Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: .ATC Volume (liters): 1300 Lab Grout) #: 5954 Filter Type' Filter Area: NICE 355 mm= I Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.06744 mm=

I GRID BOX: GRID ID: # Grid Openings: 6 Magnification: Accelerating Voltage: Analysis Date: 20.000 100 key 11 23/01

Analysis Performed By: ( .1 ROMAN PEYSAKHOV

GC. Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C M >=05 N >=5p Chrys Amphibole Nonaso Ambig/ND No Coord <gN Elements)

1/

1 I 1 1 1 1 1 Struct = - 0.5 u > 5: i Aspect Ratio v= Positive diffraction pattern properties conforming to Gnd acceptance: <50% undissolved filter, overlapped or folded Totals laboratory dentification criteria observed <10% oamcuiate coverage >50% coverage ate

1 d= EDS spectrum conforming to !aooratory

dentification cntena ooservea least 20 unfolded or overlapped gad squares <5% holes or opaque areas Cluysotile F B C M 5u

AMPHIBOLES Amphibole

1 F = Singie Fiber B = Bundle ~<; fibers <^ `iberdiametersoart C = Cluster t>3 !ntersectionsi Amosrte Crocidolite Anthoohyllite .Ainbti, uous Non-Asbestos 'remolite N1=Mamx

1 NSD = No otructures Geteceo Actinoiite Non-Identified

NYC-WTC 000104450