NYC-WTC_000224785

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7272 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm^ GRID BOX: GRID IP: m., Ma2nification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 3/30/02

Analysis Performed By: ROMAN PEYSAKHOV

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

—U__ <

Struct = > O.5u >5:1 Aspect Ratio Grid acceptance:

4= Positive diffraction pattern properties conforming to <50% undissoh/ed filter, overlapped or folded Totals laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ! >5u EDS spectrum conforming to laboratory holes or opaque areas identificaiion 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 NSD = No Structures Detected

CITY_21MC100_002894614

NYC-WTC_000224785