Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

ANALYSIS ATC ASSOCIATES INC. - TEM LAB GROUP # 5761 - 10/25/01 Operator Filter type MCE 25 mm Lab Sample No. 62180 Filter Area 385 nun"2 } Client Spl. No. 07 Disk No. Grid I.D. Instrument I.D. EM 10 CRX Comments (GO) Area 0.01124 mm"2 Screen Magnification 16.400X 4.721 Struct Corsod. to 70 s;mm No. GO to be Analyzed 6

I Arc. Voltage 80 kV

Structure structure TYPO Length I.D. of Structure N or ✓ EDS (Nonasb. j GO. um gum Chrys. Amphibole Nonasb. Ambig./ND Elements Vo1Coo l No. F H C M

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I I Li I I I spectra Store all unrepeated heck to for ucUon Identify all structures cuing BDS ubeut(ist 4) Photo No. from 1 In S asbestos- rid acceptance: tuns 70./&m containing samples) <S0% undivaoIV r. overlapped or o e O g Ratio age Struct. = > 0.9um & > 5:1 Aspect <10% particulate coverage >50% cover grid squares ' • dUfnation pattern) at least 20 unfolded or overlapped F B C M >1 5um N. Not Observed (BD9 •peatrum or <37L holes or o a ue erase PnparUas conrorming Pwltiva dlffraaUfn pattern criteria observed. Unused portion to laboratory identification of niter Chrysotile 0.79am •peel for (020) reflections, For ehryoUlr. •tieakial Al lftIt portion 0.59nm •pacing for the lq•r life npna4 of Hoer of (110) and (190) ntleeUana• Portion of niter 2mm *tee) Amphibole opal u i apProa. For Uo of lse: 0.09nm layer line line spot spacing to aubJacl b ssamlaaUon 9.5 ratio of non -twinned Layer layer line repeat distanee (0.59nm). AMPHIBOLES Ambiguous 8DS specwm conforming to laboratory IdenUneation criteria observed. AmODlte F. single Fiber (1-9 lntereectians •t 1-3 fl ) 25mm filter Crocidolite Non-asbestos diameter apart) B= Bundle (>3 intersections) fibers <1 fiber Rules: Anthophyllite C= Cluster (>9 steppleg Y= Matrix oeteceea ,30 •/C.0. or to tat t C.O. Tremolite 4 , innlite Non -Identified NYC-WTC 000104191