NYC-WTC_000218659

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6953 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 9 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: J Accelerating Voltage: 100 KeV #Grid OEening^ 4 Analysis Date: 3/6/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure structure Type Length ID of Structure Norv "EDS I (Nonadb 1 No F B C M >=05 p >=5(J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

ME I

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: <= Positive diffraction pattern properties conforming to "50% undissolved filter, overlapped or folded Totals .-L,_ _________________ laboratory ____ J identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p '/= 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_000466729 NYC-WTC_000218667