TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 6933 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0.04496 mtn-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type ; Length ID of Structure N or' s' EDS

No Coord No F ' c srf Chrys Amphibole I Nonasb Ambig/'ND (Nonadb Elements)

CE I ff

Struct = • I).OU o: I Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or cverlaopea grid souares <5% F I B 1 C i M v= EDS spectrum conforming to laboratory ncles or opaque .areas laentification criteria onsenreo ChiA sortie -WIPHIBOLES .-Xmphibole E < Single Finer Amosite B = Bundle i<3 fibers <1 fiber diameter apad Crocidclite AmbiL;uous C = Cluster i>3 Intersections! Anthoptiyllite Son-Asbestos Tremolite M = Matrix Actinolite Non-kleiitit'ied bSD = No Structures Detected

CITY_21MC100_003102279

NYC-WTC_000183220