NYC-WTC_000230036

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7162 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 19 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No >-35 p (Nonadb F B C M Ctirys Amphibole Nonasb Ambig/ND No Coord <5(j Elements)

Struc; = > 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 >5u EDS spectrum conforming Io laboratory holes or opaque areas identification criteria observed Chrysotile ! AMPHIBOLES I Amphibole F = Single Fiber ; Amosite j 3 = Bundle (<3 fibers <1 fiber diameter apart ; Crocidolite ! Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite - W = Matrix Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3388645 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230036