NYC-WTC_000229186

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7968 Filter Type / Filter Area: MCE 385 Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20 000 GRID ID, Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 6/5/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length 10 Of Structure Nor V No [Nonadb F 8 C M >=5p Chrys Amphibole Nonasta No Coord <5)J Elements}

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Struct =• > 0.5g > 5; 1 Aspect Ratio Crib acceptance; y = Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory tdentiffcatton crteria observed <10% particuata coverage >50% coverage ate least 20 unfoldect or overlapped gnd squares <5% F B C M EOS spectrum conforming to laboratoy holes or opaoua areas icenttfication crfterta observed Chrysotile rAMFHIBOLES Amphibole F = Single Fiber ! Amosite I 0 ’ Bundla (<3 fibers <1 fiber diameter apart Crocidotlte j Ambiguous C = Cluster (>3 Intersecfais) ' AnthophyWte Non-Asbestos I Tremolite M = Matrix , Actinolite Non-Identified USD = No Structures Detected

CITY_21MC100_002902388

NYC-WTC_000229186