NYC-WTC_000213177

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6427 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: 100 KeV # Grid Openings: 4 Analysis Date: _ 1/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No >=05 M (Nonadb F B C M >=5(J Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

/£ 7 If 7 >i VZ- it

2^

I 1 I ' ■ ~~n Struct = > 0-5p 5:1 Aspect Ratio Grid acceptance: >1- Positive diffraction pattern properties conforming'to "50% undissolved filter, overlapped 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 EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHTBOL^'' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite ' Non-Asbestos Tremolite i M = Matrix Actinolite j . Non-Identified NSD = No Structures Detected

CITY_21MC100_000461841 NYC-WTC_000213177