NYC-WTC_000202261

NYC 9/11 Public Portal Document

TOM Asbestos (airV Gount Sheei Client Name: iW 7 Volume (liters): 1840 i :7 Lab Group #: ? 639871 0 Filter Type / Filter Area: MCE 3 S5 mm^ Lab Sample #: 6 Grid Op ening Size: 0.01124

Client Sample #: 06 7 7 Area Examined: 0.04496 7mm^

GRID BOX: Magnification: 20,000 ; GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/22/02 ;

Analysis Performed By: 7 MARK PEYSAKHOV

GO, Structure Structure Type Length I D of Structure N or EDS : No ' (Nonadb F 8 C M >=05 jj I :>=5)J, Ctirys Amphiboie Nonasb Ambig/ND No Coord <5p Elements)

73

'■ 1

Struct = > 0.5 (1 .> 5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties Gonforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or ovetfapped grid squares <5% B C - M >6U EDS spectrum conforming to laboratory 1 holes or opaque areas ' identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle f<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix I Actinolite . Non-Identified NSD = No Structures Detected

CITY_21MC100_011276197

NYC-WTC_000202261