Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

TEM ANALYSIS I ATC ASSOCIATES INC. - 10/25/01 LAB GROUP #• 5761 - Operator Filter Type MCE 25 mm 62212 ' Lab Sample No. Filter Area 385 mm"2 ~~ Disk No. Client Spl. No. 39 Grid I.D. Comments Instrument I.D. EM 10 CRX (Go) Area x.01124 mm"2 CorsPd to 70 s/mm^2 16 40OX 4.721 Struct Screen Magnification Analyzed 6 No. GO to be Arc. Voltage 80 kV EDS I.D. of Structure Nor,/ (Nonasb. structure Type Length Elements GO. Structure Am hibole Nonasb. Ambig./ND Um > Sum Chrys. No Coord. No. F B C M

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I I 1 1 I I I I 1 Identity atl s Gri d a Check diffraction for asbastm (let 4) Store all unrapeatad apectralj

c structure■ u to 70a ~pm `Photo No. !corn 1 in 5 coniainins samples) asbestos- ceptanceD <5o7L undissolva r. over apps or o a tals 'I'Q Ratio particulate coverage >50% coverage uarea Strict. = > o.5um & > 5:1 Aspect <10% at least 20 unfolded or overlapped g F B C M > 5um or dUfncUon pattorn) <5% holes or opaque areas W. Not Observed (RDS spectrues ptvpertias conforming Unused Portion positive diffraction pattern of filter Chrysotile V' to laboratory identification erltarle observed. of for (020) "naeUoa■. Avoided portion 0.17nm a For ebrrsoUles for the la7a Uce "peal. slrealNng of filler of (110 'p`°((l00) "nnetions. (Ila) and Portion of altar (Emm aids) Amphibole of fins "petat. and singapp"s. is wofact to 0.07nm toyer Per amphiboles nned lager ling spo mo examination s a "Uo of see distance (O.e3em)• Ambiguous toyer flan "pest AMPHIBOLES 1108 spectrum criteriaoonformins to laboratory ✓0 ldngleenU Fiberibon observed. Amoslte s 1-3 fiber') 25mm "tier Crocidalite Non— P= Single >3 (1-3 re t1 fIbecLion■ diameter apart) fiber ACrocid yllite B= Bundle >0 ntta" <1 9toppint Ruler. .~ ,. ~. . ~1 intnneeUona) T hop

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