NYC-WTC_000229029

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYCBOE Volume (liters'): 1808 Lab Group #: 7835 Filter Type / Filter Area: MCE 385 Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20 000 GRIDro: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type length IO of structure N or V EDS iNoradb No Coord No F a c M >=0Sij >=5)J Cfirys Amphibole Monasb Ambis/ND Elemental

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' Struct = >0.5p >5:1 Aspect Ratio Grid acceptance; v'= PosKlw diffraction pattern properties conforminc to <50% undissplved fitter, overt^M or toWed Totals laborator,' Identiflcatioii criteria observed <10% particutatB coverage >50% coverage ate teas! 20 unfolded w oyenapped grid squares <5% F B C M ?6u EDS spectrurr conforming to laboratory holes or opaque areas (dentifcafan crtterta otiseived Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite E = Sundte (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster Intersections) Antboptiyllite Non-Asbestos Tremolite M = Matra Actinolite Non-Identified USD = No Structures Detected

CITY_21MC1OO_OO29O2O73

NYC-WTC_000229029