NYC-WTC_000201869

NYC 9/11 Public Portal Document

TEMAsbestosIairl Count Sheet Client Name: NYC BOE Volume I'liters): 1840 Lab Group #: 6555 Filter Tvpe / Filter Area; MCE . 385 mnV Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.1)4496 mn]2. GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/4/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure ’ Structure Type Length "iDofStructure N or N EDS No (Nonadb F B C >=05 pi >=5m Chrys Amphibole Nonasb Ambig/ND No , Coord <5u Elemerits)

Struct = > 0.5 pi > 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratery identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F, B C M >5p vG EDS spectrum conforming to laboratory holes or opaque'areas identification criteria observed ' Chrysotile i amphiboleY" Amphibole F = Single Fiber I Amosite B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos Tremolite M = Matrix Non-Identi fieri Actinolite NSD = No Structures Detected

CITY_21MC100_003269346

NYC-WTC_000201869