NYC-WTC_000202266

NYC 9/11 Public Portal Document

TEM Asbestos fairV Count Sheet Client Name: nyg bge: Volume (liters): Lab Group #: 6409 Filter Type / Filter Area: MGH r 13«5 mnV Lab Sample #: 4 Grid Opening Size: Client Sample #: 04 Area Examined: A) .04496

GRIP BOX: Magnification: 20,000 GRIP ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1723/02'

Analysis P er formed By: MARK PtySAKHOV

GO. Structure ! stricture “ype Length ID of structure N or V EDS No (Nonadb I .F fi C M >=05pJ I >=5p Chrys Amphibole Nonasb Ambig/ND 'No Coord <5p Elements)

cr /

Struct = > G.5n-> 5:1 Aspect Ratio Grid acceptance: /- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed ■ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped'grid squares <5% F B C M EDS speGtrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ‘ AMPHIBOLES ; Amphibole I Single Fiber Amosite , 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite J Ambiguous . C:= Cluster (>3 Intersections) Anthophyllite i Non-Asbestos i M = Matrix , Tremolite I Actinolite I Non-Identified NSD = No Structures Detected

CITY_21MC100_003271260

NYC-WTC_000202266