NYC-WTC_000228338

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1840 Lab Grogp #: 6398 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #; 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.04496 nm- GRID BOX: Magnification: 20,000 GRIDTP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. : Structure Structure Type Length ID of Structure N or EDS No >=05 u (Nonadb F B C M >=5|j Chrys Amphibole Nonasb AmbigMD No .Coord <5m Elements)

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Struct = >0.5g > 5:1 Aspect Ratto Grid acceptance:

i2!*-s2a laboratory idenWcation criteria observed sssripscKZ. least 20 unfolded or overlapped grid squares <5% Totals F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification 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-Aisbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002900001

NYC-WTC_000228338