TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client xName: NYC BOE Volume (liters): 1816 Lab-£hl0!itL^ 6943 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 18 AreaEAamined: 0.04496 mm-

GRID BO2C Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No (Nonadb ) F B C M >=05p =5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) --------- 1 e iz~x ■3 4— J

1-----

Struct = > ().5|j >5:1 .Aspect Ratio Grid acceolance

v'= Positive diffraction pattern properties conforming to <50% jndissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50%o coverage ate least 20 unfolded or overlapped grid squares <5% ’ F I B ! C i M i >5p /= EDS spectrum conforming to laboratcry holes or opaque areas identification criteria observed Chrysotile ) 1 i ) AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle l<3 fibers <1 fiber diameter apart Ambiguous Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003102315

NYC-WTC_000183237