NYC-WTC_000212528

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N YC BOE Volume (liters): 1920 1 ab Group #: 7632 Filter Type / Filter Area: MCE 385 mm- l ab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

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

Analysis Performed By: ________ J/__________ tp ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v cDS (Nonadb No F B C M >=05^1 :>=5p Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5m

J (I Z5C

Struct = > O.Sp > 5:1 Aspect Ratio Grid acceptance: /= Positive ciffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals aboratory identification critens observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B T c M [ >5u EDS spectrum conforming to laboratory holes or opaque areas dentificalion critena observed Chrysotile AMPHIBOLES Amphibole - = Single Fiber Amosite 3 = Buriole (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous 1 = Cluster (>3 Intersections! Anthophyllite Non-Asbestos Tremolite y = Matrix Non-Identitied Actinolite USD = No Structures Detected

CITY_21MC100_0 02866951

NYC-WTC_000212528