NYC-WTC_000193297

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NV’C BOE Volume (liters): 1832 Lab Group #: 8137 Filter Type / Filter Area: MCE 385 mm* LabSarnpJe^ 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: 6/17/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor\ EDS (Nonadb No F B C >=05 p >=5pi Ch^S Amphibole Nonasb Amblg/ND No Coord <5p Elements)

2ZZZZ

Struct = >0.5p >5:1 Aspect :<atio Grid acceptance: •J-- Positive diffraction pattern properties ccnforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C ] M >5p '1-- EDS spectrum conforming to laborator/ holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F : Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix - Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_003094449

NYC-WTC_000193297