NYC-WTC_000205129

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 001124 Client Sample #: 14 Area Examined: 0 04496 mm*

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N orN EDS No (Nonadb F B C M >=05 p :>=5p Chrys Amphibole Nonasb Ambig/ND No I Coord <51J Elements)

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I Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5p >51 Aspect Ratio <50% undissolved filter, overlapped or folded Totals Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification critena observec least 20 unfolded or overlapped grid squares <5% F B C M >5|j holes or opaque areas y/- EDS spectrum conforming to laboratory Chrysotile identification cnteria observed ' AMPHIBOLES ' Amphibole F = Single Fiber Amosite । 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C - Cluster (>3 Intersections) I Anthophyllite ; Non-Asbestos T remolite M = Matnx Non-Identified Actinolite NSD - No Structures Detected

CITY_21MC100_003058047

NYC-WTC_000205129