NYC-WTC_000191196

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group It: 7738 Filter Type / Filter Area: MCE 385 Lab Sample #: 8 Grid Opening Size: 0.01124 •Client Sample #: 8 Area Examined: 0.04496 nim^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or n EDS (Nonadb No F B C M >=0571 :>=5p Ch^s Amphibole Nonasb • Ambig/ND No Coord <5p Elements)

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissobed filter, overiapped or folded Totab laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5p .. EDS spectrum conforming to Iaborato7 holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES /Kmphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003090385

NYC-WTC_000191196