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): 3600 Lab Group #: 9041 Filter Type 1 Filter Area: MCE 385 mm2 Lab Sample #: 19 Grid Opening Size: 0.01124 Client Sample #: 22 Area Examined: 0.24728 mm2

GRID BOX: fj7 5 Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/30/02

Analysis Performed By: p- ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or j EDS (Nonadb' F B C M > 05 i >=5p Chrys Amphibole Nonasb Ambig/ND No Coord No u Elements

Z G, 7 iiii , __ i ~~

z/ t 33 L1

Z )3 l!✓ s-g ,3Z t IIii _L/ __ __ __ __ __ __

C- 1 ! (çV4 1/ 7 Photo o. {from in 5 asbeStos con rmna samq es 'r ___

gnu awaNtaw. ___ ___ ___ ___ ___ ___

Struct = > 0.5(u > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals v= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laooratory identification criteria observed least 20 unfolded or ovenapped grid squares <5% F B C i M i >5µ holes or opaque areas d= EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole F = Single Fiber I Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ( I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

NYC-WTC 000131518