NYC-WTC_000212373

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 7281 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined; 0.04496 mm^ GRIP BOX: Magnification; 20 000 GRIP ID: Accelerating Voltage: 100 KeV rf Grid Openings: 4 Analysis Pate: 3/31/02

Analysis Performed By: ————«==a

MARK PEYSAKHOV

GO. Structure Structure Type Length IO of Structure Nor 7 EDS No (Nonadb F B C M >=05 u :>=5m Chrys Amphibole IMonasb AmbigyND No Coord <5u Elements)

------- C.-

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Struct -= > 0 5p >5:1 Aspect Ratio Grid aaeptance: V - Positive diffraction pattern pmiierties conforming to <50% undissolved fllter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u V = EDS spectrum conforming '.0 aboratory holes or opaque areas Identification cntena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber d ameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite IV = Matrix Non-ldentified Actinolite NSO = No Structures Detected

CITY_21MC100_002866277

NYC-WTC_000212373