NYC-WTC_000228863

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1800 Lab Group #: 7717 Filter Type / Filter Area: MCE 385 Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 17 Area Examined: 0.04496 mm- GRID BOX: Magnificalion: 20,000 GRIDID: -7^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/11/02 Analysis Performed By: f

ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or v EDS i

s No (Nonadb ; F B C M >=05 p >=5p Chrys Amphibole Nonasb AftibigiND NoI _ Coord <5p Elenients) j

TP z ■

1I

t I

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance, 7= Positive diffraction pattern properties conforming to <50% undissolved fitter, overlapped or foMed Totals laborator/ identification criteria observed <10% particulate coverage >50% coverage ata least 20 unfolded or overlapped grid squares <5% F B C M >5p V= EDS spectrum contomning to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Ampiiibole F i Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anttiophylfite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldcntified NSC - No SCuctures Detected

CITY_21MC100_002901815

NYC-WTC_000228863