Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I ITEM Asbestos (air) Count Sheet Client Name: J Lab Group #: Airtek 6115 Volume (liters) Filter Type / Filter Area: Grid Opening Size: 1300 MCE 385 mm= 0.01124 Lab Sample #: 6

1 Client Sample #: GRID BOX: 06 G6 / Area Examined: Magnification: 20,000 0.06744 mm=

Z E 49 I GRID ID: # Grid Openings: 6 Accelerating Voltage: 100 KeV Analysis Date: 12/15/01

I Analysis Performed By: MARK PEYSAKHOV

I No GO. Coord Structure NO Structure Type F B C M >=05 1> <5u Length >=5p Chrys ID of Structure Amphibole Nonasb Nor V Ambig/ND EDS (Nonadb Elements)

i

b -CA

I I I 1

P1 I Struct => 0.5µ .> 5:1 Aspect Ratio 4= Positive diffraction pattern properties conforming to Grid acceptance: <50% undissolved filter, overlapped or folded <10% particulate coverage >50% coverage ate Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C MI >5u I 4= EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas

AMPHIBOLES Chrysotile Amphibole F: Single Fiber I Amosite Ambiguous 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite n

C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos Tremollte M = Matrix Actinolite Non-Identified NSD = No Structures Detected

NYC-WTC 000098459