NYC-WTC_000223736

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7491 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0,04496 mm'

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/2 L02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor v ' EDS No , —I (Nonacb F B C M >=05 M >=5(J Chrys Ampfiibole Nonasb Anbig/ND i No Coord <5u I dements)

---------- J YTz"

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance, Positive diffraction pattern properties conforniing to <60% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or ovenapped grid squares <5% F ; B : C , M EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ■AMPHIBOLES Amphibole F = Single Fiber Amosite 6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ' .Ambiguous C = Cluster i>3 intersections) Anthophyllite ! Non-.Asbestos ! T remolite M = Malnx Actinolite Non-Identified ) NSD = No Structures Detected

CITY_21MC100_002919839

NYC-WTC_000223736