NYC-WTC_000188914

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NA"C BOE Volume (liters): 1944 Lab Group #: 5888 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 6 Area Examined: 0.04496

GRID BOX: .-6 3- Magnification; 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/14/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS No (Nonadb F B C M ^=05 u j Chrys Amphibole Nonasb Ambig/ND No Coord ^5|J I Elements)

Struct = > 0.5p. _> 5:1 Aspect Ratto Grid acceptance:

y = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B I C M i >5tJ

identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart ! Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos i Tremolite M = Matrix I Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003083165

NYC-WTC_000188914