NYC-WTC_000201803

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6974 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 4 Grid Opening Size: 0.G1124 Client Sample #: 04 Area Examined: 0.04496 mm^ GRID BOX: - I Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/7/02 i

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS . No (Nonadb F B C >=05 u A >=5p Chrys Amphibole Nonasb Ambig/ND No Cool’d <5p Elements)

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: 9= Positive diffraction pattern properties conforming Io <50% undissolved filter, overlaoped or folded Totals laboratory identification criteria observed <'0% particulate coverage >50% coverage ate least 20 unfolded or overiapoed grid squares <5% F I B C M >5u ■ 7= EDS spectrum conforming to laboratory holes or opaque areas identificatiort criteria observed Ctaysotile AMPHIBOLES Amphibole F - Shcle Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster f>3 intersections) Anthop.hyllite Non-Asbestos Tremolite M = f/atriz . : : ? Non-Identified Actinolite NSD = Nc Structures Detected

CITY_21MC100_003269140

NYC-WTC_000201803