NYC-WTC_000223650

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYG BOE Volume (liters): 1928 Lah Croup #: 7299 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 GRIDID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/2/02

Analysts Performed By: MARK PEYSAKHOV

GO Structure I Structure Type Length ID of Structure N or N EDS (Nonaflb No I "f B C M >=05 M >=5p Ciirys rAmphiboie Nonasb AmbigiND Ml) Coord <5p Eterr,ents)

3

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Struct = > I).on > S I Aspect Ratio Grid acceptance v= Positive diffraction pattern properties cor forming to <50% undissoivea filter, overlapped or ‘olded Totals laboratcrv identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% : cfTb : c [ m >5m V = EOS spectrum conforming to acoratory holes or opaque areas identification criteria observed Chrysotile : A.MPHIBOLES Amphibole ( I F - Single Fioer 5 = Eunole A3 fioers --I fiber diameier apart C - Cluster i>3 intersections; Amosite Crocidolite Anthophyllite Ambmuous i '■

Yon-Asbestos ; I i Tremolite M : Matrix Non-Identified J Actinolite NSD = .No Structures Cetected

CITY_21MC100_002919649

NYC-WTC_000223650