NYC-WTC_000215532

NYC 9/11 Public Portal Document

'TEM Asbestos (air) Comat Sheet Client Name: NYC BOE Volume (liters): IS SO Lab Group #: 6831 Filter Type / Filter Area: MCE 385 mn- Lab Sample #: 19 Grid Opening Size: U .01124 Client Sample #: T22 Area Examined: 0.04-196 mm- ■

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/25/02

Analysis Performed By: MARX PEYSAKHOV

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

if. 3 f- -O

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 'J- Positive diffraction pattern properties conforming to <50% 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 >5u x/= EDS spectrum conforming to laboratory holes or opaque areas. identification criteria observed Clirysotile 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 Delected

CITY_21MC100_002872537

NYC-WTC_000215532