NYC-WTC_000229074

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (lit er si: 1800 Lab Group 7873 Filter Type / Filter Area: MCE 385

Lab Sample #: II Grid Opening Size: 0,01124 Client Sample #: 13 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 J—— GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date; 5/25/02

Analysts Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Sbucture N or v EOS ; No (Nonadb I F B C M ’=05 M >=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) .

ZSEEIE

Struct = > O.Sp > S: 1 Aspect Ratio Grid acceptance: Positive tUffractior pattern propertiBs conforming to <50% tindissqlvecl filter, overfapped or folded Totals laboratory identificabon criteria observed <10% pai^culate coverage >50% coverage ate least 20 unfolded or oveslapped grid squares <5% F B C M >5m 'l= EDSspee&um conforming to laboratory holes or opaque areas iderttirrcation criteria observed Chrysotile AMPHIBOLES Amphibole FI Single Fiber Amosite Ambiguous B = Bundle (<3 fibers <1 Uber diameter apart Crocidolite C = Cluster (>3 Intersections; Anthc^hyllite Non-Asbestos Tremolite MI Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002902148

NYC-WTC_000229074