NYC-WTC_000202585

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientJVani^ NYC BOE Volume (liters): 1805 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Si^e: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm^ GRID BOX: GRID ID: # Grid Openings: 4 A Magnification: Accelerating Voltage: Analysis Date: 20,000 100 KeV 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS T" No (Nonadb F B C >=05 p ><r5)J Chrys Amphibole Nonasb Ambig/ND i No I Coord <5u Elements)

Ji J (I if

'' Photo No. {from 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0.5p .> 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals '/= Positive diffraction pattern properties conforming to <10% particijiate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overiapped grid squares <5% F B I C M >5|j holes or opaque areas \= EDS spectrum conforming to laboratory Chrysotile I identification criteria obserzed AMPHIBOLES I Amphibole F = Single Fiber Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite : Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i M = Matrix T remolite Actinolite Nou-Identified i NSD = No Structures Detected J

I'"”" CITY_21MC100_003273686

NYC-WTC_000202585