NYC-WTC_000227927

NYC 9/11 Public Portal Document

TEM Asbestos (air ) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6777 Filter Type / Filter Area: MCE 385 mm- Lab Sample#: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/22/02

Analysis Performed By: ROMAN PEYSAKHOV

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

/Vw (-1 if “V

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: y'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory tdentiftoalion criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B ' C I M I n/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysoule AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_2 IMCl 0 Ci_0 0 0 4 912 8 4 NYC-WTC_000227927