NYC-WTC_000203480

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size: 001124 Client Sample #: Area Examined: 0 04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: # Grid Openings: 4 ^31 Accelerating Voltage: AnalysisDate: 100 KeV 11/11/02

Analysis Performed By: /QP ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or V EDS No (Nonadb F 8 C M >=05 p Chrys Amphibole Nonasb Ambig/ND No 1 Coord <5p Elements)

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23

Photo Mo {from 1 in 5 asbestos containing samp es) Gnd acceptance Struct - > 0 5(J .> 5 1 Aspect Ratio undissolved filter, overlapped or folded Totals v'= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laooratory identification cntena observed least 20 unfolded or overlapped gnd squares <5% F B C M I >5p holes or opaque areas V= EDS spectrum conforming to laboratory Chrysotile identification cntena observed , AMPHIBOLES ' Amphibole F = Single Fiber Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ) Ambiguous C = Cluster (>3 Intersections) ; Anthophyllite Non-Asbestos M = Matnx Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003058150

NYC-WTC_000203480