NYC-WTC_000208266

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client ^’ame: NYC BOE Volume (liters): 1 S'20 Lab Group #: 8828 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm- GRID BOX: Maonitlcation: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/10/02

Analysis Performed By: MARK PEYSAK.HOV

•• GO, I Structure StructL, 'e Type Length ID of Structure \ or \ j EDS No F B C M >=05 pi : =5p Chrys Amphibole Nonasb Ambig.'ND 3 ' - No Coord <5p I Elemenisl

/ )

A? <- < K

Struct = - I) 5u > 54 .Aspect Ratio Grid acceptance

Positive diffraction panern propedies conlormn g io <50'’'o undissoived filter, overlapped or folaed Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 untoiaea or overlappec grid squares <5% 1 F I B ! C i VG >5? EDS spectrum conforming to laooraton/ holes or opaque a-eas i icentification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matrix i Non-Identified Actinolite NS0 = No Structures Detected

CITY_21MC100_003021274

NYC-WTC_000208266