NYC-WTC_000188918

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BO.E Volume (liters): 1936 Lab Group #: 5888 Filter Type / Filter Area: MCE 385 mm‘ Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX: -3-3 Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/14/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 9 EDS (Nonadb No F B C M >=5(J Chrys Amphibole Nonasb Ambig/ND No Coord Elements) <5u

•■3 --------- 3 4^^

' i Struct = > 0.5g -> 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 untoldec or overlapped grid squares <5% F B C M >5p N= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite ____ i_.. NSD = No Structures Detected

CITY_21MC100_003083169

NYC-WTC_000188918