm Cnerst~: `- L'-?~ Client Spl. No 39 Fisher Area 340 min'2 /_ Instrument I.D EM 10 CRY. Grid I.D. DISK No Screen Magnification 15,400: {001 Area 3.01 1 mrn'3 Crmments Arc. Voltage 80 kV No. GC to be Analysed 5 4 ' S`r'c_. _oracc. 7 s'mm"=

GO. Structure Structure Type Length I I.D. of Structure EDS N or s/ ! >,U.S um (Nonasb. No Coord. No. F H C M >. 5urn Chrysd Amphibole Nonasb. Ambig./NDI Elements) < 5um rr2 2-

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Photo No. (from 1 in 5 asbestos- Identify all structures usin EDS Check diffraction for asbestos Store all unrepeated spectra containing samples) iGrid acceptance: structures u to 70s t?ftm (1st 4) I Strict = > 0.5um & > 5:1 Aspect Ratio <50z undiesolve t er, overlapped or folded <10% particulate coverage >50% coverage Totals N= Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <5% holes or o a ue areas Positive diffraction pattern properties conforming F B C M - 5um to laboratory Identification criteria observed. Unused portion For chrysoille: 0.73nm spacing for (020) reflections, of (liter 0.53em spacing for the layer line repeat, streaking Chrysotile Avoided portion of (110) and (190) reflections. of filter For amphiboles: 0.53nm layer line repeat, and apprea. Pvrtlon of (liter (2mm side) 2.5 ratic of non-t>rtnnetl layer Itne spot spacing m esamQna in Amphibole layer line repeat distance (0.59am). EDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous F= Single Fiber (1-3 intersections = 1-3 fibers) Amosite 8= Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 intersections) 25mm inter Crocidolite Non —asbestos! M= Matrix Stopping Bukas: Anthophyllite NSD= No structure. Detected >50 ./c.o. or in at. 4 G.o. I Tremalite Actinolite Non —Identified ~' L•\0ATA\PlUVATE\XIKEG\CADD\1'ZM3 9/22/98

NYC-WTC 000104306