NYC-WTC_000228809

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7664 Filter Type / Filter Area: MCE 385 Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496

GRID BOX: Magnification: 20 000 GBIDJEi Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date; 5/7/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor EDS No (Nonadh F 6 C M «05p Ctirys AmptiXwte NonasO Afn6)g/ND No Coord <5p ESemente)

z.

I

Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: Positive diffraefion pattern properties contemning to <50% undissoheel filter, overtapped or fotdeti Totals lalxiratoty identifeabon criteria observed <10% pafficuSale coverage >50% coverage ate least 20 unfofded^or overtappad grid squares <5% F 0 C M >5u EOS specdum conforming to laboratory holes or opaque are© identification errterfa observed Chjysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibera <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrx Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC100_002901724

NYC-WTC_000228809