NYC-WTC_000217983

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume llitei s): 1920 Lah Group #: 674'' Filter Type Filter Area: .MCE ; mm; Lab Sample #: 9 Grid Opening Size: 0.01124 I

Client Sample #: 09 Area Examined: 0,04476 mt-

GRID BOX: Magnification: 20,000 GRID ID: ■-•3 X Accelerating Voltage: iOO Ke\' H Grid Openings: 4 Analysis Date: 2/20'02

Analysis Performed By: mark peysakhov

GO. Structure Structure Type Length ID of Structure N or V EDS No (Nonsdb F B C M >=05 p i>=5(j Chrys Amohibole Nonasb ) Ambig/ND No Coord <5p Elements)

/ -s3 -3 X --X A- x - tg

Struct = > 0.5(2 > 5:1 Aspect Ratio Gnd acceptance: 7= Positive diftraclion pattern properties conforming to <50% undissolved lilter, overtapped or folded Totals lattoratory identification criteria observed <10% partcuiate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B ; C i M ; EDS spectrum conforming to laboratory boles or opaque areas identification critena observed Chrysotile ''amphiboles" .Amphibole j F = Single Fiber Amosite B = Bundle (<3 libers <1 liber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos : Tremolite M = Matrix Actinolite j Non-identified : NSD = No Structures Detected

CITY_21MC100_002878182

NYC-WTC_000217983