NYC-WTC_000225901

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1944 ' Lab Group #: 6242 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 20 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 mm^

GRIP BOX: Magnification: 20,000 GRIPED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/2/02

Analysis Performed By: ■ ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M >=05 p ->=5p Chrys ■ Amphibole Nonasb Ambig/ND No Coord <5p Elements)

7 EL ZTEz: if ff ff

70#

Struct = > O.Sp >5:1 Aspect Ratio Grid acceptance: y'= 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 unfolded or overtapped grid squares <5% F B C M >5u '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

C:iTY_2 IMCl 0 0_0 0 0 6 2 2 6 71 NYC-WTC_000225901