NYC-WTC_000204147

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet (Zlient Name: NYC BOE Volume (liters): 1816 Lab Group #: 7294 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/1/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor n EDS (Nonadb No F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND Elements) .J No Coord <5m 2^ //

X'-—-

______ ______ uJI____ i ~ Struct = > 0.bp >5:1 Aspect Ratio Grid acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laborator/ identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 9= EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = 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

CITY_21MC1OO_OO3O59885

NYC-WTC_000204147