NYC-WTC_000228752

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7625 Filter Type / Filter Area: MCE 385 Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #; 15 Area Examined: 0.04496 iiirrr

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Sbucture NorV EDS No >=05 y Amphiboie Nonasb An*ig/ND (NonadS F B C M >=5(j Chrys Elements) No Coord <5p

35- crx?

Struct = > 0.5p. -> 5: i Aspect Ratio Grid acceptance: Positve diffraction pattern properties conforming to <50% urtiisaotved Wtsr, ovenapped or soWed Totals laDoratoiy identifKation criteria observed <10% particulate coverage >50% coverage ale least 20 antelded or overtapped grid squares <5% F B C M >5tJ 7= EDS spectrum conforming to iaboratory holes Of opaque areas identification 'Criteria observed Chrysotile ' AMPHIBOLES Amphibole F ’ Single Fiber Amosite a = Bundle {<3 fibers <1 fiber diameter apart ' Crocidolite Ambiguous C = Cluster {>3 Intersections) Afiihopdyliite Non-Asbestos Tremolite M = Wabix Actinolite Non-ldentified HSD = No Sltuclures Delected

CITY_21MC100_002901622

NYC-WTC_000228752