NYC-WTC_000230402

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NV’C BOE Volume (liters): 1944 Lab Group #: 7216 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 9 Area Examined: 0.04496 mm^ GREP BOX: Magnification: 20,000 GREP ED: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/26/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or x/ EDS No (Nonadb F B C M >=05 p Chrys Amphibole ■ Nonasb Ambig/NO No Coord <5p Elements)

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

^1= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B c M >5u identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber i Amosite 3, = Bundle (<3 fibers <1 fiber diameter apart ) Crocidolite Ambiguous C = Cluster (>3 Intersections) ; Anthophyllite Non-Asbestos T remolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_002723182 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230402