NYC-WTC_000201062

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1805 Lab Group #: 7832 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #; 12 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID TD: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/22/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure N "or 7 EDS (Nonabb No F 3 C M >=05 u >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

/>- 3 2/222 If

./S q if

Struct = > 0i5|i > .5“l Aspect Ratio Grid accsptarce: 7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlappec or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate •least 20 unfolded or overlapped grid squares <5% f F B C M >5u 7= EDS spectruin conforming 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 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Ideiitified NSD = Na Structures Detected

CITY_21MC1OO_O11275368

NYC-WTC_000201073