TEM Asbestos analysis results, NYC BOE samples, Jan 2002

NYC 9/11 Public Portal Document

TEM Asbestos (AIICROX AC ) Count Sheet Client Name: N^'C BOE Volume (ML): 20 Lab Group #. 04 SI Surlace Area Sampled 100 Lab Sample #: 10 Client Sample #. 9(i-l) 10 Magnification: 20,000

GRID BOX. Accelerating Voltage: 100 KeV GRID ID: # Grid Openings: 5 Analysis Date: 1/28/02

Analysis Perlormed By: MARK PEYSAKHOV

GO Structure Structure Type Lergth ID of Structure EDS (Nonadb No F B C M Chrys Amphibole Nonasb Ambig/ND Elements) - -f

3^ I j" j

St! uct = > 5 Op >31 Aspect Ratio Gnd acceptance >/= Positive diffraction pattern properties conforming to <50% undissoivsd filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded cr overlapped grid squares <5% F B C M >5p ^1= EDS spectrum conforming to laboratory holes or opaque areas Identification critena observed Clii ysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003088156

NYC-WTC_000189775