NYC-WTC_000229274

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE VolBijaCtBtersV 1816 Lab Group #: 8085' Filter Type / Filter Area: MCE 385 Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined; 0.04496 GRID BOX: Magnifleation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Sfructure Structure Type Length tOofSiructure Nor V eos No Nonan* (Nonadb F 8 C M >==05 M >=5p Chrys AnntAole AireigW No Coord <5m Elements)

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance; Positlva diffraction pattern propertias conforming to <50% undaeoked Ntar, overtapped or folded Totals laboratory identillcatlon critena observed <10% partioulatB coveraoe >50% coverage ate least 20 unfolded or overlapped gild squares <5% F B C M >5u ’^= EDS Spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix AclinoHfe Non-Idcntificd NSO = No Structures Detected

CITY_2IMCl00_000491852 NYC-WTC_000229274