NYC-WTC_000188487

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC SCA Volume (liters): 1944 Lab Group #: 5801 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 1 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND i No I Coord <5p Elements)

4^6 lUSz u II HD -

___ ! ' I j r

Struct = > 0.5p A 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 ieast 20 unfolded or overtapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory notes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle '<3 fibers <1 fiber diameter apan Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003081513

NYC-WTC_000188487