NYC-WTC_000224886

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 ♦ Lab Group #: 7436 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: (S' Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/16/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5|j Elements)

____ Z- —c <3 <0/" -—r, 7=:

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: V= 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 B C M v= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile , AMPHIBOLES ~ Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002894785

NYC-WTC_000224886