TEM Asbestos air sample results, NYC BOE, June 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 802:. Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/9/02

Analysis Performed By: MARK PEYSAKHOV

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

z

Struct = > 0.5p >5:1 Aspect B.atio Grid acceptance; '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >S)J EDS spectrum conlomiing to laboratory holes or opaque areas identification criteria observed Chrysotile Famphiboles Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apar: Crocidolite Ambiguous C = Cluster (>3 Intersections') 1 Anthophyllite Non-Asbestos Tremolite M = Matrix ■ Non-Identified Actinolite NSC = No Structures Detected

CITY_21MC100_003094264

NYC-WTC_000193166