NYC-WTC_000228540

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNajne: WC BOE yolumejQitersl: 1800 Lab Group #: Filter Type / Filter .Area: MCE 355 mm- Lab Sample Grid Opening Size: 0.01124

Client Sample #: 07 ■Area E.xamined: 0.0449b mm' i

GRIP BOX: Magnification: 20,000 GRIP IP: ■Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/15 02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure T ype Length ID of Structure M or v No ,'Nonaob F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND Coord <5p Eiements) : ----- - -- i 77^

t

I

1

■1

J

Struct = > 0.5g .>5:1 Aspect Ratio Grid acceptance: ^= Positive ciffraction pattern properties conforming to <50% undissolved Alter, overiapped or folded Totals laboratory tdentificalion criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M i >5u V = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile --- i----- j AMPHIBOLES Amphibole F = Single Fioer Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC100_002900935

NYC-WTC_000228540