TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume /liters): 1816 Lab Group 6610 Filter Tvpe /' Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm- GRID BOX: Maoniiication: 20,000 GRIPED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No >=05 p :>=5(j (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

I 1 T I Struct = > 0.5(1 -> 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulale coverage >50% coverage ate least 20 uniolded or overlapped grid souares <5% I F 1 B I C : M p5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria ooserved Chn'sotile ( AMPHIBOLES Amphibole i = Single riber - Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous j I I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix Non-Identified i NSD = No Structures Detected Actinolite .J. . CITY_21MC100_003103076

NYC-WTC_000183739