NYC-WTC_000200979

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volumejlitersi: 1920 Lab Group #: 7790 Filter Type / Filter Area: /MCE 385 mm’ Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample S: 14 , Area Examined: 0.04496 mm3

GRID BOX: Magnifleation: 20,000 GRID ID: Accelerating Voltage: 100 KeV #(2ridY)neniiig^ 4 Anah’sisDate; 5/18/02 ,

Analysis Perlormed By: Z) // /< ROMAN PEYSAKHOV

GO: Structure Structure iype Length ID of Structure N or V EDS (Nonacb No Coord No’ F B c M >=05 p <50 Chrys Amphibole Norasb Ambig/ND Elements)

ife zZ

7

Struct = > 0.5g ■> 5:1 Aspect Ratio Grid acceptance: ■ 7= Pos'rave diffraction pattern properties conforming to <5C% urdisscived filter, overlapped or folded Totals laboratory identifioation. criteria observed - <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u 9= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole r “ Single Fiber Amosite B = Bundle ;<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) , Anthophyllite Non-Asbestos Tremolite M = Matrix’ . Non-Identified Actinolite NSD = No Structures Detected _

CITY_21MC100_011275323

NYC-WTC_000200992