NYC-WTC_000201177

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7909 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0;01124 Client Sample #: 02 Area Examined: 0.04496

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/30/02

Analysis Performed By: MARKPEYSAKHOV

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

Struct = > 0.5p. >5:1 Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laborato7 - 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 Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

NYC-WTC_000201178