NYC-WTC_000202596

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9213 Filter Tvpc / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 9 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKHOV

i GO. Structure S'ruciure Type Length ID of structure or / EDS No >=05 p ) -5p (Monadb F B C M Chrys Amphibole Nonasb Amblg/ND I No I Coord <5(J Elements)

a I J- I

Fnoio Mo, (from 1 in o asbestos ccntaining samples) Grid acceptance: Struct = > O.Su > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folced Totals 'J- Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfoided or overlappec grid squares >5g <5% holes or opaque areas F B C M v= EDS spectrum conforming to laboratory laentiflcatlon criteria obsenred Chrysotile AMPHIBOLES i Amphibole F = Single "iber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C - Cluster (>3 Intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified MSC = Mo Structures Detected

! CITY_21MC100_011276926

NYC-WTC_000202596