NYC-WTC_000207920

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9205 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID IB: Accelerating Voltage: 100 KeV 4 Grid Openings: 4 Analysis Date: 12/23/200

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure n or 4 EDS j No (Nonadb F B C M >=05 pi >=5fJ Chrys Amphibole Nonasb Ambig/ND / ZlA ' Coord <5pi Elemenis)

071/" If

i I i Hholo No cFom 1 in 3 asoesios containing samples) Grid acceptance: Struct - > 0.5p > 5;1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory iaentificaiion cnteria observed least 20 unfolded or overlapped grid squares F B C M >5P I <5% holes or opaque areas V- EDS soec’jum conforming to laboratory identification criteria observed Chrysotile j .AMPHIBOLES , Amphibole ? = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) I Anthophyllite Tremolite Non-Asbestos M = Matrx Actinolite Non-Identified NSO = Mo Structures Detected

CITY_21MC100_003017185

NYC-WTC_000207920