TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: WC BOE Volume /liters): 1S56 Lab Group #: 6600 Filter Type / Filter .Area: MCE 3S5 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 .Analysis Date: 2/8/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No >=05 p (Nonadb F B C M ^=5|j Chrys Amphibole Nonasb Amoig/NO No Coord <5p Elements)

i Struct = > 0.5)1 .> 5:1 Aspect Ratio Grid acceptance; Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals iaooratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming io laboratory leas: 20 unfolded or overlapped grid squares <5% holes or opaque areas i F i B c M i >511 identificabon criteria observed Chrysotile 1 AMPHIBOLES Amphibole । P = Single Fiber Amosite 5 = Sundle (<3 'ibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Interseoiions) Anthophyllite Non-Asbestos ( Tremolite M= Matrix Non-Identified ) Actinolite NSD = No Struciuras Detected

CITY_21MC100_003103053

NYC-WTC_000183735