NYC-WTC_000228785

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7656 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/6/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length IDofStructijre N or v EDS I (Nooadb ! No F B C M >=C5m >=5tJ Chrys Amphibete Nonasb AmOg/NC No Coord <5p Elements)

ZZZ5ZZ

Struct = >0.5p >5;t Aspect Ratio Grid acceptance: Positive diffraction patient properties conforming to <50% undisaoived fitter, wertapped or fofoed Totals laboratory idenfification criteria observed <10% particulaie coverage s50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C i M >5y v'= EDS spectrum confomwig to laboratory holes or opaque areas identification criteria observed Chrysotile ■AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophytiite Non-Asbestos Trernolite M = Matrix Actinolite Non-Identitled NSO = No Struclures Detected

CITY_21MC100_002901687

NYC-WTC_000228785