NYC-WTC_000201776

NYC 9/11 Public Portal Document

TEMAsbestosYairiCount Sheet Client Name: NYC BOE Volume niters): 1840 Lab Group #: 7021 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: TOO KeV # Grid Openings: 4 Analysis Date: 3/10/02

Analysis Performed By: MARK PEYSAKHOV

, . GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=06 M >=5tJ Chrys Amphibole Nonasb Ambig/ND : No Coord ttements) <5|J

a

Struct = > O.Sfi > 5:1 Aspect Ratio Grid acceptance: T= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped orfolded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B G M >5p T= EDS spectrum conforming to laboratory holes or opaque areas identfication criteria observed Chrysotile AMPHIBOLES 1 Amphibole F = SingleFiber Amosite 6 = Bundle (<3 libers <1 fiber diameter apar. Crocidolite Ambiguous C = Cluster (>3 Intersections) 1 Anthophyllite Non-Asbestos ' Tremolite i I m = Matrix 1 Non-Identified Actinolite NSO = Mo Structures Detected : :

CITY_21MC100_003269084

NYC-WTC_000201776