NYC-WTC_000223982

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1920 Lab Group #: 7293 Filter Type / Filter Area: MCE 385 Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 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 Pertormed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or' V EDS No >=05"^ :>=5|j (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

y__ 0 (f

6^

Struct = >0 5)j >5:1 Aspect Ratio Grid acceptance: v/= Posidve diffraction pattern properties conforming to "50% undissolved filter, ovedapped 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 >5m y= EDS spectrum conforming to laboratory holes or opaque areas identification cnteria observed Chrysotile amphiboles' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite iS Ambiguous C = Cluster (>3 Intersections) Anthophyllite | Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO28925O3

NYC-WTC_000223982