NYC-WTC_000201227

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: • NYC BOE Volume (liters'): 1800 Lab Group #: 7291 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sam [lie #: GRID BOX: GRID ID: jtz # Grid Openings: 4 w,. VG Area Examined: Magnification; Accelerating Voltage: Analysis Date: 0.04496 mm"

20,000 100 KeV 4/1/02

Analysis Pertormed By; /Vf ROMAN PEYSAKHOV

GO. Structure j Structure Type Length ID of Structure N or 7 EDS (Ncnadb No. : F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <-T ) / I

______ //_______ ■ T'

/W

Struct = > 0-5,1 >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern propg-ries conformirg.to <5C% undissolved filter, overlapped or folded Totals laboratqp/ identification criteria obse.’vec <10% particulate coverage >50% coverage ate least 20 unfolded or overlappeo grid squares <5% F B C M >5u 7= EDS spectrum conforming tc laboratory holes or opaque areas identification, criteria observec Chrysotile AMPHIBOLES j Amphibole F = Singie Fiber Amosite B = Bundle <3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite K = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_0112T5499

NYC-WTC_000201238