NYC-WTC_000202890

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 #: 8 Grid Opening Size: 0.01124 Client Sample #: 8 Area Examined: 0.24728 mm^

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

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Stnjcture N or 7 EDS No (Nonadb F B C M >=05 p :>=5m Chrys Amphibole Nonasb Ambig/ND No I Coord <5p Elements) 3/ -z p I

St

k V ly SjSZ ir 05 /A 7

Photo No. (from 1 in 5 asoestos containing samples) Grid acceptance: Struct = > 0.5|j > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals \= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M i >5tJ holes or opaque areas V = EDS spectrum conforming to laboratory Chrysotile identification criteria observed ■AMPHIBOLES 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 i Actinolite NSD = No Structures Detected .1____ L

CITY_21MC100_003069440

NYC-WTC_000202896