NYC-WTC_000218006

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6775 Filter Tvpe ' Filter Area: MCE 39? mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: EO-12 Area Examined: 0,04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/22.02

Analysis Performed By: a>£. MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS 'Nonadt No F B C M >=05 u Chrys Amphibole Nonasfc j Ambig.'NC , No Coord <5p Elements)

Struct = > 0.5|u > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory Idertificalion criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% fTb v= EDS spectrum conforming to laboratory holes or opaque areas Chrysotile LS_PLL; S ' i identification criteria observed

F - Single Fiber AMPHIBOLES Amosite Amphibole i—\— 8 = Bundle (<3 fibers <1 liber diameter apar. Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios Tremolite M = Matrix Actinolite Non-Identifled I N.3D - No Structures Delected

CITY_21MC1OO_OO2878223

NYC-WTC_000218006