Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

I .. TEM ANALYSIS ATC ASS OCIATES INC. - LAB GROUP # 5762 - 10/25/01 pperator Filter Type MCE 25 mm Lab Sample No. 62254 Filter Area 385 Disk No. Client Spi. No. 40 Grid I.D. Comments _ Instrument I.D. ~ EM 1 (GO) Area ~m 0.011 2 to 70 s/mm 2 ( 4.721 Struct. Cors d. Screen Magnification 16 40aX 6 No. GO to be Analyzed EDS Acc. Voltage 80 kV N °r ✓ I.D. of Structure (Nonasb . Structure type Length Elements Nonasb. Ambig. ND GO. Structure 3p• 5 um >, Sum Chr s. Am hibole No Coord. No. F B C M < 5 um

z LI

I I I I I I I structure' unn o" (tat 4)

11 in S aabestoa- Identify all ■tr Photo No. (from 1sample,) rid acceptance: Ot S containing <50%undfaaelve <S0 er. 0.5um & > 5:1 A'pe0t ~ tiO <lOX particul►te cover---overlaped--- - - ir id aquaroa Struet = .t leant 20 unfolded or pattern) Na Not Observed (BUS spectrum or diffraction <5% holes or o a tie areas Pa Onu..a poru.a pattern properties Conforming Chrysotile Peaiti■e diffraction ldenUftcaUon criteria observed. of nitar La teboralory ection..

I For abry■oUtr. Na 0.'rSnm .ppeaan .pact.g for the ta751 or (Ito) •n (130) reflections. For ampblb.lal O.03nm 9.0 ratio of non-tnlneed lo~~

lq.r la ,.r for

Ile. (020) refl rephL ■tnaWog repeat. .ad approa. lin..ot .pa°la[ to Portion ■r niter .ubJaat to eumleaU.a Avoided portion of filter Amphibole

distance (o53am)• Ambiguous layer ha. repeat LU ES L' F= gOg ■pecam spectrum coororming identification criteria observed. Single Fiber (1-0~i B= Bundle (>3 f(bere-^r~nn•1 nber to laboratory

= 1-0 frt) Aiameter ap.K __~ 9lDCala■ Rule.: 2amm nibr AIft081te Crocidolit- pn thophyllite _ -_. ~,:~.. Non—agbesto: _. •: r: ...+

NYC-WTC 000104131