NYC-WTC_000190079

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1824 Lab Group #: 6780 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0 01124

Client Sample #. 04 Area Examined: 0 04496 miTi-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage. too KeV # Grid Openings: 4 Analysis Date: 2/22/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or N ■ EDS ! , . —i (Nonadb No Coord No F B c M >=05 |J <5|J >=5iJ Chrys Amphibole Nonasb

------ !-------- 1

Struct = > 0 5 (J >5 1 Aspect Ratio Grid acceptance t/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

^= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B C M >5u 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 (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003088576

NYC-WTC_000190079