TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: WC BOE Volume (liters): 1936 Lab Group #: 6208 Filter Type / Filter Area: MCE 385 Lab Sample #: J Grid Opening Size: 0,01124

Client Sample #: J Area Examined: 0,04496 mm-

GRID BOX: Ma2nification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/27/01

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure T ype Length iD of Structure N or / EDS I No INonadb F B C M I >=05 p Chrys Amphibole Nonasb j Ambig/ND Elements) Nc Coord i <5iJ ----------

S’ (/ fl

Struct = > 0 5u > 5:l Aspect Ratio Grid acceptance:

\ = Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals iabcraiory identification criteria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% / C IDS spectrum conforming to laboratory holes or opaque areas idertificalion criteria observed Chrysotile

F = Single Fiber B = Bundle i<2 fibers <1 fiber diameter apart AMPHIBOLES Amosite Crocidolite Amphibole Ambiguous ~r C - Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified j Actinolite NSC = No Structures Cetected

CITY_21MC100_003105130

NYC-WTC_000184444