NYC-WTC_000228787

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group#: 7656 Filter Type / Filter Area: MCE 385 mm‘ Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #; 10 Area Examined: 0.04496

GRIP BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 5/6/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Struchjre Type Length ID of Structure N or v EDS INoradb No F B C M >=05 p :>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

i

struct = > 0.5(1 > 5; I Aspect Ratio Grid acceptance; 1/= Positive diffraction pattern properties contorming io <50% undissoived filter, overlapped or fokted Totals laboratory ioentilication criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or oveitapped grid squares <5% F B C M >5u '/= EDS spectrum conforming to laboratory holes or opaque areas identification critena observed Chrysotile AMPHIBOLES Amphibole F = Single fiber Amosite Crocidolite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart C s Cluster {>3 (rtteiseciions) Anthophyllite Non-Asbestos Tremolite M = Mairin Actinolite Non-ldentified i I USD = No Structures Detected

CITY_21MC1OO_OO29O1689

NYC-WTC_000228787