NYC-WTC_000223876

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7771 Filter Type / Filter Area: MCE 385 tnm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm- GEUD BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/17/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V ECS No (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5|J Elements) ,

Struct = >0.5p >5:1 Aspect Ratio Gnd acceptance: ■v = Positive diffraction pattern properties conforming to <50% unOissolved filter, overlapped or folded Totals latxiratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5iJ '/= EDS spectrum contorming 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 NSD = No Structures Detected

CITY_21MC100_002920079

NYC-WTC_000223876