NYC-WTC_000199296

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Grnup #: 8809 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: o Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/5/02

Analysis Performed By: MARK PEYSAKHOV

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

1

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

v!= Positive diffraction pattern properties conformi ig to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% FjB C M >5|j V= EDS spectrum conforming to Iaborato7 holes or opaque areas identrfication criteria observed Chrysotile 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 NSD = No Structures Delected

CITY_21MC100_003049017

NYC-WTC_000199304