NYC-WTC_000191920

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: N YC BOE Volume (liters'): 1920 Lab Group #: 8226 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 7 Area Examined: 0,04496 mm"

GRID BOX: Magnification: 20,000 GRID ID: 2/^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: ROMAN PEYSAKHOV •f GO. Structure Structure Type Length ID of Structure N or ■/ EDS (Nonadb No F B C M >=05 p -I >=5p Chrys Amphibole Nonasb Ambig/ND No foord <5m Elements)

Struct = > 0.5|i >5:1 Aspect Ratio Grid acceptance: ■ 'J= Positive diffraction pattern properties conforming to <50% undissolyed filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate cbverage >50% coverage ate least 20 unfolded or’overiapped grid squares <5% F B C M >5m '1= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile j AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite , M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003091949

NYC-WTC_000191920