NYC-WTC_000193392

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count S Client Name: NYC BOE 1816 Lab Group #: 8213 Filter Type MCE 385 mm- Lab Sample #: 18 Grid I J.01124

Client Sample #: 21 Ari ).O4496

GRID BOX: 20,000 GRID ID: Accelei; 100 KeV # Grid Openings: 4 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length EDS No (Nonadb F B C M >=05 p =5p Chrys Amphii mbig/ND No Coord <5p Elennente)

Struct = >0.5p > 5:1 Aspect Ratio Grid acceptance: ■i- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded ils labctatory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M >5u EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed AMPHIBOLES F = Single Fiber Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Anthophyllite I C = Cluster (>3 Intersections) No; Tremolite M = Matrix Noi; Actinolite NSC) = No Structures Detected

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NYC-WTC_000193392