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← Document results/DEP Box 36/105 DUANE ST 1001650, 151/1
Document / 231 pages

Ambient air sampling report Book Two for 105 Duane Street,

Machine-extracted title · confidence 98%

Second volume of ambient air sampling and visual observation results for 105 Duane Street after the WTC collapse.

NYC-WTC_000104321–000104551

Folder label: “105 DUANE ST 1001650, 151/1

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Scanned page image, NYC-WTC_000104398
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NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS LAE GROUP #: 57 7j - la/25/02

Filter Type MCP _5 mm ( Lab Sample No. 62584 operator '

Client Spl. Nc 0 Filter Area 385 mm'2

Instrument I.D EM 10 CRX Grid I.D. 4' S0'•c Disk Nc.

' Screen Magnification 16,400X IGO'! Area 0.01114 mm":. Comments

Acc. Voltage 90 ky No. GC to be Analyzed o 4.'2: Struc: Corsod. c_ s mm^ _

n GO. Structure structure Type Length I.D. of Structure N or ,t/ EDS L: No Coord. No. F B C M >0.5 um Sum Chrys. Amphibole Nonasb. Ambig./ND, (Nonasb. Elements)

I I I I I I I I I `Photo No. (from I in 5 asbestos- Identify all structures usin EDS Check diffraction for asbestos Store all unrepeated spectra

I containing samples) SLrucL = > 0.5um & > 5:1 Aspect Ratio Grid acceptance: <50% undissolve structures up to 703 trim (let 4) i er, overappe or wince <10% particulate coverage >50% coverage Mn Nat Observed (EDS spectrum or diffraction pattern) let least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5% holes or o a ue areas Totals to laboratory Identification criteria observed. Uaa■ed portion For chry■atilei 0.l0nm spa In for (090) reflections. of filter Chr Sotlle 0.39nm spacing for the layer Ilne repeat, streaking Avoided portion 'Y of (110) and (130) reflections, of filler For amphlboieai 0.50nm layer line repeat, and approa. Portion of filter (2mm side) 0.5 redo of non-twinned layer line spot spacing to subject to ...min.Uee Amphibole layer line repeat distance (0.30nm1• EDS spectrum conforming to laboratory Identification criteria observed. I AMPHIBOLES Ambiguous

P- Single Fiber (1-3 Intersections = 1-3 (ihere) Amosite H= Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 intersections) 25mm filter Crocidolite Non —asbestos —: Stopping Rules: Anthophyllite , ' M= Matrix NSD= No Structures Detected >50 sjG.O. or in let 4 G.O. I Trem°lite Actinolite i son -Identified L•\DATA\PRIVATE\MIKEG\CADD\TEX2 9/22/08

NYC-WTC 000104398

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NYC-WTC_000104398Source: NYC Law Department, mirrored locally

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