NYC-WTC_000227765

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6584 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0,01124

Client Sample #: 5 Area Examined: 0.04496 mm-

GRID BOX; Magnification: 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/7/02

Analysis Performed By: jvV ROMAN PEYSAKHOV

GO^ Structure Structure Type Length ID of Structure N or 7 EDS No (Nonadb F B C M >=05 y :>=5|j Chrys Amphibole Nonasb Ambig/ND _ No Coord <5m Elements)

u__ 11___ ---------------

Struct “ > 0.5)1 >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved fitter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M i >5p V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_0 02899263

NYC-WTC_000227765