TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voliiine (liters): 1816 Lab Group #: 7001 Filter Type / Filter Area: MCE 385 Lab Sample tf: 4 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure I Structure Type Length ID of Structure N or X EDS (Nonadb No F B i C M >=05 u >=5)j Chrys Amphibole ' Nonasb Ambig/ND Elements) <5u ------------ —I

Z/

/X

Struct " II Fp > 5:1 Aspect Ratio Grid acceptance

y'= Positive cliftraction pattern properties conforming to <50% urdissolved filter, overlapped or folded Totals <i0"o paniculate coverage >50% coverage ate laboratory I'lei'tificalion criteria obsen/ed least 2C .in'oioec oi overlapped grid squares <5% F ! B i C I M . >5p 'y = EDS 3i>’Tii'n rotitorming to laboratory ho'es yr opaque aisas identifcaiiui ^nitiia ouserved Chivsotile AMPHII3OI.I4 Amphibole F = Single - uc Amosite 8 = Buiiale ■ i i'bets <1 '"iber diameter apan Crocidolite Ambiciious C = Clusiei . 3 iniersectionsi Anthophyllite Non-.Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSD = No I'lroctiires Detected

CITY_21MC100_003102403

NYC-WTC_000183289