NYC-WTC_000212529

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet i ( lient Name: NYC BOE Volume (liters): 1920 I ab Group #: 7632 Filter Type / Filter Area: MCE 385 mm* 1 ab Sample #: 10 Grid Opening Size: 0.01124 ('lient Sample #: 10 Area Examined: 0.04496 mm=

GRID BOX: Magnification: 20,000 (;RID ID: 3^ Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure structure Type Length IDofStnjcture N or v P EDS -i (Nonadb No

s¥ F B C M >=05 p >=5p Chrys Amphibote Nonasb Amoig/'ND 90 Coord <5p Elements)

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Struct = > 0,5p > 5:1 Aspect Ratio Grid acceptance: ; = Positive diffraction pattern pre perties conforming to <50% jndissolved 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 i C i M 1 = EDS spectrum conforming to laboratory holes or opaque areas ---------- 1------!------ Identification criteria observed Chrysotile ________ iI . _ AMPHIBOLES Amphibole F = Single Fiber Amosite fi = Bundle i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anttioptiyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite rtSD = No Structures Detectec

CITY_21MC100_002866953

NYC-WTC_000212529