NYC-WTC_000211127

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7997 Filter Type / Filter Area: MCE 385 mm’ Lab Sample#: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/8/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Ty De Length 10 of Structure Nor\ EDS No (Nonadt) F B C “m >=05|j :>=5p Chrys Amphibole Nonasb I Ambig/ND Elements) No Coord <5p

Struct = > 0.5p > 5; I Aspect Ratio Grid acceptance; 'i= Positive diffraction pattern properties conforming to <50% undissdved filter, overlapped or folded Totals laboratory identification criteria obsened <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5m •7= EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole r = 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 Actinolite NSD = No Structures Detected

CITY_2 IMCl Cl 0_0 0 0 4 614 2 6 NYC-WTC_000211127