NYC-WTC_000228331

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1810 Lab Group #: 6375 Filter Type / Filter Area: .MCE 385 mm^ Lab Sample #: 3 Grid Opening Size: 0 01124

Client Sample #: 03 Area Examined: 0.04496

GRID BOX: M agnillcation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/19/02

Analysis Performed By: ___£2 MARK PEYSAKHOV

QO. Structure Structure Type Length ID of Structure N or V EDS (NonadS No F B C M >=’05 p >=5p Ch^s Amphibole Nonasb Ambig/ND No .Coord <5p Elements]

A_—

a

Struct “ > 0.5p > 5:1 Aspect Ratio Grid acosptance: Vx Positive diffraction pattern properties conforming to <50% undissolved Alter, overlapped or folded Totals laboratory identifIcatiOT criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chjysotile amphiboles Amphibole F= Single Fiber Amosite Crocidolite Ambiguous B = Bundle (<3 fibers <1 liber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M : Matrix Actinolite Non-Identified NSD = No Structures Oeiecled

CITY_21MC100_002899978

NYC-WTC_000228331