TEM asbestos air count sheet, lab group 7602, sample 13

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filter si: 1800 Lab Group 7602 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #; 15 Area Examined: 0.04496 mm^ GRID BOX : / Magnification: 20 000 GRIDED; < Accelerating Voltage: 100 Ke V # Grid Openings; 4 Analysis Date: 5/1/02

Analysis Performed By; —7^ ROMAN PEYSAKHOV

GO. Structure Structure Type Length 10 of Structure N or '1 EDS i No {NcnadS I F B C >=05p I :>=5p Chrys Amphibole Nona^ AfflbigMD ___ No Coord <5p Elements) j

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-t- s 1

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Struct = > 0-5^ > 5:1 Aspect Ratio Grid acceptance: ^1= Positive diffraction pattern properties oonfcmilrtg to <50% undfssolvea Slier, overlapped or folded Totals iaboratoiy identification criteria obsenred <10% particulate coverage ^50% coverage ate least 20 unfolded or overlapped grid squares <5% |’ F B C M , >5l, EDS speclAim conforming Io laDoratory holes or opaque areas identilicafion criteria observed Chrysotile AMPHIBOLES Amphibole s F = Sir.gle Fiber Amosite Ambiguous ! B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M - Matrix Actinolite Non-ldenttfied NSD = No Structures CelecJed

CITY_21MC100_002901574

NYC-WTC_000228725