NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.24728 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS 1 No >=05 p Amphibole Nonasb Ambig/ND (Nonadb J F B C M Chrys No Coord <5u Elements)

ST

70^

kt /-■_ F~

3- tc-3 cr r- lY z/

I I I ■' Photo No. (from 11n 5 asbestos containing samples) Grid acceptance: Slruc; = > O.Sp > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals v= Positive diffraction pattern properties ccnforrrang to <10% particulate coverage >50% coverage ate laboratory identification critena observed least 20 unfolded or overlapped grid squares <5% " F I B C M j >5m noIes or opaque areas \ = EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified \ J Actinolite NSD = No Structures Detected

CITY_21MC100_003069326

NYC-WTC_000202861