NYC-WTC_000218369

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1920 Lab Group #: 6999 Filter Tvpe / Filter .Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 06 ■4rea Examined: 0.04496 mm^

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: ROMAN PEYSAKIIOV

GO. Structure Structure Type Length ID of Structure N or n EDS ‘ (Nonadb ' No F B C M >=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements j i

Smjct«>O5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction saltern properties conforming Io <50% undissolved filter, overlapped or folded Totals laboratory idenfificafon criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M i >5c 'J- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F -- Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apa.l Crocidolite Ambiguous C = Cluster (>3 Intersections) . Anthophyllite Non-Asbestos T remolite M = Matrix Actinolite Non-ldentified NSD ’ No Structures Detected

CITY_21MC100_002878320

NYC-WTC_000218369