TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 5844 Filter Type / Filter Area: MCE 385 mni- Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm- GRID BOX: 5 / Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/7/01

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or 8 EDS i (Nonadb No F B C M •=05p >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5|J Elements) j

AW 3^ K (I —U__ 9(r

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance;

'J- Positive diffraction pattern properties conforming to <50% undissQlved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed

EDS soectrum conforming to laboratory least 2C unfolded or overlapped grid squares <5% [ F B I C M j holes or opaque areas L identification cnteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 intersections) Anthophyllite i Non-Asbestos i T remolite I__________________ L 1 M = Matrix NSD = No Structures Detected Actinolite I Non-Identified i E CITY_21MC100_003106193

NYC-WTC_000185193