NYC-WTC_000214602

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7980 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/6/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure ■ Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05^1 :>=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

4 /Se

Struct = > 0.5h _> 5:1 Aspect Ratio Grid acceptance: A- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals Iaborato7 identification criteria observed <10% particulate coverage >50% coverage ate 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 Famphiboles i Amphibole F = Single Fiber : Amosite i B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite I Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos : Tremolite M = Matrix 5 Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl0 0_0 0 0 4 6 3101 NYC-WTC_000214602