NYC-WTC_000197994

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: MYC BOE Volume (liters): 1920 Lab Group #: 7651 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm^

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

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No Amphibole (Nonadb F B C M >=5p Chrys Nonasb Ambig/ND Elements) No Coord <51J

- 42 /O'

Struct = > 0.5|i > 5; I Aspect Ratio Grid acceptance: •J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped 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 >5m V= EDS spectrum conforming to lahorafpry holes or opaque areas identification 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 Detected

CITY_21MC100_0 03029561

NYC-WTC_000197994