NYC-WTC_000201928

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1840 Lab Group #: 6734 Filter Type / Filter Area: MOTE 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: 2/19/02

Analysis Performed By: . MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N o- t EDS (NonadO No F B- C M ■=05p >=54 - Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

<- -73 C.-X-3

■".I

Struct = >0.5p > 5:1 Aspect Ratio Brid acceptance:

V- Positive diffraction pattern properties conforniing to <50% iindissoivec filter overlapped or fclded Torah <10% particulate coverage >50% coverage ate labo-atory identification criteria observed least 20 unfolded,or overlapped grid squares <5% F B e M >5p /- EDS spectrum conforniing to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diamster apart Crocidolite Ambiguous - Anthophyllite Noil-Asbestos C = Cluster (>3 iiitersecticnsi Tremolite • V = Matrix Actinolite Noil-Identified NSD = No Structures Detected

CITY_21MC100_003269671

NYC-WTC_000201928