NYC-WTC_000210564

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Airtek Volume (lifers): 1320 Lab Group #: 6152 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 018 Area Examined: 0.06744 mm- GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/20/01

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS I No (Nonadb j F B C i M >=0^11 :>=5)J Chrys Amphibole Nonasb j Ambig/ND No Coord <5p Elements)

1

!

Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance:

y = Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5m v= EOS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite I M = Matrix Non-Identified NSC = No Structures Detected Actinolite J

C ITY_D E P_WO RB Y_C AN N ATA_SU B P_000021401

NYC-WTC_000210564