TEM Asbestos air sample results, NYC SCA, Oct 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: m’C SCA Volume (liters): 1936 Lab Group #: 5801 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 14 - ■ Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4

Analysis Performed By; ROMAN PEYSAKHOV

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

2) / ZIS3^ G G Lf fX-g- /(

I__________

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

V= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B e M >5u identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003100046

NYC-WTC_000182629