Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS I LAB GROUP k: 5762 - 10/25/01 Operator 62230 Filter Type NICE 25 mm Lab Sample No. C I Client Spl. No. 16 Instrument I.D. EM 10 CRX Filter Area 3

Grid I .D.

(GO) Area J

0.01124 mm"2 Disk No. Comments Screen Magnification 16.400X 4.721 Struct. Corsod to 70 simm' 6

I Acc. Voltage

GO. 80 kV

Structure Structure Type Length No. GO to be Analyzed

I.D. of Structure Nor,/ EDS (Nonasb. 4o Coord. No. F H CM um Sum Chrys.1 Amphibole I Nonasb. Ambig./ND Elements

I

—mil

I I Li I I I I [1 spectra IdenUfy all structures using EDS Check diffraction for asbestos ' Photo No. from I in 5 asbestos- Grid acceptance: structures up to 70e iTtm (let 4) containing samples) Struct = O.Sum & > 5: 1 Aspect Ratio <50% undlssolve <1 r, over app. or o e particulate coverage >50% coverage Totals.. 0% squares at least 20 unfolded or overlapped grid ' N- Not Observed (EDS spectrum or diffraction pattern) <5x holes or opaque areas ro Positive dllfraction ap•Uere P In run conforming Uoused parUon to laboratory identification criteria observed. of suer Chrysotile For chr7eaUlr. 0.73nm spacingtinsfor (020) refl ections, 0.03nm spacing for the bbyeT repeat. streaking Avoided portion

1 of (11D) and (130) reflections. of niter Fer amphibelea: O.OSam Layer Ilse ropsst, and appre:. Portionl of niter (2mm aide) Amphibole to 3.5 ratio of ,o. -twinned layer line spot spacing seamieaUea layer line repeat distance (0.53nm). m conforming to labo..tery Ambiguous EDS .pec AMPHIBOLES I ideati ication criteria observed.

I F= Single Fiber (t-3 intersections = 1-3 fibers) B= Bundle (>5 f►ben <1 fiber diameter apart) C= cluster (>3 intersections) M = Matrix v5n= Co Structure. Detected 25mm filler Stepping liulea: >50 s/G.O. or to 1d 4 G.O. cid te Cirocidoltte Anthophyllite Tremolite , ,,,,';t „ Non-asbestos

Non-Identified NYC-WTC 000104108