Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

- TEM ANALYSIS ATC ASSOCIATES INC. 10/25/01 LAB GROUP #. 5762 - Operator mm Filter Type MCE 62231 Lab Sample No. Filter Area 385 m"2 Disk No. Client Spl. No. 17 Grid I.D. Comments instrument I.D. EMEM 10

I Cors d. to 70 s ntm" 2 (GO) Area 0.011 = _ q .721 Struce . 16 Screen Magnification No. GO to be Analyzed 6 80 kV EDS Acc. Voltage Nor,/ I.D. of Structure (Nonasb. Length Elements

I Nonasb. Ambig./ ND Structure Type GO. Structure Amphibole um >, 5um Chr s. No Coord. No. F B C M

~ Z _ v x .Z ~ v ~ — v Y J ~/ — v i ce/

I I 1

I

i- EDS Check diffraction for/bee flat 4) asjmetoa- Identif y all aWcturoa uainR .._Lures ten to 70e

■ Photo No. (from 1 in S - -- containing eampic•/ Grid acceptance <Oo7G aver - aooea or coverage 1 Tom act Ratio articulate coverage >00% verid 5:1 Mp overlapped L StrucL = > 0.5um & > pattern) ~Laleeast 20 unfolded or spectrum or diffraction areas N. Not Observed (EDS <5% holes or o a tee rot»rue. coeformini Unawd portion diffraction pattern P Identification criteria observed. of filter Chrysotile to laboratory .~1a[ far (020) re(isetiom. of rite portion Par chrysotils: 0.73nm line nP°a4 stroaldnd of niter a.530m apaNaa for rofithe layer eatioos. Portion of filter /d•) Amphibole of (110) and (i—) layer line repeat. and a to ro:. ,abject t° O.t11am apacing La saamlaaUon For amne al••: l r line spot ratio of °°°~ Ambiguous layer tine repea a ~a: io°mj conforming to laboratory MPH{BoLES SOS .pecu+tm / = 3.5 Amosite idenu aeon criteria observed. filter roeidolite Non —asbestos (1-3 intersections = 1-3 fibers) 20mm P- Single Fiber fibers<1 fiber dlamete[ apart) Se ~ ~-- FA.th rcid Th yllite p- 9undle (>3 oo'n

NYC-WTC 000104109