NYC-WTC_000203513

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 9204 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 .Analysis Date: 12/23/200

Analysis Performed By: roman'peysakhov

GO Structure Structure Type Length ID of Structure Nor '/ EDS (Nonadb No F B C M >=05 P : -5p Chrys Amphibole Nonasb Ambig/NO No Coord <5p Elements)

7^ z' 75 IL ((

1 i I I i 1—1—, Hhoto No (from 1 m b ascestos containing samples) Gnd acceptance Strict = > 0 >51 Aspect Ratio <50% undissolved filter, overlapped or folded Totals <= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate iaooratory identification catena observed least 20 unfolded or overlapped grid squares >5u I <5% holes or opaque areas F B C yj= EDS spectrum conforming to laooratory Chrysotile loentification cntena obsen/ed ! AMPHIBOLES | - .Amphibole - = Single Fiber Amosite 3 = Bundle (<3 fibers <1 liber diameter apan Crocidolite ■Ambiguous Anthophyllite C = Cluster (>3 Intersections) Tremolite Non-.Asbestos M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_0 03058359

NYC-WTC_000203513