NYC-WTC_000208274

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1920 Lab Group #: 8828 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 11 Area Lxaniined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/10/02

Analysis Performed By: .MARK PEYSAKHOV

GO. Structure Structui 3 Type Length ID of Structure \ or J No >=05 p Amphibole 1 Nonasb I u Ain t- Ambg/ND INonacb B i C I M '=5p Chrys \o Coord <5p I Elements)

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Struct = ■iIOli -5 1 Aspect Ruiio Grid acoeotance

\= Positive aiffraction paiierr propenes confcrmL g lo <5C‘"o jndissolxea filter cverlapDea cr folded Totals <10% particulate coverage >50% coverage ate iaDorator/ toenoficanon criteria cDsenec leas: 20 unfoiceo or overiacoec grid squares <5^0 F B C' M \'= EDS soecrum conforming ’.o .ccca’ci, holes or opaque areas iSenlificaticn criteria oosenyed Chrvsotile AMPHIBOLES Amphibole F = Single Fiber Amosite 3. = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthopbyllite Non-Asbestos Tremolite M - Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003021301

NYC-WTC_000208274