NYC-WTC_000228511

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Nanae: NYC BOE Volume (liters): 1784 Lab Group #: 7376 Filter Type / Filter Area: MCE 385 mnV Lab Sample#; 17 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/10/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS i (Nonado i No F B C M >’05 u >=5iJ Ch^s Amphibole Nonasb Ambig/ND No Coord <5u Eiements) i

3 e

Struct = > 0.5(4. .> 5:1 Aspect Ratio Grid acceptance: V-- Positive cWraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed < 10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M i >5u EDS spectrum conforming to laboratory holes or opaque areas identiiication criteria observed Chrysotile AMPHIBOLES Amphibole r = Single Fioer Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified i NSD ’ No Structures Detected

CITY_21MC100_002900835

NYC-WTC_00022851 1