NYC-WTC_000212585

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 7S27 ‘ Filter Type / Filter Area: MCE 385 n:nr l ab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 rnm-^

GRIP BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Ty pe Length ID of Structure N or y EDS 1 No (Nonadb : F B C >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) !

Struct “ > j 5u > 5:1 Aspeot Ratio Grid acceptance: ■/ = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification cntena ob!->e(ved <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m . EOS spectrum conforming to laboratory holes or opaque areas idrntiticaiion cntena observed Chrysotile AMPHIBOLES Amphibole F : Single Fiber Amosite 0 = Bundle i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrx Non-Identified Actinolite NEC = No Structures Detected

CITY_21MC1OO_OO2867288

NYC-WTC_000212585