NYC-WTC_000189131

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6619 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 2/10/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 9 EDS (Nonadb No F B C M >-05 pi >=5(j Chrys Amphibole Nonasb Ambig/NC No Elements)

T <7 -—J -5., II T CT'■ u

Sti’uct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: /= Positive diffraction pattern properties conforming to <50% undiseolved filter, 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 >5pi N EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chiysotile f 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_003083951

NYC-WTC_000189139