TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEMAsbe^osfairLCount Sheet Client Name: NYC BOE Volume (liters i: 1818 Lab Group #: 6576 Filter Type / Filter Area: MCE 385 mnr Lab Sample #: ]0 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/6/02

Analysis Performed By: MARK PEYSAKBOV

GO. Structure Structure Type Length ID of Structure Norv EDS I No '=05 p : ■=5p (Nonadb F B C M Chrys Amphibole I Nonasb Ambig/ND No Coord <5p ——4—— 1 Elemsnls) j

I J[ 1 I 1 1

h I !

l—f1 iT I I

Struct = > 0.5 u > 5:1 Aspect Ratio Grid acceptance:

0= Positive diffraction pattern properties conforming to <50% undissolvec filter, overlapped or folded Totals <10% particulate coverage >50% coverage ale laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% f F B ! C M >5u vfb EDS spectrum conforming to laboratory holes or opaque areas identification enteria observed Cluysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections' Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite I NSD = No Structures Delected

CITY_21MC100_003103009

NYC-WTC_000183713