NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 33 Grid Opening Size: 0.01124 Client Sample #: 33 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 N or v* EDS No (Nonadb F B C M >=05 p : ■=5p Chrys Amphibole Nonasb Ambig/ND : No i Coord <5p Elements) <tr/ II

1: 3 7CW If

If

4^

/X zX

jg- /z

Photo No. (from 1 in 5 asbestos containing samples) Gnd acceptance: Struct = > 0.5p > 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% i v'= EDS spectrum conforming to laboratory holes or opaque areas Chrysotile V B I C j M i >5tJ identification criteria observed i ! AMPHIBOLES j Amphibole I t 1 1 F = Single Fiber Amosite 1 S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersecricns) Anthophyllite i Non-Asbestos M = Matnx Tremolite Actinolite 1 Non-Identified | NSD = No Structures Detected

CITY_21MC100_003069466

NYC-WTC_000202922