NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3610 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 42 Grid Opening Size: 0.01124

Client Sample #: 42 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 M Cfirys Amphibole Nonasb Ambig/ND I No I Coord <5p Elements)

f// lZS^ //

jZ. // II xBl- - fl 1/ 'I ± 4- n 11

31 s•2 fl fl II A II A X I I

I ! EZO '' Photo No, (from 1 in 5 asbestos containing samoies) Grid acceptance: Struct = > 0.5li ? 5:1 Aspect Ratio <50% undissolved filter, overtaoped or folded Totals V = Positive diffraction pattern propenies confonning to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% f F i B C I M >op holes or opaque areas v = EDS spectrum conforming to laboratory Chrysotile “3“ ioentification criteria observed AMPHIBOLES Amphibole r = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster !>3 Intersections) I Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identifieii Actinolite NSO = No Structures Detected

CITY_21MC100_003069475

NYC-WTC_000202931