NYC-WTC_000228362

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6416 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 12 Grid Opening Size: 0.01124

fiiient #: 12 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/24/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS (Nonadb No F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/NO No .Coord <5m Elements) ( P’2. .. if —JL— f(

Struct-> 0.5m > 5; 1 Aspect Ratio Grid acceptance: PositivB diffracticn pattern propertiesconforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% pardculata coverage >50% coverage ate least 2C unfolded or overlapped gild 3puares <5% F B C M >5p '1- EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F s Single Fiber Amosite Crocidolite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart C => Cluster (>3 Intersections! , Anthophyllite Non-Asbestos i Tremolite M = Matrlx Actinolite Non-Identified NSD : No Structures Detected

CITY_21MC100_002900053

NYC-WTC_000228362