NYC-WTC_000202049

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1800 Lab Group #: 7119 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: ■13 Grid Opening Size: 0.01124 Client Sample #: 13 2'2 2 Area Examined: 0.04496 mm-. GRID BOX: ;WZ_ Magnification: 20 000 GRID ID : £3^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/18/02

Analysis Performed By: ; ROMAN PEYSAKHOV

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

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_________ 4-

Struct = > 0.5|j > 5:1 Aspect Ratio ; Grib acceptance; ■ Positive diffraction pattern properties conforming to 1 "50% undissolved filter, overtyped or folded Totals laboratoiy identification criteria observed <10% particulate coverage >50% coverage ate

•/= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B I C M >5p holes or opaque areasl identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber 2 : i Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections): Anthophyllite Non-Asbestos , Tremolite 2 M = Matrix j 2 Actinolife i Non-Identified NSC = No Structures Detected 2 1:2

CITY_21MC100_003269964

NYC-WTC_000202049