NYC-WTC_000202593

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume inters): 1936 Lab Group #: 9213 Filter Type / Filter Area: MCE 385 mm- CahSample^ 1 Grid Openin'’Size 0.01124 Area Examined: 0.04496 mm* Client Sample #: 1 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26'200

fl Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or M EDS (Nonaob Mo F B C M AN : •=5|J Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5u C - ' iN

Photo No. (trom 1 in 5 asbestos containing samples) Grid acceptance: Struct = > O.bp > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals Ay= “osiiive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory loentification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B C M >:!J

)S spectrum conforming to laboratory loentification criteria observed Chrysctile AMPHIBOLES i Amphibole F = Single Fiber Amosite 3 = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified NSC = No Structures Detected

CITY_21MC100_01 1276918

NYC-WTC_000202593