NYC-WTC_000202472

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1920 Lab Group #: 9089 Filter Type / Filter Area: MCE 385 Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mm’ B GRID BOX: /& Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: £ ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Structure N or M EDS : (Nonadb j No i Coord Mo F c M >=05 u <5u >=5p Chrys Amphibole Nonasb i Ambig/WD Elements) i —i(— u If <3-8 C(

Photo No. (Tfom 1 in 5 asbestos containing samples) TA Grid acceptance: struct = > 0.5p > 5:1 Aspect Ratio Totals ■V= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B G M >5u holes or opaque areas EDS spectrum conforming to laboratory Chrysotile identification criteria observed ! AMFfflBOLES~n Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite ' Non-Asbestos Tremolite ' M = Matrix N on-Identified 1 Actinolite NSD = No Structures Detected

CITY_21MC100_003272834

NYC-WTC_000202472