NYC-WTC_000215027

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7109 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/17/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS (Nonadb No F B C M >-05 p >=5fj Chrys Amphibole Nonasb Ambig/ND No Coord Elements) <5p

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

v= EDS spectrum cor,forming to laboratory least 20 unfolded or overiapped grid squares <5% F B C I M >6p holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_000464309 NYC-WTC_000215034