NYC-WTC_000223793

NYC 9/11 Public Portal Document

TEMAsbestos fairlCount Sheet Client Name: NYC BOE Volume (liters): 1920 f Lab Group #: 7599 Filter Type / Filter Area: MCE 385 mm- Lab Sample th 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/1/02 Analysis Performed By: ^/i

ROMAN PEYSAKHOV

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

i

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance, 7= Positive diffraction pattern properties conforming to <50% undissohred filter, overlapped or folded Totab laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or ovetlapped gnd squares <5% F i B C j M J >5v -/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile A.MPHtBOCES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-ldentified Actinolite NSD = No Structures Delected

CITY_21MC100_002919938

NYC-WTC_000223793