NYC-WTC_000217802

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6556 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

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

Analysis Performed By: MARK PEYSAKHOV

GO^ Structure Structure Type Length ID of Structure N or \ EDS ! (Noradb i No Coord No F B cM >=05 u <51J >=5p Chrys Amphiboie Nonasb Ambig/ND Eiements) 1

Struct = > 0.5p 5:1 Aspect Ratio Grid acceptance; 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 orovedapped grid squares <5% F B I C i M i >5m a/= EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES | Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matrix Actinolite Non-Identifiecl USD = No Structures Detected

CITY_21MC100_002877878

NYC-WTC_0002 17802