NYC-WTC_000229392

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #; 8278 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 13 Grid Opening Size; 0.01124 Client Sample 15 Area Examined: 0.04496 GRID BOX; Magnification: 20 000 GRID ID: J Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/25/02

Analysis Performed By: MARK PEYSAKHOV

GO, Sbucture Structure Type Length ID of Structure N or V EDS No AmpTiibote (Nonadb F 8 C M >=05 M >=5p Ctirys Nonasb AmbigW No Coord <5p Elements)

J —<c—

Struct = > 0.5m ■ I Aspect Ratio Grid acceptance: Positive diffraclion pattern properties r»rrf^^^ undissot^ fitter, ova^p^ or folded Totals latioraloiy idantifiotion criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped giM squares <5% F B C M >5- ^1= EOS spectrum conforming to laboratory holes or opaque areas identlftcation criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 Ubers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3inlersectiorfst AnBiophyWte Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSO = No Structures Detected

CITY_2IMCl00_000492092 NYC-WTC_000229392