NYC-WTC_000226788

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6853 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm-

GRIP BOX: Magnification: 20,000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/28/02

Analysis Performed By: ROMAN PEYSAKHOV

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

/17SP K{ —

10

I-

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; '/= Positive diffraction pattern properties conforming to <50% tindissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate ■ laboratory identification'criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5 (J ’/= EDS spectrum conforming to laboratory , holes or opaque areas identification criteria observed Clu'ysotile 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_002923058

NYC-WTC_000226793