NYC-WTC_000206947

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7751 Filter Type / Filter Area: MCE 385 nun" Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 3 Area Examined: 0.04496 mm" GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 5/16/02

Analysis Performed By: 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)

Struct = >0.5n >5:1 Aspect Ratio Grid acceptance: •7= Positive diffraction pattern properties conforming to pX^atewe^e >To%^eragTate Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5p • ’/= 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 Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC100_003014402

NYC-WTC_000206947