NYC-WTC_000225815

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1952 Lab Group #: 6208 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7- Grid Opening Size: 0.01124 '

Client Sample #: 7 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/27/01

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS No (Nonabb F B C M >=05 p >=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord ■ <5p Elements)

YOZ /ugg “VZZ

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: ^/= Positive diffraction pattern properties conforming to <50% uncissQlved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile : AMPHIBOLES ! Amphibole E = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected ,

CITY_2IMCl0 0_0 00622545 NYC-WTC_000225815