NYC-WTC_000201837

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1952 Lab Group #: 6911 Filter Type / Filter Area: MCE 385 Lab Sample #: 14 '■ GridOhueninoM^ Client Sample #: 14 Area Exarhined: 0.04496 mm’ GRID BOX: Magnification: 20,000; GRID ID: : Accelerating Voltage: lOOKeV # Grid Openings: 4 » Analysis Date: 3/4/02

Analysis Performed By: MARK PEYSAKHQV

go; ;; Structure structure Type Length iDDfStructure TiorY EDS ; ; i No ) ,(Nonadb . F C M >=06 p ' >=5M: Chrys Amphibole Nonasb Ambig/ND No Coord Elements) i -

Sti'uct = > 0.5(1 > 5:1 Aspect Ratio 'Gridacceptance 9= Positive diffraction pattern properties conforming to 1 ^50% undissolved filter, overlapped or folded 1 Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ,j >5.(j ■ ^/'= EDS spectrum tronforming to laboratory holes or opaque areas; identification criteria observed Chrysotile amphiboles Amphibole ;'F = Single Fiber ; Amosite, B = Bundte (<3 fibers <1 fiber.diameter apart Crocidolite Ambiguous C = Cluster t>3 Intersections) Anthophyllite Non-Asbestos Tremolite W = Matrix < Non-ldentified Actinolite ' NSD = Nd Structures Detected

CITY_21MC100_003269236

NYC-WTC_000201837