Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I ATC ASSOCIATES INC. - TEM ANALYSIS LAB '1RCCF t : 5770 - 10 , e 131

Lab Sample No. 5255 Filter Type MCE 25 mm Operat.;r Client Spl. No. H-3 Filter Area 395 mm': Instrument I.D. EM 1: -RX Grid I.D. L' ? Disk No. Screen Magnification 15.400'1, (GO) Area 0.01 4 mm'_ Comments Acc. Voltage SC k7 Nc. GO to be Analyzed 4 721 4tt-i t Ccrsod

I GO. No Coord. Structure Structure Type No. F B C M 30.5 um Length

< 5 um ~ >. 5um Chrys.l I.D. of Structure Amphibole EDS (Nonasb. Nonasb. Ambig./NDI Elements N or,/ I

- C-

y Y/

I

- Photo No. (from I in 5 asbestos- Identify all structures uoing EDS Check diffraction for asbestos SLore all unrepeated spectra — containing samples) Grid acceptance:1 structures up to 70e fetm (1st 4) Struct. _ ,.sum & > 5:1 Aspect Ratio <50% undiseolvet filter, overlapped or folded <10% particulate coverage >50% coverage Totals N- Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid square, A Pndire dirrr.etinn ,..u..r.. e..r.l.,.......f..r...I... <5% holes or opaque areas F B C M >- 5um to laboratory identification criteria ob.erred. Unused portion - -- - - - --- - For ahry.eLil 0.79am Bracing for (020) reflection.. of filter Chrysotile 0.59nm epaaing (or the aver line repeat. atra.kiag Avoided portion of (110) and (190) reflections. of filter For amphibales: 0.09sm layer line repeal and approx.CC(D - - (2mm •ids) 9.5 ntis of non-twinned layer line spat .pacing to Amphibole layer line repeaat di.teaoe EDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous F= Single Fiber (1-3 intersections = 1-3 (ibers) AmosiLe B= Bundle (>3 fibers <1 fther diameter apart) C= Cluetar)>9 intersectional 20mm filter Crocidolite Non—aSbestosl M= Matrix Stopping Ruler AnthophyLlite ~L NSD= No Structures Detected 1 >50 ./C.O. or in 1st 4 G.O. Tremolite I Actinolite Non —Identified I L•\ DATA\PR1VATE\MI%2G\CA0D\7'EM9 / 922/98

NYC-WTC 000104342