NYC-WTC_000191798

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8109 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/15/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F 8 C M >=05 pi i>=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

"3 era’

Struct = > 0.5p > 5:1 Aspect Ratio Gnd acceptance: -st = Positive diffraction pattern properties conforming to 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 >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos M = Matrix Tremolite ■ Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC1OO_OO3O91739

NYC-WTC_000191798