NYC-WTC_000205003

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Cole Volume (liters): 450 Lab Group #: 7841 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124

Client sample #: 1 Area Examined: 0.1124 mm^

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 10 Analysis Date: 5/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or / EDS No (Nonadb F B C M >=0571 : '=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

43 z

fli Struct = > 0.5p >5:1 Aspect Ratio 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 overlapped grid squares <5% F B C >5u EDS spectrum conforming to laboratory holes or opaque areas identification cnterla 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 T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_010222090

NYC-WTC_000205004