NYC-WTC_000217832

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Mame: NYC BOE Volume (liters): 1920 Lab Group #: 6582 Filter Type / Filter Area: MCE 385 Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: ■yiTFvf Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2,'7,^02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length iD of Structure N or v EDS ' (Nonadb I No F B C M >=05 p i>=5iJ Chrys Amphiboie Nonasb AmbigZNO No Coord <5u Eleme.nts! i ■i----------------- 1

u 7 II

I

Struct = > 0.5fi _> 5.! Aspect Ratio Grid acceptance; 'J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F •/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile "amphiboles Amphiboie F = Single Fiber Amosite Crocidolite Ambiguous i B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix Actinolite Non-ldentificd | J NSD = No Structures Detected

CITY_21MC1OO_OO287791O

NYC-WTC_000217832