NYC-WTC_000213969

NYC 9/11 Public Portal Document

r XJitl Asoestos (air) Count Sheet Client Name: NYC BOE Volume (Titers): 1816 Lab Group #: 8119 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 16 Grid Opening Size; 0.01124

Client Sample #: 18 Area Examined: 0.04496 mm= GRID BOX: Magnification; 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/15/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No (Nonadb F B C M >=05 p Chrys Amphiioie Nonasb Ambig/ND No Coord voora w—\ <5p Elements)

/5 r-

Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to undissolved filter, overiapped 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 >5p 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) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Delected

CITY_21MC100_002869865

NYC-WTC_000213969