NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3900 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sanaple #: 3 Grid Opening Size: 0.01124 Client Sample #: 3 Area Examined: 0.24728 mm^

GRID BOX: 1/75, Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS No (Nonadb F B C M >=05 M >=5|J Chrys Amphibole Nonasb Ambig/ND Elements) No' Coord <5p

ir^ s-QS- 1/

r/ 7

, > ypa //V 47^ 77 ^ a TV? zz /< kg Zz

22^

Photo No. (from 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0.5p _> 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M ! >5u holes or opaque areas EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ' T remolite M = Matrix Non-Identified NSD = No Structures Detected Actinolite 1

CITY_21MC1OO_OO3O69436

NYC-WTC_000202892