NYC-WTC_000182760

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 5974 Filter Tvpe / Filter Area: MCE 385 Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 6 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ED : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/26/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v? EDS (Nonadb No F B C M >=05 p >=5^1 Chrys Amphiboie Nonasb Ambig/ND No Coord <5p Elements)

07

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5|j 'I - EDS spectrum conforming to laboratory holes or opaque areas identification critena observed Chrysotile AMPHIBOLES j Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart ' Crocidolite Ambiguous C = Cluster (>3 Intersections)-- i Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified ! Actinolite NSD = No Structures Detected CITY_21MC100_003101043

NYC-WTC_000182768