NYC-WTC_000218060

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6840 Filter Type / Filter Area: MCE ; mm- I Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0.04496 rtim-

GRID BOX: ■Magnification: 20.000 GRID ED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/27'02

Analysis Performed By MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or \ j EDS -------- No F B C M >=05 p : '=5p Chrys j Amphibole Nonasc i Ambig/ND I No Coord I > Elements)

3- ..--O'

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulale coverage >50.% coverage ate least 20 unfolded or overlapped grid squares <5% f i F 1 B ' C i M EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chry'soiile | AMPHIBOLES Amphibole i F - Single Fiber Amosite B = Bundle fibers <1 fiber diameter a car' Crocidolite Ambiguous i C = Clusier (>3 Intersections) Anthophyllite , Non-Asbestos I Tremolite M = Matrix Actinolite Non-identified ' NSD = No Structures Detected

CITY_2 IMCl 0 0_0 0 Cl 4 6 5 812 NYC-WTC_000218060