NYC-WTC_000230146

NYC 9/11 Public Portal Document

TEM Asbestos (airl Count Sheet Client Name: NYC BOE Volume filters’): 1952 Lab Group #: 6464 Filter Type / Filter Area: MCE 385 Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 9 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: SY7 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 1/27/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure T ype Length ID of Structure N or N EDS No (Nonadb F ■B C M >=5p Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5u 7

6'/

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 <5% F B C M ’5p rl=‘EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chry'sotile AMPHIBOLES Amphibole P = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I remolite M = Matrix Actinolite ■Non-ldentified NSD = No Structures Detecled

CONFIDENTIAL, CITY_21MC1OO_OO33888O5 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230146