NYC-WTC_000210465

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: EM & CA Volume (liters): 1300 Lab Group #: 6070 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 022 Area Examined: 0.06744 rnm-

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/9/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. I Structure Structure Type Length ID of Structure N or 7 EDS i (Monadb i No F B C M >=05 p ;>=5iJ Chrys Amphibole Nonasb Amoig/ND No Coord Elements) j

'Si -1

/A 7 0/.“

J 4 . i T .I I -) .I

Struct = >0.5)1 > 5;1 Aspect Ratio Grid acceptance:

■'/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

'1- EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B c M >5p holes or opaque areas identification critena observed 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 M = Matrix Actinolite Non-Identified NSD = No Structures Detected

C ITY_D E P_WO RB Y_C AN N ATA_SU B P_000021291

NYC-WTC_000210465