NYC-WTC_000230524

NYC 9/11 Public Portal Document

TEM AsbestDs (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab^^TouD/^ 9133 Filter Type / Filter .Area: MCE 385 mm- Lab Sample #: 15 Grid OBening Si^ 0.01124 Client Sample #: 15 Area Examined: 0,04496 mm’ GRID BOX: Magniflcation: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/2 8; 02

-Analysis Performed By: ROMAN PEYS.AKHOV

GO. Structure Structure Type Length IDcfStructure Nor v fcCS i (NonadP i No F 3 C M >=05 M : ■=5p Chrys Amphibole NonasF Airbg/ND P , / _Coord <5 UI Elements) i

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I i -—1

II. i 1 T 1 I

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' Photc Mo, (trorn 1 in 5 asbestos containing samplBS; Grid acceptance: Struct = > 0.5u .> .51 .Aspect Ratio Totals <50% undissolved filter, overiappsd or foided \ = Positive diffraction pattern propenies conforming to <10% oarticjiafe coverage >50% .coverage ate laboratory identification criteria observed least 20 unfolded or ovedapped grid squares <5% f B i C : M '. >5u '1 = EDS soectrum conforniinc to laboratory noIes or opaque areas L I I Chrysotile I identification criteria observed AMPHIBOLES i Amphibole I F - Single Fioer Amosite 1 AmbigiiotiS ) 3 = Bundle (<3 fibers <1 fiber diamater apart Crocidolite C = Cluster (>3 ntersections) Anthophyllite j No-i-Asbestos j Tremolite M - Matrix Actinolite I Von-Ideiititied i MSD = Mo Structures Detected

CONFIDENTIAL, CITY_21MC100_011771467 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230524