TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): I 88 Lab Group #: 6933 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 GncCOpeningSi^ 0.01124

Client Sample #: 07 Area Examined: 0.42712 mm-

GRID BOX: Maunit'ication: 20,000 GRIDID: A£celerating_yoltage2 100 KeV # Grid Openings: 38 AnalvsisDate: 3/5/02

Analysis Performed By: t \/ ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor v EDS (Nonadb No F 8 C M >=05 u ! >=5p j Chrys A m 0 h ibo eV Nonasb Ambig/ND No Coord Elements)

Struct = > 0,511 > 5 I Aspect Ratio Grid acceptance.

0 = Positive diffraction pattern properties conforming to <50% undissolved ‘liter overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 urloidec ar overlapped grid squares <5% F 1 B I C ) M 1 >5u ’v= EDS spectrum conforrriing to iaboratciy noiescr opaque areas identification criteria rqoserven Cliivsotile WIPIIIDOLES Amphibole F = Single Finer Amosite Ambiuuoiis B = Bundle (<3 fibers <1 fiber diameter apad Crocidolite C = Cluster !>3 Intersections! Antbophyllito Son-Asbestos Tremolite M = Matrix Soil-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003102277

NYC-WTC_000183219