NYC-WTC_000188449

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Name; NYC BOE Volume (liters); 1832 Lab Group #; 7872 Filter Type / Filter Area; MCE 385 mm- Lab Sample#; 1 Grid Opening Size; 0.01124 ClkntSampk #: 04 Area Examined; 0.04496 mm^ GRID BOX: Magnification; 20,000 QBffiJD: Accelerating Voltage; 100 KeV Analysis Date; 5/25/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID Structure Norv EDS No Amphibole (Nonadb F B C M >=05 M >=5p Chrys Nonasb Ambig/NO No Coord <5m Elements)

gE IJ

Struct ■ > O.Sg > 5:1 Aspect Ratio Gridaoceptance; PosiUve diffraction pattern properties confontMtg to <50* undlssolwd filter, overiappad Of folded Totals laboratory idantilication criteria observed <10* padieulatB cowwage >50* coverage ate toast 20 unfolded or Qvertapped grid squares <5% F B C M >5p V= EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Singtonber Amosite 8 = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identificd NSD = No Structures Detected

CITY_21MC100_003080557

NYC-WTC_000188449