NYC-WTC_000201309

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNa;ine: NYC BOE Volume (liters): 1920 Lab Group #: 7353 Filter Type / Filter Area: MCE 385 mm- Lab Sample 12 Grid OEening Sizei 0.01124

Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: MTCHARL GORYCKI

GO, Structure Structure i ype Length ID of Structure N or T EDS No (Nonadb ■F B M >=05 |j Chrys Amphibole Nonasb Ambig/ND EisiTients) No Coord .<5m

nsz 1/4 3 £7 rr

^3

Struct = > 0.5)4 >5:1 Aspect Ratio Grid acceptance: 0= Positive diffrsciion pattern properties ocnforming to <50% uncissolved filter, overlapped O' folded Totals laboratory ideniifcation criteria observed <10% particuate coverage >50% coverage ate least 20 unfolded cr overlapped grid squares <5% F B C M >5u \'= EDS spectrum co.tforming to laboratory holes or opacus areas identification criteria obseived Chrvsotile : AMPHIBOLES . Amphibole ■ F = Single Fiber Amosite E = Bundis (<3 fibers ' fiber diarnetei apart Crocidolite Ambiguous' C = Cluster (>3 Intersections) ■ ; Anthophyllite ; Non-Asbestos : Tremolite i M = Matrix Non-Identified Actinolite ' PSD = No Structures Detected

CITY_21MC1OO_O112'7 56O9

NYC-WTC_000201320