NYC-WTC_000223789

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYG BOE Volume (liters): 1928 Lab Group #: 7590 Filter Type / Filter Area; MCE 385 Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^ GRID BOX: Magnifkati^ 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/30/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID Of Structure N or EOS No (Nonadb F B C >*05 M >=5|j Chrys AmpMbote Nonasb Ambig/NO • Elements) No Coord <5y

■—fc— ,■—e— ,

Struct = > 0.5u > 5:1 Aspect Ratio Grid aoceptanoe: 'Z* Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals latxOTtory identHication entena observed <10% particulate coverage >50% coverage ale least 20 unfolded or ovsrlappad grid squares <5% F B C M >5m 'h EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES ’ Amphibole F = Single Fiber Amosite 3 * Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO * No Structures Detected

CITY_21MC100_002919930

NYC-WTC_000223789