NYC-WTC_000223649

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BCE Volume (liters): 1920 Lab (iroup #: 7299 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4 2/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure X or \ EOS AmBigiND I (Nonadb No F I B C M «05m >=5|j Ctirys Amphibole NonasB No (2oord <5m Elements)

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______ ________ I Struct =■ I’ O.op •' 5:1 A.spect Ratio Grid acceptance:

vi Positive diffraclion pattern crooelies cor forming to <50% undissolved filter, overlapped or folded Totals laboratory centificaiio' cntena ooseivea <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grd squares <5% ■' I F i B i C i M : ’5m •i - zOS spectrum conforming to aDoraiory holes or opaque areas identification criteria observed Chrysotile i amphiroi.es Amphibole i F - Single Fiber Amosite 3 - Supdle <3 fibers <1 fiber diameter apart Crocidolite Ambiguous I Z I Austei (>3 intersections) Anthophyllite Non-Asbestos ‘ Tremolite M - Matnx ' Non-Identified , Actinolite NhC = No Structures Detectea

CITY_21MC100_002919648

NYC-WTC_000223649