NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3800 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.24728 mm^

GRID BOX: /^73 Magnification: 20,000 GRID ID: '3? F Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: jQ

ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C M >=05 p >=5iJ cr.ys Amphibole NonasP Ambig/ND No Coord <5u Elements)

37 s //

£ / r 4 9 V 1L /■y

7^

/4 V2-

-1' c-£ // 7F ILZW '2'Z^

I j I '■ Photo ho. (from 1 in 5 asbestos containing samples) Grid acceptance: Slruc; = > 0 5|j > 5:1 Aspect Ratio Totals <50% unOissolved filter, overlapped or folded -ositive diffraction pattern properties conforming to <10% particulate coizerage >50% coverage ate laooraiory loentification criteria observed least 20 unfolded or overiapoed gnd squares <5% f C I Nl >5p holes or opaque areas 'J= EDS spectrum conforming to :acoratory Chrvsotile | dentification catena observed ' I AMPHIBOLES Amphibole j r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I ! I C = Cluster >3 Intersections) Anthophyllite Non-Asbestos I I Tremolite M = Matrix Non-Identified NSD = No Structures Detected Actinolite J

CITY_21MC100_003069321

NYC-WTC_000202856