NYC-WTC_000196923

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Yame: NYC BOE Volume (liters): 1824 Lab Group #: 6885 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124 C lient Sample #: 09 Area Examined: 0,04496 mm- GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure N or EDS

Nio Coord No F B C M I Chrys Amphibole Nonasb Ambig/ND jNonadb Elements) <5p ----------------------------------- ■

/—I—I-

1------ F

--4 --4 — -L

Struct = > 0.5h > 5: i Aspect Ratio Grid acceptance:

y= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed

= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas Tf -----------------------1— identification criteria observed Chrysotile 1--- ]---- --------- AMPHIBOLES Amphibole F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Noti-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003044202

NYC-WTC_000196923