NYC-WTC_000199426

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet I Client Name: N4’C BOE Volume (liters): I 944 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mill" Lab Sample #: 12 Grid Opening Size: 0.01 124

Client Sample #: 12 Arc^Examined; 0,04496 mnf GRID BOX: Magnification: 20,000 GIOD ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

'.GO. Structure Structure Type Length ID of Structure N or '• EDS -f- (Nonadb No F B j C M >=05 p Chrys Amphibole Nonasb Ambig/ND Elements) I <5p

;zzn 4 (V S J-T

__________ Struct = > 0 5(1 > 5:1 Aspect Ratio Grid acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or foldec Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% Fl B C M i. >5u 9= EDS spectrum conforming to laboratory holes or opaque areas ------ Identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle (<3 fibers <1 fiber diameter apar, Crocidolite Ambiguous C. = Cluster (>3 Intersections; Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified । Actinolite NSD = No Structures Detected

CITY_21MC100_0 03033930

NYC-WTC_000199426