NYC-WTC_000199379

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Naiiie: NYC ROE Volume (liters): 1936 Lab Group 8745 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Ope ting Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm-

GRID BOX: M^dfication: 20,000 GRID ID: Acceleratin;' Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/24/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure i Structure Type Length ID of S;r icture N or \ EDS No Chrvs ■ Amphibole Nonasb Ambig/ND (Nonadb F : B I C : M I >=05 pj =5m No Coord i ' ' I I Elements' j----- ----- :----- ----- d

J___ ' -7 J T- ^-Yl

H

Struct == > l).5u > 5:1 A.spect Ratio Gnd acceptance:

= Positive diffraction pattern properties conforming to <50% undissolved filter, overlappea or folded Totals lanoratcry identification criteria oosenved <10% particulate coverage >50% coverage ate least 20 unfolded or ovenapped grid squares <5% f rF ! B i C M >■ EDS spectrum ccnforming to laooratory doles or opaoue areas identification criteria ooserted Chrvsotile i AMPHIBOLES .AmohiDole : - = single Fiber Amosite 3 = Bundle ;<3 fibers <1 'iber diameter apart Crocidolite .Ambig ions I C = Cluster (>3 intersections) Anthophyllite Non-Asbustos Tremolite M = Matrix Non-Identified Actinolite .NSD = No Structures Detected

CITY_21MC100_003033685

NYC-WTC_000199379