NYC-WTC_000232454

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP #: 5515 - 09/1^/01

I Lab Sample No. Client: Spi. No. 034 S9Q53 Filter Type MCE 25.mm Filter Area 3-3 5 Operator

Inscrumenc I.D. EM LQ Grid I.D. Disk No.

I Screen Magnification 16,400X Acc. Voltage 8 0 kV (GO) Area Q.Q1L24 mm"2 No. GO to be Analysed 69 Comments (54.289 Struct. Corspd. to 70 s/mm"2.)

Length I.D. of Structure EDS structure Struclure Type I GO. No Coord. No. F B C M ^0.3 um < 5 um Sum Chrys. Amphibole Nonasb. Ambig./ND (Nonasb. Elements)

a

I I T )

I I I I I

Photo No. (from 1 In 5 aabeatoa- Identify all atructurea using EDS> Check diffraction, for aabealoa Store all unrepeated spectra containing samples) Grid acceptance: I structures up to Vga/i^m (lai 4)

I Struct. = > 0.3um & > S:1 Aspect Ratio <5QX undtasolvea filter, overlapped or folded <10% particulate coverage >S0X coverage Nsi Not Qbwerved (BPS apeclrum or diffraction pattern) at least 20 unfolded or overlapped grid squares ,/s PoaiUve dlffracUon pattern properties conforming <SX holes or ooaque areas F B Totals £_M > Sum to laboratory idantlflcatlon erilaria obaervsd. Far ehryaaUia: O.TPnm apaeinc for (0201 ranacUona. 0.33nm ipaelng for Ihe Isyar llna repeal, atreaklng of (HO) and {130) reflocUona. •Unuw4 portion af ftlUr ’Avoided portion af filler . Chrysotile I 5 TT 7 Por amphtbolee: 0.93nm layer Une repeal, and appro*. PorUan of fllUr (Smrn «(del 3.3 ratio of non-twlnned layer Une »pat (pacing lo aubject to suminaUon Amphibole layer Une repeal distance (0.33nm|. \/3 EDS spectrum conforming to laboratory Ambiguous IdenUflcaUon criteria observed. amphiboles F= Single Fiber (1-3 intersecUons = 1-3 fibers) Amoaite 8s Bundle f>3 fibers <l fiber dlameUr apart) ZSmin rnur Crocidolite Non-asbestos Si I-------- 1 aioppln, »»4« I-------- Anthophyllite NSD= .No Slructure. DoUcUd | ^°° | Tremolite

I Actinolite Non-Identified U\D*TA\PR1VATK\1<1KKC\CAIID'TZM3 a/22/08

CITY_21MC100_0 10237415

NYC-WTC_000232454