NYC-WTC_000212835

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8025 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length lOofStructure N or V EDS No (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct > 0.5p > 5; I Aspect Ratio Grid acceptance: \= Positi/e diffraction pattern properties conforming Io <50% undissolved filter, overlapped or folded Totals laborator^r identification criteria observed <10% particutate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p v = EDS spectrum conforming to iatxoratory holes or opaque areas identificalion criteria obsen/ed Chiysotile AMPHIBOLES Amphibole F = Single Fiber ' Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) j Anthophyllite Non-Asbestos i Tremolite M = Matn.< Non-Identified Actinolite j NSD = No Structures Detected

CITY_21MC1OO_OO28524O7

NYC-WTC_000212835