NYC-WTC_000222524

NYC 9/11 Public Portal Document

TEMAsbestosfairlCountShe^ Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7492 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 GRID BOX: Magnification: 20 000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Notiadb F B C M >=05 M :>=5p Cbrys Amphibole Nonasb Ambig/ND No: Coord <5p Elements)

Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties confomning to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5p 9= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES j Amphibole F = Single Fiber Amosite ; B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite : M = Matrix Non-Identified Acbnolite NSD = No Structures Detected

CITY_21MC100_002918149

NYC-WTC_000222524