NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbesfos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 40 Grid Opening Size: 0.01124

Client Sample #: 40 Area Examined: 0.24728 mm^

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

Analysis Performed By: RONIAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Notn EDS (Nonadb No F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND ; No Coord <5|J Elements)

573 r 7 9 XI I 1^/

(/ 0 II 775^ y/ /? (Vy ^2 w72- II 1/ If

K

Photo No. (from 1 in 5 asbestos containing samples) 7 Gnd acceptance: Struct = > 0.5m > 5:1 Aspect Ratio Totals '1= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% r I F j B C M >5U holes or opaque areas 7= EDS spectrum conforming to laboratory Chrysotile ; identfication cntena observed .-AMPHIBOLES Amphibole j F = Single F’ber Amosite B = Bunale 1<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite 1________________ NSC = No Structures Detected

CITY_21MC100_003069473

NYC-WTC_000202929