TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Yame: NYC BOE Volume (liters): 1808 Lab Gi oiip #: 7001 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: 9/2 Mamiification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type 'Length j ID of St.'ucture N or 7 EDS No (Nonadb i F B C >=05 p ! >=5|j I Chrys Amphibole Nonasb Ambig/ND No <5m i Elements)

! x<r

-i

-4

Struct’' h ?u >5:1 Aspect Ratio Grid acceptance:

7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <13% particulate coverage >50% coverage ate laboratory "ihcnfication criteria observed least 20 unfoidea or overlapped grid squares <5% B I C 1 Y I >5u 01= EDS specii ,.01 conforming to laboratory tidies or .opaque areas dentrlcaiicn m.ieria obsereed Chi ', vorile -WIPIIIBOLISS Amphibole F = Single 'Dia Amosite Ambiduoiis j B = Bundle . liDers<1 fiber diameter apart Crocidolite C = Cluster > ; intersections) Anthophyllite Non-AsHestos T reinolite M = Matrix Non-ldeiait’ied Actinolite NSD = No iclructures Detected

CITY_21MC100_003102402

NYC-WTC_000183288