NYC-WTC_000201862

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme (liters): 1840 Lab Group #: 6550 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: 2/3/02

Analysis Performed By: ROMAN PEYSAKHOV

Structure Structure Type ID of Structure Nor V EDS GO, Length (Nonadb No F B C M >=c5p ; ■=5p Ohrys .Amphiboie Nonasb Ambig/ND No Coord <5p Elements;

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Struct -> O.Spi -> 5:1 Aspect Ratio Grid acceptance: -/= Positive diffraction pattern properties conforminc to <50% undissolved filter, overlapped or folded Totals lacoratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 2= EDSspeofrum conforming to laboratory holes nr opaque areas identification criteria observed Clirysotile AMPHIBOLES I Amphibole F = Single Fioer Amosite B = Bundle (<3 fibers <1 finer diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections; Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSC = No Structures Detected

CITY_21MC100_003269326

NYC-WTC_000201862