NYC-WTC_000200947

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 7766 Filter Type / Filter Area: MCE 385 Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: IS Area Examined: 0.04496

GRID BOX: Magnification; 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/16/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure j Structure i ype Length. ID of Structure N or 4 EDS (Nonadb ■ No Hf B C M ■=5y Chrys Amphibole Nonasb Ambig/ND No Coord Elements) <5pr

iT t:'-

a

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:

Positive diffraction partem properties conforming Io <5O% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particuiate 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 AMPHIBOLES Amphibole 7 F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidrtlite Ainbiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M-= Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_011275302

NYC-WTC_000200961