NYC-WTC_000189070

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N7'C BOE Volume (liters): 1928 Lab Group #: 5940 Filter Type / Filter Area: MCE 385 Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm^ Magnification: GRID BOX: GRIDED: 7364/ Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 11/21/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS Nonasb (Nonadb No F B C M >=05 M Chrys Amphibole Ambig/ND No Coord Elements) <5p 74 / PHI /WJ /y'

J h Y it

7/1/ i

____)______ I Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming io <50% undissolved filter, overlapped or folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ate

"/= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B p: M >5U

identification criteria obsen/ed Chrysotile i AMPHIBOLES J Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart ; Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ; Tremolite M = Matrix Non-Identifled Actinolite NSD = No Structures Detected

CITY_21MC100_003083406

NYC-WTC_000189070