NYC-WTC_000201930

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet NYCBOE Volume (liters): 1S40 Lab Group #: 6734 Filter Type / Filter Area: MCE ’ 385 mnV Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 nirrr GRID BOX: Magnlllcation: 20,000 GRIDED; Accelerating Voltage: TOO KeV # Grid Openings: 4 Analysis Date: 2/19/02

Analysis Performed By; ‘ MARK PEYSAKHOV

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

' I Struct = > 0.5p > 5:1 Aspect Ratio rrr Grid acceptance;

■ . 4= Fositive diffraction pattarn properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50%'coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M =■5^ ' 9= EDS spectrum conforming to laboratory ho;e3 or opaque areas identification criteria observed Chrysotile 'amphiboles Amphibole F = Single Fioer Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3.Intersections) 1 Anthophyllite Nou-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003269675

NYC-WTC_000201930