NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3800 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor v EDS No (Nonadb F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

A

7 il/2. /-< 2

zz

//

/Tasz’ /Z A X

V A

Photo No. (from 1 in 5 asbestos containing samp, Gnd acceptance; Struct = > 0.5u .> 5:1 Aspect Ratio <50% undissolved filter, overlapped or *olded Totals N = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C I M >5iJ holes or opaque areas V = EDS soectrum conforming to laboratory Chrysotile identificabon criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSC = No Structures Detected

CITY_21MC100_003069444

NYC-WTC_000202900