NYC Law Department release
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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_000104128
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

I TEM ANALYSIS Li ATC ASSOCIATES INC. - LAB GROUP # 5762 110/25/01 Operator 55 mm

I Filter Type MCE Lab Sample No. 62251 Filter Area 3 5 mm'2 Disk No. Client Spl. No. 37 Grid I.D. Comments Instrument I.D. EM 10 CPX 0.01 124 mm'2 (GO) Area to 7o simm'2

I Magnification 16 400X ; 4.121 Struct. Corsod. Screen No. GO to be Analyzed 6 Acc. Voltage 00 kV EDS Structure N er (Nonasb. Structure Type Length GO. Structure >0.5 um Amphibole Nonasb. Ambig./ ND Elements ~ 5ufn Chr ys. No Coord. A/6

I

JJ Store (lot 4)

containing samples) <50% undianoWed fitter, o•en~Fr-`- -- --- T as >50% coveragr Aspect Ratio <10% particulate coverage StrucL = ) O.Sum dt > 5:1 least 20 unfolded or overlapped grid squares diffraction pattern) at Nn Not Observed (SOSspectrum or conforming <37L holes or opaque arose neUen pattern properties unused Poruoa ✓a Positive dift to laboratory identification criteria observed. of titter Chrysotile For chrfeoU►sr 0.75n10 .peal for (~:Lmnti es Aroidad porUno for Ibs 4p■r Ilan rope or filter 0.55am .pees of (110) and (150) raneeuom' Portion or niter mm -id-) Amphibole line repsat. and approa. sublet to For amPbibolsa: 0.03010 layer lin. .pot .pacing to ...min.U.- 5.5 ratio or aoa-tmanad lafor (0.030). layer tine epeat distance Ambiguous gDS spectrum conforming to laboratory _AMPH1HI ES (denlSttcaUon criteria observed. AInoeite tntcrsectiona = 1-3 fiber*) 25mm filler Crocidolite Non —asbestos F. Single Fiber (1-3 B- Bundle (>5 fiber* <1 fiber diameter apart) Antho h llite Inter+eetian*) Stepplag BeIQ■ 4 Go c= Cluster >3 Tremolite Nl-- _td.ntified

NYC-WTC 000104128

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NYC-WTC_000104128Source: NYC Law Department, mirrored locally

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