NYC-WTC_000200275

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (iitersi: 1880 Lab Group #: 7285 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0:04496 GRID BOX: Magnification: 20,000 GRID ID: ^12^ aV’ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/31/02

Analysis Performed By: MARK PEYSAKHOV

L22____ Structure No Structure lype >=05 p Lengtfi ID of Structure AmphibDie Nonssfc Nor 7 Ambig/ND EDS (Nonadb J No ■ Coord B M >=5(j Chrys <5u Elementsl

Struct = >0.5(1 >5:1 .Aspect Ratio Gric acceptance: V= Positive'diffraction pattern properties conforming to undissolved titer, overlapped orfolded Totals laboratory identification crireria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped eric squares <5% F B- C I M >6p 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsewed ■ - Chrysotile AMPHIBOLES I Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) A.nthophyliite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite ! NSD = No Structures Detected

CITY_21MC100_011274770

NYC-WTC_000200285