Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS :.AE GROUP d 5'7:; - 10; , 5'): (7 Lab Sample Nc. 52551 Fester Type MCE 25 mm Operator L L- Client Spl. No H-7 F1.lter Area 385 mm 7 Instrument i.D EM 10 CRX Grid I .D. '-I r~ 7 Disk No. Screen Magniizcat:.on 15,400X (GO) Area 1.011_4 mm''_ Comments Acc. Voltage 80 kV No. GO to be Analyzed o 4.^D1 Struct orsod .c

GO. Structure S ure Ty Length I.D. of Structure EDS N ors/ I No Coord. No. F H C M <~5 m >. Sum ~Chrys.l Amphibole (Nonasb. Nonasb. Ambig./ND Elements)

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I ___ __L_________

Li

i i I

Photo No. (from 1 in 3 asbestoo- Identify all structures using EDS Check diffraction for apsbeataa Store all unrepeated spectra containing samples) I rid acceptance: structures up to 708 ihim (lot 4)

I Struct = > O.Sum & > 5:1 Aspect Ratio <50% undiaaalve filler, overlapped or folded <I0% particulate coverage >50% coverage N= Not Observed (EDS spectrum or diffraction pattern) lat least 20 unfolded or overlapped grid squares Totals

Positive diffraction pattern properties conforming <3 holes or o a ue areas I F B C M >j 5um to laboratory Identification criteria observed. Unused portion For abeyeoulr. 0.75om s slag for (020) renecuana, at filter Chry sotlle I 0.59am apaoiag for the later lino repeat• streaking of (110) and (130) reflections. For amphiboles: 0.59nm layer line repeat and appraa. Portion of niter Avo/dad portion ar niter (2mm aide) 9.5 ratio of non-twinned Is line spot apoaing to subinet m eaam:nauan Amphibole layer line repeat distance (0.59nm). EDS spectrum conforming to laboratory identification criteria observed. AMPHIBO LES Ambiguous m g u011S ' F= Single Fiber (1-3 Intersections = 1-3 fibers) AImosite B= Bundle (>9 fibers <1 fiber diameter apart) 25mm filter Crocidolite I Non —asbestos) C= Cluster (>9 intersections) M= Matrlg r Slopping Ralaa: L_____ ^ Anthophyllite

LI NSD= No Structures Detected L•\DATA\PRIVATE\MIKEG\CADO\TEM9 >50 a/G.O. or in let 4 G.0.

9/22/98 Trelllollte Ac Cinolite Non —Identified

NYC-WTC 000104341