TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 6208 Filter Type / Filter Area: MCE 385 mm? Lab Sample #: 13 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 29,000 GRID ID: /r-‘A Accelerating Voltage: 100 KeV j # Grid Openings: Analysis Date: 12/27/01

Analysis Performed By: ■_ —

ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor v EDS (Nonadb No c M >=05 p >=5p Chrys Amphibole Norasb No Coord UI <5p Ambig/ND Elements)

cs 7y z zZ I_____

i! 1

Struct = > 0,5p > 5 I Aspect Ratio Grid acceptance; /= Positive diffraction pattern properties conforming to <50% undissolveo filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% ( F I B i C M >5p 9= EDS spectrum conformtng to laboratory holes or opaque areas identification cnteria observed Chrysotile AMPHIBOLES Amphibole r - Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart ) Crocidolite i Ambiguous 3 = Cluster (>3 Intersections) i Anthophyllite ! Non-Asbestos Tremolite । M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003105140

NYC-WTC_000184454