NYC-WTC_000223684

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7399 Filter Type / Filter Area: MCE 3S5 mir- Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4 13,02

Analysis Performed By: ___________________ Qlp ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure M or \ EDS iNonaac No F B C M >=05 p r~>=5^j Chrys Amphibole Ncnasb Ambig/ND I No Coord <5p I Eiementsi

S' 5 1/ 9 —If—

Struct = > 0,5n > 5:1 Aspect Ratio Gnd aaeptance: N = 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% I F i B 1 C 1 M ! >=M 'J = EDS spectrum conforming to laboratory holes or opaque areas -------------------------------------------------------------------- i---------- identification criteria observed Chrysotile ' i I AMPHIBOLES Amphibole : i ‘ ' F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster j>3 Intersections) Anthophyllite I Non-Asbestos | T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002919753

NYC-WTC_000223684