NYC-WTC_000201227

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: - 7291 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01) 24

Client Sample #: 09 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 A iiiUysisDate: 4/1/02 Analysis Performed By: /\J

ROMAN PEYSAKHOV

GO. Structurg Structure Type Length ID of Structure N or 4 EDS (Nonadb No F B C M i >=05 p >=5p Chrys Amphiboe Nonasb TYmbig/ND No Goord Elements) I <5p I

zxi Apz

t ■

Struct = > 0,5 J >5:1 .Aspect Ratio Grid acceptance; 9= Positive diffraction pattern properties conformi.ng to <5C% urdissclved filter, overlapped or folded Totals laboratory identification criteria observed <1 C% pertlculats coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B I G M >5p 9= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Cluysotile AMPHIBOLES I Amphibole F = Single Fiber Amosite | B = Bundle 73 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_011275496

NYC-WTC_000201235