NYC-WTC_000201440

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 7406 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm‘

GRIP BOX: GRID ID: # Grid Openings: 4 ife Maonitlcation: . 20,000 Accelerating Voltage: TOO KeV Analysis Date: 4/15/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 4 EDS No >=05 |j i (Nonadb F B C M Chrys Amphibote Nonasb Ambig/ND No Coord <5m Eiements)

' If 7

Struct = >0.5p..> 5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to <50% undissolvsd filter, overlapped or folded Totals aboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p '/-EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile \ AMPHIBOLES j Amphibole F = Single Fiber I Amosite I B = Bundle (<3 fibers <1 fiber diameter aoart Crocidolite I Ambiguous C = Cluster (>3 Intersections) ' i Anthophyllite Non-Asbestos i 7 remolite M = Matrix Non-Identified i Actinolite NSD = No Structures D.etected

NYC-WTC_000201452