TEM asbestos air count sheet, PS 89M, Jan 18 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters/: 1944 Lab Group #: 6363 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Struciure Nor C EDS No (Nonadb F B C M >=0£u , Chrys Amphibole Nonasb Ambig/ND No Coord Elements)

(/ _JL__ n

Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern p'-operties conforming to <50% undissolved filtei, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfoldeo or ovahapped grid squares <5% F B C >5p /= EDS spectrum conforming to laboratory holes or opaque areas Identification criteria ooserved Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anlboptiyilite Non-Asbestos Tremolite M = Matrix Non-Iden titled Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660154

NYC-WTC_000174751