TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NX'C BOE Volume I liters I: ISOS Lab Group #: 6660 Filter Tvpe / Filter Area: MCE 3S5 mm- Lab Sample 12 Grid Opening Size: 0,01124

Client Sample #: 15 Area Examined: 0.04496 rnm- GRID BOX: GRID ID: i2X - Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 2/13/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No >=Q5 M (Nonadb F B C M , >=5fj Chrys Amphibole Nonasb AmbiglND No Coord <5u Elements)

Q-

4/

Struct = > 0.5,u > 5:1 Aspect Ratio Grid acceptance: 'J- Positive diffraction pattern properties conforming to <50% undissolveo filter, overtapped or folded Totals laporator^' identification criteria observed <10% particulate coverage >50% coverage ate

7= EDS spectrum conforming to laboratory least 20 unfolded or ovenaccec grid squares <5% holes or opaque areas ______ p B ! C i M I >ou identification criteria observed Chrysotile I ■AMPHIBOLES Amphibole : F = Single Fiber Amosite S = Bundle {<3 fibers <' fiber diameter apan Crocidolite Ambiguous * C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ) M = Matrix Tremolite Actinolite Non-Identmed I NSD = No Structures Detected

CITY_21MC100_003103177

NYC-WTC_000183769