NYC-WTC_000227358

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 7124 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length 10 of Stnjcture N or v' EDS (Nonadb No F B C M >=05 M >=5h Chrys Amphibole Nonasb Ambiq/ND /~) Coord cSp Elements)

I _JL_ 7^

Struct = > 0 5u >5:1 Aspect Ratio Gnd acceptance:

'J = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identfication critena observed <10% particulate coverage >50% coverage ate

\ = EDS spectrum conforming to laboratory least 20 unfolded or overlapped gnd squares <5% F B i C I M i >5m holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Iniersecbons) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified j J Actinolite I . NSC = No Structures Detected

CITY_21MC100_002898697

NYC-WTC_000227358