NYC-WTC_000223670

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1936 Lab Group #: 7363 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: too KeV # Grid Openings: 4 Analysis Date: 4/9.'O2

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length J ID of Stnjcture Nor \ i FDS No '=05 u Amphibole Nonasb ; Amoig,<ND ! No'^^du F B C M >=5p i Ch.rys i Elements) No Coord <5u

J

Struct = > 0.5|U > 5:1 Aspect Ratio Grid acceptance: v = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% i F j B : C . M y = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrvsotile , I

F = Single Fiber AMPHIBOLES Amosite rH Amphibole I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous j C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ! Tremolite M = Matnx Actinolite \on-IdentitTed : NSD = No Structures Detected

CITY_21MC100_002919719

NYC-WTC_000223670