NYC-WTC_000199425

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sh^ Client -Name: N YC BOE 'Volume (liters): 1936 Lab Group fe: 8760 Filter Type / Filter .Area: MCE 385 mm-- Lab Sample #: 9 Grid Opening Size: 0.0112-i Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or n EDS I.. (Nonacb No r B C M >=05 p Chrys | Amphibole Nonasb Amcig/ND No Coord Elements) <5p

I I

g —

-J : [

I

1-4

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

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded TO tabs <10% particulate coverage >50% coverage ate laboratory loentification criteria observed

v= EDS speclrum contcrminc to iaooratory dentification criteria observed least 20 unfoldec or overlapped grid squares <5% ]’ holes or opaque areas ___ Z Chrysotile lO B C I >5u

AMPHIBOLES Amphibole P = Single F Per Amosite 3 = Bundle (<3 libers <1 fiber diameter apart Crocidolite •AmbiguoLts ■ C = Cluster (>3 Intersections) Anthophyllite Non-Asbesfo?^ Tremolite M = Matrix Non-identified ' Actinolite NSD = No Structures Detected

CITY_21MC100_003033927

NYC-WTC_000199425