TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 6933 Filter Tvpe / Filter Area: MCE 385 mm-

Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 12 Area Examined: 0.04496 mm’

GRID BOX: Magnillcation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Qpeniiios: 4 AjudysisDate: 3/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 'V EDS (Nonadb No F B C M >=5tJ Chrys Amphibole i Nonasb Ambig/ND No Coord Elements) <5p

-'^31 773^ z<Y

^6

Struct = > I) 5u ■•5:1 Aspect Ratio Grid acceptance: undissolveo iiiter, overlapped or folded Totals v'= Positive diffraction pattern properties conforming to <10“'o oarticuiate coverage >50% couerarje ate laboratory aentification criteria observed least 20 unfolded cr overiappeci grid squares <5 F B ! C ' M i >5m = EDS spectrum conforming to laDoraiopr bcies or opacue areas ---- i-------------- i------ ------- Identification criteria observed Cliivsotile AMPHIBOLES .■Xinpliibole F = Single Fiber Amosite Crocidolite Ambiuiiou.s B = Bundle (<3 fibers <1 fiber diameter aoart C = Cluster (>3 Intersections) Anthophyllite Yon-Asbestos Tremolite M = Matrix Actinolite \on-ldentified NSD = No Structures Detected

CITY_21MC100_003102282

NYC-WTC_000183222