NYC-WTC_000217915

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 6671 Filter Type / Filter Area: MCE 3S5 mm- Lab Sample #: 6 Grid Opening Size: 0 01124

Client Sample #: 06 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2,14/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID o! structure N or V EDS No 7——Tc:—i fNonadb F B C M >=05 p Chrys Amphibole NonasB AmbigiNu 1 . , No Coord <5m r Elements,' J

2’

Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: ■7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate feast 20 unfolded or overlapped grid squares <6% f I F i B ) C i M '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile | AMPHIBOLES ; Amphibole I F = Single Fioer Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite ' Non-Asbestos Tremolite ' M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002878059

NYC-WTC_000217915