NYC-WTC_000223663

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NN'C BOE Volume (liters): 1920 Lab Group #: 7358 Filter Type / Filter Area: MCE 3S5 mm- Lab Sample#: 5 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4 8 02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure \ or \ ; EDS ——v' ' \ 0 n aQ No F B C >=5p Chrys Amphibcle Nonasb i AfT,btg;ND ; No Coord <5p I I i

Z- g,

-O'

Struct = > 0.5)j > 5.1 Aspect Ratio Grid acceptance: N = Positive diffraction pattern properties conforming to <50% undissolved filter, overfapped or folaed Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% ' F : B C M EDS spectrum conforming to laPoratory holes or opaque areas - lOentification criteria oDserved Chrysotile • AMPHIBOLES Amphibole F = Single Fiber Amosite £ = Sunole (<3 fibers <1 fiber diameter aca* Crocidolite Ambiguous C = Cluster !>3 Intersections) Anthophyllite ; Non-.Asbestos Tremolite M = ‘vlairix Non-Identified Actinolite NSC = No Structures Cetected

CITY_21MC100_002919707

NYC-WTC_000223663