NYC-WTC_000204808

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m^C BOE Volume (liters): 1928 I Lab Group #: ■7491 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 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: 4/21/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor . EDS No jNonadb F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

•J J

[ Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: 'j = Positive diffraction pattern prooerties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% i F B i C 1 M >5u EDS spectrum conforming 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) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003061958

NYC-WTC_000204808