Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: EM & CA Volume (liters): 1300 Lab Group #: 6070 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 013 Area Examined: 0.06744 mm'

GRID BOX: ID: # Grid Openings: 6 __T Magnification: 20,000 Accelerating Voltage: 100 KeV Analysis Date: 12/9/01

Analysis Performed By: PP ROMAN PEYSAKHOV

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

I I I

I Struct = > O.5µ > 5:1 Aspect Ratio 4= Positive diffraction pattern properties conforming to Grid acceptance: <50% undissolved filter. overlapped or folded <10% particulate coverage >50% coverage ate Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M I 1- EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas

AMPHIBOLES Chrysotile Amphibole >5u

F = Single Fiber

I B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Amosite Crocidolite Anthophyliite Tremolite Ambiguous Non-Asbestos M = Matrix Actinolite Non-Identified I NSD = No Structures Detected

NYC-WTC 000098436