NYC-WTC_000223687

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^'C BOE Volume (liters): 1928 Lab Group #: 7399 Filter Type / Filter Area: MCE 385 mn- Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4,13 02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor \ EDS ■ No r-NcradS F , B C M >=05 p >=5|j Chrys i Amphibole Nonasb | Ambig/ND No Coord <5p E'errerts)

a iZ- 2 lL

Struct = > 0.5g > 5:1 Aspect Ratio Gnd acceptance: N = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% f ! F i B i C ; M . ~ v= EDS spectrum conforming to laboratory holes or opaque areas loeniification critena observed Clirysotile i amphiboles Amphibole ; F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 intersections) Anthophyllite Non-Asbestos : Tremolite M = Matrix Non-Ideiitificd ’ Actinolite NSD = No Structures Detected

CITY_21MC100_002919757

NYC-WTC_000223687