NYC-WTC_000207425

NYC 9/11 Public Portal Document

TEM Asbestos (airl Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 8051 . .' Filter Type / Filter Area: .MCE 385 mm-- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 8 . Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/11/02

Analysis Performed By: ' MARX PEYSAKHOV

GO. Structure ■ - Structure Type Length ID of Structure N or •/ ' EDS, ■ No >=05 M r~:>=5)J (Nonadb . F B C M Chrys Amphibole Nonasb Ambig/ND '. No [ Coord <5|J Elements)

Struct = > 0 5(1 > 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to "50% undissolved filter, overlapped or folded Totals ................... laboratory criteria observed• ■' .................... identification <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p ! ■ EDS spectrum confornting 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 Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003015177

NYC-WTC_000207425