NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mnf Lab Sample #: 20 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.24728 mm- GRID BOX: Magnification: 20,000 GRID ID: •77 Accelerating Voltage: too KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=05 u >=5|j Chrys Amphibole Monasb Ambig/NO No Coord <5p Elements)

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5^ Hhotc No. ifrom 1 in 5 asbestos containing samoies) Gnd acceptance: Struct = > O.Sli > 5:1 Aspect Ratio , <50% undissolved filter, overlapped or raided Totals Positive diffraction pattem properties conforming to <10% particulate coverage >50% coverage ate laboratory iaentification criteria observed least 20 unfolded or overlapped grid squares <5% ! F i B C I M >5p holes or opaque areas 9= EDS spectrum conforming :o laboratory identification criteria observed Chrysotile | AMPHIBOLES Amphibole j c = Single .=iber Amosite 5 = Sundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster i>3 intersections! Anthophyllite i \on-Asbestos Tremolite M = Mainx Actinolite I Non-Identified NSD = No Structures Detected I_____________________ .1

CITY_21MC100_003069331

NYC-WTC_000202866