Asbestos fiber analysis results, H.S. of Economics & Finance, Apr

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7351 Filter Type / Filter Area: MCE 385 rnm- Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 03 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: . Accelerating Voltage: lOOKpV ■■ # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: ________ ^^^282^^21

MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or EDS (Nor.adb No F B C M >=05 p ) '=5tJ Chrys Amphitole Nonasb Amoig/ND No Coord <5e Elements)

8/1

i Struct = >0.5p >5:1 Aspect Ratio Grid accepiencE'

9= Positive diffraction pattern properties conforming to <50% undissoived tiller, overlapped or folded Tpt^ <10% particula'.e coverage >50% coverage ate laboratory identification criteria observed least 20 unfoldec or overlaopec grid squares <5% 1 M i tDS spectrum corrforming to laooratory doles or cpaque areas p idenliiicatiori criteria observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite El - Bundle (<j fibers <1 fioer diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections! Antnophyllite Non-Asbestos Tremolite M : Matrix NSD = No Structures Detected Actinolite , Non-ldentified ; ( 1 i CONFIDENTIAL, CITY_21MC100_0 03459950 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179545