Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

I TEM ANALYSIS ATC ASSOCIATES INC. - 10/25/01 i~ LAB GROUP #• 5762 - Operator Filter Type MCE Lab Sample No. 62232 mm~2 Filter Area 385 ~/ ~o J P YJ Disk N t Client Spl. No. 18 e Grid I.D. Comments Instrument I.D. EM 10 CRX (GO) Area ~4 0.0=1 ~2 `" Corspd. to Screen Magnification 16 400X 6 ( 4 72' Strucc. Analyzed No. GO to be Acc. Voltage 80 kV EDS I.D. of Structure Nor ✓ (Nonasb. Length Elemen Gil. Structure Structure Type ? p.5 um Am hibole Nonasb. Ambig./ND 5um Chr s. No Coord. No. F B C M < 5 u

ZT 11 II z 1/

I I i:i I I I I ptet 1 Cheer attire' (let 4) Identity all s structures u to 7Os tltm

p `Photo No. (tram 1 in 5 containing samples) struct. _ 4, O.Sum & > N. Not Observed (603 asbestos-

5:1 AsPeCL RaUo spectrum or diffraction cr►a

pattern) at . <50% undiaaolve ctO% particulate least ce 20 r, overlapped coverage >50% coveragesquare! untolded or overlapped <5% holes or o a ue areas or o e

grid F B Total C 1VI pattern properue■ conforming Unused portion = positive diffraction lcaUon criteria observed. Chrysotile ~ lebcr.bq IdanU to itive for (020) •sUons, of filler Avoided porUoa 0.73nm aWalaa Per ebrfsotlr. for the layer ins repeal .lreablas or filter 0.59am Spading ren•euona. (2mm artda) Amphibole of (110) and (3o) Pertlea of filter layer Itns upset. sad aPpr•a• whlact to 0.O7am For amPblbolau: twinned [line t aPa vial to edamInsUon yS nun of non- distanes ( Ia6.5.tam). ~° Ambiguous layer king repeat laboratory IBO EDS .peetram conforming to IdentticeUon criteria criteria observed. AII1o31te Crocidolite Non - asbestos 25mm filter F= Single Fiber (1-3 fiber'<1 IntanecUons fiber diameter 1-3 fibers) gw apart) pnthOphylltte B= Bundle (» vtng Ruin:

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