NYC-WTC_000202265

NYC 9/11 Public Portal Document

TEM Asbestos (air) Goimt Sheet Client Name: NYC BOL ii Volume lliters): 1920 Lab Group #: 6409: / Filter Type / Filter Area: MCE • 1385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 02 i : Area Examined: i 0.04496 i GRID COX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: l/23'/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or '/ EDS No iNonadt F B C M' , >=05 P“ ■ i>=5|j Ghrys Amphibole Nonasb Ambig/ND No i Coord '! <5u Elements)

Struct = > 0.5p. _> 5: f Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laboratory Identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B G M >5|J EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile / AMPHIBOLES J Amphibole F = Single Fiber Amosite ; B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous C = Cluster (>3 Intersections) I Anthophyllite i Non-Asbestos Tremolite ' ! M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003271258

NYC-WTC_000202265