NYC-WTC_000223417

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1856 Lab Group g: 6462 FntetLTy]?e7^1Iter Areaj MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV ■ # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure ' Structure Type Length. ID of Structure iToT”? EDS No >=05 p (Nonadb F B C M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord ■=5p Elements)

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Struct = > 0.5p -> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <5°% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate ■ least 20 unfolded or overlapped grid squares <5% F B C M >/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remotite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO289O615

NYC-WTC_000223417