NYC-WTC_000230050

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1960 L2ib Grouji^ 7185 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: ■13 .Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/23/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 'J= Positive diffraction pattern properties conforming to <50% undissolved filler, 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 >5u >1= 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) Anthophyllits Non-Asbestos I remolite M = Matrix Non-Identified Actinolite NSD = No Structures Delected

CONFIDENTIAL, CITY_21MC100_003388668 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230050