NYC-WTC_000203510

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9204 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 8 Area Examined: 0 04496 mm-

GRID BOX: Magnificati^ 20,000 GRIPID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/23/200

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or y EOS No (Nonadb F B C M >=05 (J >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

2)7 ,7 t/ 1 t(

i I i

Hhoto No (from 1 in b asbestos containing samples) Gnd acceptance. Struct = > 0 5p >51 Aspect Ratio <50% undissolved filter, overiaoped or folded Totals v= Positive diffraction partem properties conforming to <10% particulate coverage >50% coverage ate laboratory identificabon cntena observed least 20 unfolded or overlappea gnd squares >5u <5% holes or opaque areas F B C M v'= 5DS spectrum conforming to laboratory Identification cntena observed Chrysotile j amphiboles" Amphibole = Single Fiber \ Amosite i 3 = Bundle (<31'lbers <1 fiber diameter apart I Crocidolite ■Ambiguous C = Cluster (>3 intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified NSD = No Structures Cetecieo

CITY_21MC100_003058353

NYC-WTC_000203510