NYC-WTC_000212863

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: rTYC BOE Volume (liters): 1920 Lab Group #: 8077 Filter Type / Filter Area: MCE 385 mrn^ Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/13/02

Analysis Performed By: r ROMAN PEYSAKHOV

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

9 X 7

Struct = >0.5p >51 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties confonning to <50% undissolved niter, overlapped or folded Totals laboratory identification critena observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum sonforming to laboratory holes or opaque areas Identification cntena observed Chrysotile 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 = Math): Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002852466

NYC-WTC_000212863