TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client .Name: N^'C BOE Volume (liters): 1816 Lab Group #: 6780 Filter Type Filter Area: MCE 3 85 mm- Lab Sample #: 14 Grid Opening Size: 0.0! 124 Client Sample #: 17 x4rea Examined: 0.04496 min- GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 4 EDS I (Nonedb | ■ No F B C M >=05 u Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements) '

j— -1— I I -CJ-

) Struct = > 0.5g >5:! .Aspect Ratio Grid acceptance: ’/= Positive diffraction pattern progenies 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% i F I B . C i M i >5u v= EDS spectrum conforming to laboratory holes or cpaque areas identification criteria 0036,0/6(1 Chrysotile j ■AMPHIBOLES Amphibole r = Single Fiber Amosite t = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I I I 1 C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios I Tremolite 1 I M = Matrix I Non-Idennnsd Actinolite NSD = No Structures Detected

CITY_21MC100_003103394

NYC-WTC_000183850