NYC-WTC_000202573

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 13 Area Examined: 0.04496 rnim

GRID BOX: Magnifieation: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKIIOV

GO. Structure Siructure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=05 p Chrys Amphibole Nonasb Ambig/NC No Coord Elsmertts) <5p /

<7 a- 3? ,7

I ' s.... I I I Photo No. (tram 1 in b asbestos containing samples)' Grid acceptance; Struct - > Q.Sp > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals 1/= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 2C unfolded or overlapped grid squares >5(J <5% holes or opaque areas F B C i M V= EDS spectrum conforming to laboratory Identification criteria observed Chrysotile i AMPHIBOLES I Amphibole F = Single Fiber i Amosite 3 = Bundle <3 fibers <1 fiber diameter apart I Crocidolite Ambiguous ' Anthophyllite C = Cluster (>3 Intersections) Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMC10 0_0 0 3 2 73 6 31

NYC-WTC_000202573