NYC-WTC_000202474

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 9089 Filter Type / Filter Area: MCE 385 nim* Lab Sample 13 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: 0.04496 mm*

GRID BOX: Maenification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

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

if fl Cl

'ff^ -

Photo No (trom 1 in 5 asbestos containing samples) Grid acceptance: Struct = > C.5j > 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 ovedapped grid squares <5% F B C M >5u holes or opaque areas yj- EDS spectrum conforming to laboratory Chry'sotile 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 i Tremolite M = Matrix Non-Identified Actinolite J NSD = No Structures Detected

CITY_21MC100_003272837

NYC-WTC_000202474