NYC-WTC_000222881

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1856 Lab Group #: 7001 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 04 Area Examined: 0.04496 mm^ GRID BOX: 9/21 Maonification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norx EDS No >=05 p ; =5|J Amphibole 1 Nona^ (Nonadb F B C M Ctirys Ambig/ND No Coi'id <5p Elements) f fl ti ~li A

Struct = >ll.5|.i >5:1 Aspect Ratio Grid acceptance: Positive diifraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale 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 Chrvsotile AMPHIBOLES Amphibole F = Single ribei Amosite B = Bundle t<3 fibers <1 fiber diameter apart Crocidolite Ambmuous C = Cluster i>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-ldeiitified N3D = No Structures Detected

CITY_21MC100_002919032

NYC-WTC_000222881