NYC-WTC_000229072

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1800 Lab Group #: 7873 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0 04496 mtn^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date; 5/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length IO of Sfojcture N or d EDS (Nonadb No F B C M >=05 M >=5p Chrys Amphiboe NonasS Ambig/ND 1 JM No Coord 'Sm Elements)

Struct = > O.5p >5:1 Aspect Ratio Grid acceptance: ; ■/= Positive diffraction pattern properties confonniig to <50% undissa*/ed filter, overlapped or folded Totals taboratory idenitfcatlon criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M I ’5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Ftoer Amosite 6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite An^iguous C = Cluster (’3 Intersectionsi Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = Ifio Structures Detected

CITY_21MC100_002902144

NYC-WTC_000229072