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 filters): 1824 Lab Group #: 6735 Filter Tvpe / Filter Area: MCE 3S5 mm- Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: ■Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/19/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or C EDS No >=05 p (Nonadb F B C M >=5p Chrys Amphibole Nonasb Ambig/ND 1, No Coord <5p Elements)

-V II

1 1 Struct = > O.Sp > 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Tot^ iaooratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M >5ij EDS spectrum conforming to laboratory holes or opaque areas ! F identification criteria observed Chry'sotile j ' AiVlPHi BOLES Amphibole : ■ = Single Fiber Amosite S = Bundle (<3 fibers <t fiber diameter apart Crocidolite Ambiguous I Anthophyllite Non-Asbesros j C = Cluster (>3 intersections’ Tremolite ! i M = .Matrix ! Non-Identified i Actinolite NSD = No Structures Detected 1 .. !

CITY_21MC100_003103319

NYC-WTC_000183823