NYC-WTC_000200199

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume tiitersb 1908 Lab Group #: 5919 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 25 Grid Opening Size: 0.01124 Client Sample #: 25 - Area Examined: 0.04496 mm^ GREP BOX: Magnification: 20,000 GRU) ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/1.8/01

Analysis Performed By: af) _ ROMAN PEYSAKHOV

GO. Struciurs Structure Type Length ID cf Structure Si or / EDS (Nonadb No F B C M >=05 pl < Chrys Amphibole Norasb Ambig/ND I No i Coord <5p Elements)

i/ M

Struct = > 0.5(I _> 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filler, overiapped ar folded Totals laboratory identification criteria observed <10% parficulate coverage >50% coverage ate

■/= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B C M >5u 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 M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003266788

NYC-WTC_000200199