NYC-WTC_000199436

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Yame: NYC BOE X'olume (liters): 1920 Lah Group 8760 Fliter Type / Filter Area: .MCE 385 mm' Lab Sample #: 15 Grid Opening Size: 0.0112- C lient Sample #: 15 Area Examined: 0.04446 nm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8'25/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C >=05 u Chrys Amphibole Nonasc Ambig/ND No Coord <5u Eiements)

---- L._ JI I - g

I 1 1

.'X

T J

Struct = > O.ip > 5:1 Aspect Ratio Snd acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed

V= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas ___ ZTZ B Chjysottle C j M >5p denfification criteria observed I I AMPHIBOLES Amphibole P = Single t^iber Amosite B : Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C =Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified ■ Actinolite NSD = No Struclures Detected

CITY_21MC100_003033961

NYC-WTC_000199436