NYC-WTC_000212193

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7449 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size; 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

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

7/ 222

'5

Struct = >0 5u >5:1 Aspect Ratio Grid acceptance: ^= 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 >5p ^= EOS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile I AMPHIBOLES | Amphibole F = Single Fiber i Amosite 0 = Bundle (<3 fibers <1 liber diameter apart Crocidolite i Ambiguous C = Cluster (>3 Intersections) ; Antnophyllite Non-Asbestos i T remolite M = Matrix Non-Identified Actinolite i NSD = No Structures Detected

CITY_21MC100_002866202

NYC-WTC_000212193