NYC-WTC_000212866

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1928 Lab Group #; 8086 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #; 02 Area Examined; 0.04496 mm^

GRID BOX: Maenification: 20,000 GRID ID; Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date; 6/13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length 10 of Structure Norv EDS (Nonadb No F B C M >=OSp >=5p Chrys Amphbole Nonasb AmbigyND No Coord <5p Elemenb)

aX -—

Struct = > 0.5p >5:1 Aspect Ratio Grid aoceptance: V = Positive diffraction pattern properties conforming Io <50% undissolved Bier, overiapped or folded Totals laDoratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m \ = EDS spectrum confomiing to laboratory 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 Inlerseciions) Anthophyllite Non-Asbestos Tremolite h' = Matrix Non-ldentified AcUnolite NSD = No Structures Detected

CITY_21MC100_002852476

NYC-WTC_000212866