NYC-WTC_000201595

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Glient Name: NYC BOE Volume (liters): 1840 Lab Group #: 7521 Filter Type / Filter Area: MCE 385'mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Glient Sample #: 10 Area Examined: 0.04496 mm^

GRID BOX: X- Magnification: 20,000 ■ GRID ID: Accelerating Voltage: 100 KeV #^lrWj0penings2 4 Analysis Date: 4/24/02

Analysis Performed By: ROMAN PEYSAKHOV

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

3® D y /Tjo U

Struct = > 0.5p > 5.-1 Aspect Ratio Grid acceptance: 'A Positive diffraction pattern properties conforming to <50%' undissolved filter, overlapped or foldec Totals laborator/ identificatiori criteria observed <10% particulate coverage >50% coverage ate

V= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B e M >5(j

identification criteria observed Clftysotile AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber oiameter apart Crocidolite Ambiguous- C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite ■ M = Matrix NSD = No Structures Detected Actinolite 1 Non-Identified 1

NYC-WTC_000201604