TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

XE31 Asbestos (air) Count Sheet Client ?Same: NYC BOE Volume (liters): 1936 Lab Group #: 6078 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 8 Area Examined: 0.04496 mm" GRID BOX: GRID ID: to Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 12/11/01 Analysis Performed By: _______ /2Zy___

ROMAN PEYSAKHOV

GO. i Structure 1 Structure Type | Length ID of structure Nor T (Nonadb EDS “ No “f b I 'C 1 M I >=05 p ■=5m Chrys | Amphibole Nonasb Ambig/ND Nc Coord <5p Elements)

//___ //

/r-

Struct = > C,/u >5:1 Aspect Ratio Gnd acceptance: Y Pcsitive diffraction pattern properties conforming to <50% undiasolved filter, overlapped or tolded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded orovenapped grd sauares <5% F ! B C M EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile : AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle l<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster !>3 Intersections) Anthophyllite Non-Asbes'tos ; T remolite M = Matrix Non-Identified i Actinolite NSC = No Structures Delected

CITY_21MC100_003104670

NYC-WTC_000184127