NYC-WTC_000202574

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters); 1920 Lab Group #: 9210 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #; 13 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or x/ EDS (Nonadb No F B C M >=05 (J : ■=5p Chrys Amphibole Nonasb Ambig/ND Coord Elements) No <51J

I ------ - ±2. e--Y 7

Photo No. itrom 1 in i? asDestos containing samples) ~ Gnd acceptance: Struct > 0.5|j > ^.1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals '/= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage als laboratory identification critena observed least 20 unfolded or overlapped grid squares >5p <5% holes or opaque areas F B M '/= EDS spectrum conforming to laboratory identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <' fiber diameter apart Crocidolite Ambiguous j Anthophyllite C = Cluster i>3 Intersections) I Tremolite 'Non-Asbestos M = Matrix ( Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl0O03273 633

NYC-WTC_000202574