NYC-WTC_000227686

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count S i

Client Name: NYC BOE J liters): 1920 Lab Group #: 7346 Filter Tvit . Area: MCE 385 Lab Sample #: 15 Grit! -t Size: 0.01124 Client Sample #: 18 Al - uiiined: 0.04496 mm-

GRID BOX: ■ cation: 20,000 GRID ID: Accel c. • . iiltage: 100 KeV # Grid Openings: 4 Date: 4/6/02

Analysis Performed By: MARX PEYSAKHOV

GO, Structure Structure Type Length Nor V EDS (Nonadb No F R n ..>=05 p >=5p- •Chrys - Ampi ■asb Ambig/ND. No Coord Elements)’ <5p

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Struct = > 0.5pi > 5: i Aspect Ratio Grid acceptance: ■/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B c M >5p

identification criteria observed , AMPHIBOLES F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthopfiyiiite N Tremolite M = Matrix N( Actinolite NSD = No Structures Detected

CITY_21MC100_002899184

NYC-WTC_000227686