TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE yolunieJJitei^ 1800 Lab Group #: 6897 Filter Type / Filter Area: .MCE 385 mnr Lab Sample #: 4 Grid Opening Size: 0.01 124

Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/2/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor v EDS (Nonadb No F B ! C M ■=05u '=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

IS / ^:^i 1------- -------- rb-z-, ' ——t 6t

Struct = > O.bp >5:1 Aspect Ratio Gnd acceptance:

v = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% I F B C M >5tJ \ = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous : C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified USD < No Structures Detected

CITY_21MC100_003102216

NYC-WTC_000183173