NYC-WTC_000212901

NYC 9/11 Public Portal Document

TEM Asbestos (air).Count Sheet Client Name: NiYC BOE Volume (liters): 1928 Lab Group #: 8152 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 p ■ >=5o ■- Chrys Amphibole Nonasb Ambig/ND /s No Coord <5p Elements)

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties oonfomiing to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria otiserved <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m '1- EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile -A.MPHIBOLFs' Amphibole F = Single Fiber Amosite- ! 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidoli'fe: ’ Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite. V = Matrix Non-Identified Actinolite NSD = No Structures Detectec

CITY_21MC100_002852561

NYC-WTC_000212901