NYC-WTC_000225995

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 6280 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 8 Area Examined: 0.04496 mm2

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 1/8/02

Analysis Performed By: .ROMANPEYSAKHOV

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

""'fV -JI___

Struct = > 0.5p > 5:1 Aspect Ratio Grid acxeptance: 'J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laborato7 identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u A- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ' AMPHIBOLES ! Amphibole F = Single Fiber i Amosite B = Bundle (<3 fibers <1 fiber diameter apart 1 Crocidolite Ambiguous C = Cluster (>3 .Intersections) i Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_010187138

NYC-WTC_000225995