NYC-WTC_000229873

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group 7847 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: MARK PEYSAKHOV

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

go

J Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <0% undtssolved filter, overiapped or folded Tot^ laboratory identification criteria observed t_..w <10% particulale coverage >50% coverage ate

'/= EOS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B C M >5p holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Antfiophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSC = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388424 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000229873