NYC-WTC_000229148

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1912 Lab Group #: 7922 Filter Type / Filter Area: MCE 385 mnr^ Lab Sample #; 4 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm* GRID BOX; Magnification: 20,000 GRID ID; 3^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Dale: 6/1/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length lOofStroetetre N or 4 EDS No (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/NO Elements) No Coord <5p

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Struct = > 0.5(1 5:1 Aspect Ratio Grid acceptance: 4= Fosithe citiraGton pattern properties conforming to <50% undisBOtved Alter, overlapped a folded Totals labotaioiy identification criteria observed <10% parAciiate coverage >50% coverage ate least 20 unfolded or overlappad grid squares <5% F B C M >5u 4= EOS spectrum conforming to latxxatory holes or opague areas iOentIflcatlon criteria obsenred Chrysotile ! AMPHIBOLES ] Amphibole F = Single Fiber Amosite B = Bundle {<3 Abers <1 f ber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002902285

NYC-WTC_000229148