NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 27 Grid Opening Size: 0.01124 Client Sample #: 27 Area Examined: 0.24728 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure NorM EDS j No (Nonadb | F B C M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord .<5m Elements) / (( 7 XI /( /( // // 1/

i Xr /f K zESZ 0 // K? /I / Il If M TTZIZ It t/z. !

i.r Pz. 1/ If

ft jO If h Hi If

J__ i ............ i _ Mi J i ' Photo No. (from I m b asbestos containing samples) Grid acceptance: Struct = > 0.5|j > 5:1 Aspect Ratio <50% undissolved filter, overlapoed or folded Totals Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate iabrcratory identification criteria observed least 20 unfolded or overlapped grid squares <5% p v = EDS spectrum conforming to laooratory holes or opaque areas L _____ P B ! C i Chrysotile i I Identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite S = Bundle {<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous J C = '3:usier(>3 Iniersectionsi Anthopnyliite ! Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = Mo Structures Detected

CITY_21MC100_003069338

NYC-WTC_000202873