NYC-WTC_000230192

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 6516 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID : a Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/31/02

Analysis Performed By: MARK PEYSAKHOV'

GO. Structure Structure Type Length ID of Structure ' N or V EDS No >=05 p (Nonadb F B C >=5p Chrys Amphibole Nonasb AmbigfND No Coord <5m Elements) 4 4^:^

Struct = > 0 5 (1 .> 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 >5y '/= EDS spectrum conforming to laboratory holes or opaque areas ■ identification criteria observed Chrysotile '"amphiboles j Amphibole F = Single Fiber Amosite ! B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ' Ambiguous C = Cluster (>3 Intersections) . Anthophyllite 1 Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO33889O1 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230192