TEM air sample results, 125 Liberty St, Oct 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3610 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 42 Grid Opening Size: 0.01124 Client Sample #: 42 Area Examined: 0.24728 mm2 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID ofSrructure N or EDS (Nonadb No F B C M >=05 i >=5p ChryS Amphibole Nonasb AmbiyND No Coord ~~ Elements) 7v N ___ __ ________

I 2-. ((

2 2 rr rr 8i r

if ' ___ ______ _________ ______

iiZZ /i f f Z r

•t 2

2z r

A Photoo. m I in 5 asbestos con mma samoies vffu awnpuu1ua. Struct = > 0.5p >5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals 1= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C Mi >5p holes or opaque areas v= EDS spectrum conforming to laboratory Chrysotile identification criteria observed i AMPHIBOLES Amphibole. F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) ! Anthophyllite j Non-Asbestos Tremoiite M= Matrix Non-Identified Actinolite NSD = No Structures Detected

NYC-WTC 000131708