NYC-WTC_000207128

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count SL et Client Name: NYC BOE 1944 Lab Group #: 7851 Filter Type / :!er Area: MCE' 385 mm^ Lab Sample #: 10 Grid G ning Size: 0.01124 Client Sample #: 10 Are:, xainined: 0.04496 mm^

GRID BOX: Ri : liiicnlioii: 20,000 GRID ID: Acceleni. .: Voltutie: 100 KeV # Grid Openings: 4 A' •'si.s L.rte: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

. GO. Structure Structure Type Length ID juciure NorN EOS -' Mo ■ >=05 p Amphibc. (Nonadb F. B C M >=5)j Chrys Non=■. . Ambig/NO No Coord <5p Elements)

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Struct = > 0.5g > 5; I Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to undissoNed filter, 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 , >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart ' Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO3O14666

NYC-WTC_000207128