NYC-WTC_000228819

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume lliters): 1808 Lab Group #: 7672 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 rrtm-

GRID BOX: signification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/8/02

Analysis Performed By; f^l ROMAN PEYSAKHOV

GO. Structure Structure T/pe Length 10 of Structure Nor v EOS ^Nonadb No F S C M >=06 p >=5p Chrys Amphibote Nonasb ArrbjgJND No Coord <5|J Elements;

/iS ■ 44

Struct = > 0.5p > 5:1 Aspect Ratto Grid acceptance: 9= Positive diffraction pattern properties conforming to <50% undisaofved filter, overapped or folded Totals <10% particulate coverage >50% coverage ate laboratorv identification criteria observed least 20 unfolded or overlapped grid squares <5% Pp C M I >5u B EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile , amphiboles Amphibole i F = Single Fiber Amosite Crocidolite Ambiguous i B = Bundle I <3 fibers <1 liber diameter apart C = Cluster {>3 intersections) M = Matrix Anthophyllite T remolite Actinolite Non-Asbestos Non-ldentified j r.. NSD = No Structures Oelacted

CITY_21MC100_002901738

NYC-WTC_000228819