NYC-WTC_000188642

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP #: 5637 - 10/14/01 Lab Sample No. 61060 Filter Type MCE 2 5 mm Operacor ClienL Spl. Nc. NSHS-EIR-10/13 - 37 Filter Area 285 mm"2 Instrument: I.D. EM 10 CRX Grid I.D. ^7 Disk No. Screen Magnification 16,40OX (GO) Area 0.Q1124 mm"2 Comments. Acc. Voltage 80 kV No. GO to be Analyzed __4 ' 3.147 Scruct. Corspd. to 70 s/mnrz.)

structure Structure Type Length I.D. of Structure EDS GO. (Nonasb. No Coord. No. ^0.5 um F B C M < 5 um > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

7/^ / P2 M2 (/ 7 77 ( V </

7/

Store all unrepeated spectra—^ Photo No. (from 1 in 5 as testos- dentify all struoturcsusinjEDS Check diffraction for asbestos eontaining samples) Grid acceptance:! structures up to TOs/i^im (l«l 4) <50X undiasolved filler, overlapped or folded Struct, s > 0.5um Ic > 5:1 Aspect Ratio <10X particulate coverage >S0X coverage Totals N= Not Observed (EDS spectrum or dlflrseUon pattern) at least 20 unfolded or overlapped grid squares >/= Positive diffraction pattern properties conforming <S% holes or opaque areas F B C M > Sum to laboratory idenUfieation criteria observed. Inussd portion Fer chryioUle: O.Tanm spaeins for (020) renecfclons. of nitar Chrysotile Q.a3nm apsclnf for the layer line repeat, streaking -Avoided portion of (110) and (130) refleetlens. of filter Per amphibolea: 0.93nm layer line repeat, and approx. PorUen of fllLer (Zmm wide) 3.9 ratio of non-twinned layer line spot spaeinc to ■object to Amphibole layer Une repeat distance (0.63nm). sxaminaUon

v/s EDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous Pa Single Fiber (1-3 interseeUona a 1-3 fibers) Amosite Ba Bundle (>3 fibers <l fiber diameter apart) ZSmin nilar Crocidolite Non—asbestos K uXTl ‘"1*™“““"*) _____ SLoppln. Ru...: I------- Anthophyllite NSD= No Slructurp. IXtacUd \ »A-°- ‘*‘4 Tremolite Non—Identified L-\DATA\P2rVATE\MIKBC\CaDO\rEl<a 9/22/96 Actinolite

CITY_21MC100_003082185

NYC-WTC_000188642