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← Document results/DEP Box 36/105 DUANE ST 1001650, 151/1
Document / 294 pages

Ambient air sampling report for 105 Duane Street, Feb 2002

Machine-extracted title · confidence 98%

Summary of ambient air sampling and visual observations at 105 Duane Street following the WTC collapse.

NYC-WTC_000104027–000104320

Folder label: “105 DUANE ST 1001650, 151/1

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Scanned page image, NYC-WTC_000104134
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

Li

ATC ASSOCIATES INC. - TEM ANALYSIS LAB GROUP #: 5762 - 10/25/01 Operator Filter Type MCE 25j Lab Sample No. 62257 Filter Area 38 mm"2 Client Spl. No. 43 Disk No. Grid ID . . Instrument I.D. EM 10 CRX Comments (GO) Area 0.011_4 mm"2 Screen Magnification 16,400X ( 4 '721 Struc" Corspd. to 70 simm = No. GO to be Analyzed 6 Acc. Voltage 80 kV

Nor,/ EDS I. D . o r Structure (Nonasb. Chr s. Amphibole Nonasb. Ambig./ND Elements

wMR ?' NONE _________

1 7 Lit!• ~

~MONO ~~00101M= I aai aM= ~~—IaII~ NEON

liii I

Store all unrepeated spectra Check diffraction for asbestos IdenUf y all iWeturos uein EDS 709 1pnm (lot 4) Photo No. (from 1 In 5 asba.tos- Gri acceptance: structures u to containing samples) Ratio <50% undlssolve r, overlapped or e e covers`. Totals SWct = > 0.5um & > 5:1 Aspect <10% particulate coverage >50% overlapped grid aquarea F B C 5um Observed (SOS spectrum or diffraction pattern) at least 20 unfolded or M Na Not <5Z holes or opaque area. artial co nforming Positive dlffraIdsn pattern rops ebaenad. p Unused portion criteria Chrysotile to Laboratory Identification of filter Far abr7wUln 0.73nm s cle9 far (020) rsneetlons. ided portion Av nite of 0.03nm apactas for the sr lino repeat. streaking of filter at (110) and (130) rsflacuons. Porno of filter 2mm wide) Amphibole Pm ampbib.leo: O.OSem Vr Itne repeat. and appm to -twinned Iayyaarr Itae spot spacing to eaamlinatien 3.0 ratio of ran layer line repeat distance (O.23nm). AMPHIBOLES Ambiguous SD9 ■ from conforming to laboratory iden IcaUon criteria observed. Arnasite F. Single Fiber (1-3 intersections = 1-3 fibers) 25mm filter Crocidolite Non — asbestos R= Rundle (>3 fibers <I fiber diameter apart) Anthophyllite Cc Cluster (>3 intersections) 9tappiag Rule.: Y= Matrix >10 ./c.o. or in let 4 c.o. Tremolite Non -identified NYC-WTC 000104134

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NYC-WTC_000104134Source: NYC Law Department, mirrored locally

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