NYC-WTC_000199417

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1928 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm^

GlUD BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02 Analysis Performed Bv: /l''^

ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of structure Nor ic'/ ] [Nonadb No F B C M >=05 p i Chrys Amphibole Nonasb Ambig/ND No Coord Elements) [ <5p I

7 A'' 1

! I ■

S ' r“

' i I

Struct = > 0.5,u > 5.1 Aspect Ratio Grid acceptance

7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laooratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolaeo or overlapped grid squares <5% [' F I B ' C M 1 >5u EDS spectrum conforming to laboratory holes or opaque areas ------- 1---------- idenlification criteria obsen/ed Chrysotile AMPHIBOLES Amphibole F - Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite j Ambiguous F------ !------ 1 C - Cluster (>3 Intersections! Anthophyllite Non-Asbestos K = Matrix NSD = No Structures Detected Tremolite Actinolite Non-Identified I__ H-r CITY_21MC100_003033891

NYC-WTC_000199417