NYC-WTC_000208338

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volurie (liters): 1896 Lab Group #: 8759 Filter Type / Fi ter Area: MCE 385 mm- Lab Sample #: 18 Grid Opening Size: 0.01124

Client Sample #: 18 Area E xamined: 0.04496 mm-

GRID BOX: Mag lification: 20,000 GRID ID: #'Grid Openings: 4 s Acceleratinji; Voltage: Analysis Date: 100 KeV 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure I Structure Type Length ID of St ucture Norv EDS - (Nonadb No ! F B C M >=05 p >=33 Chrys Amphibole Nonasb Ambig/ND .No Coord Elements) i <5p I

a J !

Struct = > 0.5u _> 5:1 Aspect Ratio Grid acceptance;

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 0= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F.= Single Fiber Amosite B = Bundle (<3 fibers <1 f ber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbisios Tremolite M = Matrix Non-lden ified Actinolite NSD = No Structures Detected

CITY_21MC100_003021665

NYC-WTC_000208338