TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6832 Filter Type / Filter Area: MCE 3S5 mm- Lab Sample #: 1 Grid Opening Size: 0.01124 . Client Sample #: 01 Area Examined: 0.04496, mni- GRID BOX: AAA- Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/26/02

Analysis Performed By: ROMANPEYSAKHOV

GO, Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F' B C M >=05 p >=5p Chrys Amphibole Nonasb AmbigrND No Coord <5|J Elements)

// . NT 7O?j ’ S5S4 ■N

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: ■/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria obsen/ed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u a/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC100_003108286

NYC-WTC_000185669