NYC-WTC_000198842

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count S Client Name: NYC BOE le (liters); 1814.5 Lab Group #: 8243 Filter Type :!er Area; MCE 385 mm^ Lab Sample #; 13 Grid uing Size: 0.01124 Client Sample #: 13 Ar.. \a mined: 0.04496 mm^ GRID BOX: iilcation; 20,000 GRIDID: Acceler: g Voltage: 100 KeV # Grid Openings; 4 vsis Date: 6/23/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure I Structure Type Length r r'.'cfure Norv EDS No (Nonadb F I B I C I rM >=05 M :>=5|J Chrys Amphi: iNonasb Ambig/NO Elements) No Coord <5m /

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: -/= Positive diffraction pattern properties conforming to <50% undissolved filter. overiapped.or folded Totals laboratory Identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed si’ile AMPHIBOLES . de F = Single Fiber Amosite ■ 'US B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Nt -..IOS Tremolite M = Matrix No:. uiied Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO3O3O635

NYC-WTC_000198842