NYC-WTC_000201738

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voinme (liters): 184Q Lab Group #: 7060 Filter Type / Filter Area: MCE 385 mm" Lab Sample tt-: 3 ' Grid Opening Size: 0.01124 Client Sample #■. 03 Area Examined: 0.04496 mm^ GRID BOX: GRID ID: ML Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 3/13/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure NorV EDS No . (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb , Ambig/ND No Coord <5u Elements) / Mei, ¥ ¥

■i

Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: V= Pcsitive diffraction pattern properties conforming to '550% 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 G M >5|j i EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES f Amphibole F = Single Fiber ; • Amosite 1 B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections^ 2 Anthophyllite ^Tremolite J i Non-Asbestos M = Matrix Non-Identified Actinolite । NSD = No Structures Detected: J .

CITY_21MC100_005389989

NYC-WTC_000201738