NYC-WTC_000200846

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYG BOE Volume (liters): 1840 - Lab Group #: 7697 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496' mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/11/02

Analysis Performed By: MAiRK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS No (Nonadb F B C M >=05 u >=5m Ctirys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

■ I

I Struct = > 0.5)1 > 5: i Aspect Ratio Grid acceptance: /= °ositive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laborator/ 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 tc laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameier apart Crocidolite Ambiguous ‘ C = Cluster {>3 Intersections) i Anthophyllite Non-Asbesto.s Tremolite M = Matrix Non-Tdentified Actinolite NSD = No Structures Detected

NYC-WTC_000200850