NYC-WTC_000228878

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 7723 Filter Type / Filter Area: MCE 385 mm- Lab Sample 6 Grid Opening Size: 0.01! 24 Client Sample #: 08 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Pate: 5/12/02

Analysis Performed By; MARK PEYSAKHOV

GO, Structure Structure Type Length 10 of Structure N or V EDS No (Nonaeb i F B C M M5U Chrys Amphitole Nonasb Ambjg/NO No Coord <5p Elements) ■ I

<7

i

Struct = > O.Sp > 5; I Aspect Ratio Grid acceptmice: i/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or lowed Totals <10% parttcuiate coverage >50% coverage ate labotatoty idantificatlcin criteria observed teastJO unfolded or overlapped grid squares <5% F B C M >5u '/s EDS spectrum conforrnlng to laboratory holes or opaque areas identification critena observed Ctirysotile AMPHIBOLES .. Amphibole F = Single Rbsr Amosite S = Sundla I <3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections} Anthophyllite Non-Asbestos Tremolite M = Matrix Actinoiite Non-Identified NSD - Ho Structures Detected

CITY_21MC100_002901831

NYC-WTC_000228878