NYC-WTC_000203470

NYC 9/11 Public Portal Document

.-.4- TEM AsbestBs (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: ? Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

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

V n

Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5m > 51 Aspect Ratio Totals >/= Positive diffraction pattern progenies conforming to <10% particulate coverage >50% coverage ate laboratory identification cntena oosenred least 20 unfolded or ovedapped grid squares <5% F B C M I >5p holes or opaque areas V= EDS spectrum conforming io laboratory Chrysotile Identification cntena observed AMPHIBOLES I Amphibole F = 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 NSD = No Structures Detecteo Actinolite .1, -L

CITY_21MC100_003058140

NYC-WTC_000203470