NYC-WTC_000228197

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1880 Lab Group #: 7186 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #; 01 Area Examined: 0.04496 GRID BOX: Magnification: 20 000 GRIDro: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 3/24/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Lengtii ID of Sttucture N or 'I EDS (Nonadb No F B C M >»05p Chrys Amphibole Nonasb Ambig/ND No Coord _ <5y Elemente)

3^ ./ itrg I 3^^

Struct = > 0.5p > 5:1 Aspect Ratio Grib acceptance: Positive diffraction pattern properties conforming to undissolyed fitter, overap^ 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 ! >5u EDS spectrum conforming to laboratory boles or opaque areas identification criteria observed Chrysotile AMPHIBOLES i Amphibole F’Smgte Fiber Atnosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M « Matrix , Actinolite Non-Identified NSD - No Structures Detected ___ 1

CITY_21MC100_006617823 NYC-WTC_000228197