NYC-WTC_000204342

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7385 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 17 Grid Opening Size: 0.01124 Area Examined: 0.04496 mm- Client Sample #: 20 Magnification: 20,000 GRID BOX: GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/11/02

Analysis Performed Bv: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 u >=5|j Chrys Amphibole Nonasb Ambig/NO Elements) /\ Zi No Coord <51J

ff a

Struct = > 0.5(j >5:1 Aspect Ratio Gnd acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded TotaLs <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5m y'= EDS spectrum conforming to laboratory holes or opaque areas 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 Tremolite M = Matrix Non-Identified Actinolite NSC = No Structures Detected

CITY_21MC1OO_OO3O6O149 NYC-\/VTC_000204342