NYC-WTC_000222788

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 6933 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By: f \/ ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v' EOS No (Nonadb ! F B C ’=5pi Chrys ftmpfiibole Nonasb AmbigtND No Coord Elements) <5m I pr£!Xz^ 5 2 2. I

Sliuci = > 0.5m > 5-1 -Aspect Ratio Grid acceptance:

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

EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% noIes or opaque areas F B c M >5u

identification criteria observed Chiysotile ■AMPHIBOLES .Amphibole F = Single Fiber Amosite 6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous

C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios Tremolite M = Matrix Non-ldenlified Actinolite NSD = No Structures Detected

CITY_21MC100_002918931

NYC-WTC_000222788