NYC-WTC_000204780

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7425 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV LGridOnejiinos: 4 Analysis Date: 4/15/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Structure N or \ EDS No >=05 pi (Norabb F B C M >=5pi Chrys Amphibole Nonasb AmbigiND

a No Coord TfZ IT <5U Elements’)

3EE

Struct = > 0.5u > 5:l Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria ot'served <10% particulate coverage >50% coverage ate

= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% T holes or opaque areas p p B I C M I >5p icentification critera observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster i>3 Intersections) Anthophyllite Non-Asbestos , Tremolite W = Matrix Actinolite Non-Identified hSD = No Structures Detected J

CITY_21MC1OO_OO3O61897

NYC-WTC_000204780