NYC-WTC_000217821

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE V'olume (titers): 19S4 Lab Group #: 6573 FiJlcrLT\j2e2 FUter A22ea2 MCE 355 mm- I Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 7 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure T ype Length ID of Structure N or v j EDS No F B C M >=05 p >=5p Chrys Amphibole \ Nonasc I Amoig/ND j I No Coord I I “ I Elements) ........... -i--------------- 1-------- —-1—----- ---— i T I I

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance; ^/= Positive diffraction pattern properties conforming to TotaLs laboratory identification criteria observed I M Uh Ai AM aU»AAA1A»^ <10% particuiate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F I B K ; M '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ------------------- u C = Cluster (>3 Intersections) Anthophyllite i Non-Asbestos j T remolite M = Matrix Actinolite i Non-Identified ! NSD = No Structures Detected

CITY_2IMCl00_000465769 NYC-WTC_000217821