NYC-WTC_000229769

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 8147 Filter Type / Filter Area: MCE 385 inm^ Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20 000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By: /v' ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure Norv EDS No (Nonadb F B C M >=05 M :>=51J Chrys Amphibole Nonasb Ambig/ND No Coord Elements)

/r <5p

/IS /? ^1 «

Struct = > 0.5p .>5:1 Aspect Ratio Grid acceptance: 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 <S% F B C M >5|j EDS spectrum conlorming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLE^ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix T remolite ' Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3387898 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000229769