NYC-WTC_000229200

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1856 Lab Group #: 7978 Filter Type / Filter Area: MCE 385 mm? Lab Sample #: 17 Grid Opening Size: 0.0II24 Client Sample #: 19 Area Examined: 0,04496 mm’ GRID BOX: Magpifleation: 20 < GRID ED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/5/02

Analysis Performed By*. ROMAN PEYSAKHOV

GO. Structure Structure Type Length ©ofStructure Nor ■( EDS No (Nonadb F B C M >=05 p >=5p Chrys Amphbole Nonasb Ambig/ND ’ No' Coord <5m EJwnertte)

35 Xz 4—

•___j__________________ Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance; ■J" Positive diffraction pattern properties confonrtng to <50% undtssoived fitter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 untofded or overlapped grid squares <5% F B C M >5m a/= EDS spectrum conforming to laboratory boles or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Ciuster (>3 intersections) Anbiophylllte Non-Asbestos Trernolite M = Matnx Actinolite Non-Identified NSO = No Stnrctures Detected

CITY_21MC1OO_OOO491689 NYC-WTC_000229200