NYC-WTC_000220763

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7353 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0,04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7'02

zknalysis Performed By: _ MICHA^ GORYCKI

GO, Structure Structure Type Length ID of Structure Nor 7 EDE No (Nooaot; F B C M '=5tJ Chrys Amphibole i Nonasb AiTpigAD Elemeiits! No Coord I <5m

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Struct = > C OU > 5:1 Aspect Ratio H Grid acceptance: -- Positive diffraction pattern properties conforming to ‘50% undissolved filter, overlapped or folded Totals iaooratorv identiiicaton criteria ctiserved <10% particulate coverage >50% coverage ate

V- EDS spectrum conforming to iaooratory least 20 unloided or ovenapped grid squares <5% f holes cr opacue areas F I E! __ I__ r Pm ; .centificaiion c'iter a observeid Chivsotile AMPHIBOLES Amphibole ■4 P = Single Fiber Amosite 3 = Bl,note i<3 fibers <1 fiber ciameter apart Crocidolite rXmbigiious i S - Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matrix I Non -1 de n t i fed ■ Actinolite NSC = No Structures Detec ed

CITY_21MC100_000621686 NYC-WTC_000220763