NYC-WTC_000217933

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #; 6684 Filter Type / Filter Area: MCE 3S5 mm- Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0-04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: ------ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/15'02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS iNonadb i No F B C M >=05 p >=5p Chrys Amphibole Nonaso Amoig/ND No Coord <5p Elements) ;

rf If

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance: ^= Positve diffraction pattern properties conforming to ‘50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed ‘:1Q% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F V= EDS spectrum conforming to laboratory boles or opaque areas identification criteria observed Chrysotile ■ AMPHIBOLES j Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite , Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified i Actinolite __ _ ______ .. I NSD = No Structures Detected

CITY_21MC100_002878084

NYC-WTC_000217933