NYC-WTC_000217627

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (I 1824 Lab Group #: 8213 Filter Type / Filter . MCE 385 mm" Lab Sample #: 6 Grid Opening 0.01124 Client Sample #: 09 Area Exan । 0.04496 GRID BOX: Magni H c 20,000 GRID ID: Accelerating Vi 100 KeV # Grid Openin2s: 4 Analysi.s 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Struct'I-' V EDS No >=05 p ;>=5p Amphibole r. (Nonadb F B C M Chrys Ambig/ND No i Coord <5p Elements)

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded .ills laboratory 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 Chryso:. AMPHIBOLES Amphib F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambigih C = Cluster {>3 intersections) Anthophyllite Non-Asbesi Tremolite M = Matrix Actinolite Non-Identifu NSD = No Structures Detected

CITY_21MC100_002877467

NYC-WTC_000217627